Protective structure for heat-generating components and liquid treatment apparatus

Abstract

To provide a protective structure capable of being suitably used in liquid treatment apparatus that is immersed in a liquid, and capable of waterproofing and dissipating heat from heat-generating components such as light-emitting elements without having the heat-dissipating member come into contact with the liquid.SOLUTION: A heat-dissipating member with a heat-generating component installed at one end is housed in the first sealing member, and the first sealing member is inserted into the connecting member. At the other end of the connecting member, the first sealing member is inserted into the second sealing member and a part of both are fixed in a watertight manner. Furthermore, the second sealing member is fixed to the connection member in a watertight manner.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a protective structure for heat generating parts such as light emitting elements, and is particularly suitable for use in waterproofing light emitting elements in liquid treatment devices used by immersing them in liquid. [Background technology]

[0002] Ultraviolet light is known to have a sterilizing effect, and is used in liquid treatment devices that irradiate ultraviolet light onto liquids used in the manufacture of food, etc., wastewater, etc., to sterilize them. Some liquid treatment devices are used by immersing them in liquid, and in such devices, electrical components such as light-emitting elements are provided with waterproof protection.

[0003] Since electrical components may generate heat, heat dissipation must also be considered. In particular, in a liquid treatment device using a light-emitting element, when the power supplied to the light-emitting element is increased to increase the treatment capacity, the amount of heat generated by the light-emitting element also increases, so that the heat dissipation of the light-emitting element must be promoted in order to operate the liquid treatment device smoothly.

[0004] In the case of a liquid treatment device that is used by immersing it in liquid, the heat dissipation of the heat-generating parts is promoted to some extent because the parts are cooled by the liquid present in the vicinity, but the heat dissipation effect is limited due to the provision of waterproof protection. For example, in the waterproof structure described in Patent Document 1, the periphery of the light-emitting element is sealed with resin, which becomes a resistance to heat conduction.

[0005] Furthermore, in the case of a waterproof structure in which an air layer exists around the light emitting element as described in Patent Document 2, the air layer functions as a heat insulating layer, so that the heat dissipation effect by the liquid cannot be expected.

[0006] When there is an air layer around the light-emitting element, heat dissipation from the light-emitting element can be promoted by using a cooling fan as described in Patent Document 3, but this raises issues such as the device becoming larger and more complicated.

[0007] In an effort to solve the above problems, the applicant came up with the invention described in Patent Document 4, which is based on the idea of ​​bringing a heat dissipation member into contact with a liquid to promote cooling.

[0008] On the other hand, it is not desirable to bring heat dissipation components into contact with liquids such as acids and bases that may corrode the heat dissipation components, or liquids used in the production of food, etc., where the leaching of foreign components must be avoided, and there is also the issue that it is difficult to apply the invention described in Patent Document 4. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] JP 2012-89466 A [Patent Document 2] JP 2015-2032 A [Patent Document 3] Japanese Patent Application Publication No. 10-293540 [Patent Document 4] JP 2023-33175 A Summary of the Invention [Problem to be solved by the invention]

[0010] An object of the present invention is to provide a protective structure that can be suitably used in liquid treatment devices and the like that are used by immersing them in liquid, and that can simultaneously waterproof and dissipate heat from heat-generating components such as light-emitting elements without the need for the heat dissipation member to come into contact with liquid.

[0011] As a result of extensive research into protective structures, the inventors have found that the above-mentioned problems can be solved by mounting the heat-generating component on a heat-dissipating member and water-tightly fixing the heat-dissipating member within a sealing member.

[0012] The present invention is a protective structure for a heat-generating component, comprising a heat dissipation member having a first region on one end side and a second region on the other end side, a heat-generating component installed in the first region, a first sealing member that accommodates the first region and is inserted into a connecting member, and a second sealing member through which the first sealing member is inserted and is watertight connected and fixed to the connecting member at a first location, and the second sealing member is watertight fixed to the first sealing member at a second location. Effect of the Invention

[0013] By combining the first sealing member that houses the heat-generating component with the second sealing member and the connecting member, the heat-generating component can be waterproofed and the generated heat can be dissipated by utilizing the second region, thereby achieving both waterproofing and heat dissipation. [Brief description of the drawings]

[0014] [Figure 1] This is the basic configuration of the present invention. [Diagram 2] 1 is an example of an installation method of the present invention. [Diagram 3] 13 is a modified example of the installation method of the present invention. [Figure 4] 4 shows an example of a specific shape of a second region of a heat dissipation member used in the present invention. [Diagram 5] 4 shows an example of a specific shape of a first region of a heat dissipation member used in the present invention. [Figure 6] This is an example of the present invention in which an auxiliary heat dissipation member is used. [Figure 7] 1 is an example of a liquid treatment device using the present invention. [Figure 8] 13 is a modified example of a liquid treatment device using the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The present invention will be described below with reference to Fig. 1. Fig. 1 shows the basic configuration of the protective structure of the present invention, in which a heat-generating component 10 is placed in a first region 21 present on one end side of a heat-dissipating member 20, and the first region 21 is housed inside a first sealing member 30. A second region 22 exists on the other end side of the heat-dissipating member 20. One end side of the first sealing member 30 is assumed to come into contact with liquid, and serves to protect the heat-generating component 10 from the liquid.

[0016] In the present invention, the first sealing member 30 is inserted into the connecting member 50, but the interface between the first sealing member 30 and the connecting member 50 is not necessarily watertight and can become a path for liquid to seep in from one end side to the other end side of the connecting member 50. In order to block liquid seeping in from this path at the other end side of the connecting member 50, a watertight structure is formed using the second sealing member 40.

[0017] The second sealing member 40 is disposed on the other end side of the connection member 50, and the first sealing member 30 is inserted therethrough, with one end side of the second sealing member 40 being watertightly connected and fixed to the other end side of the connection member 50. This connected and fixed location will hereinafter be referred to as the first location.

[0018] The first sealing member 30 is inserted into the second sealing member 40, and the second sealing member 40 is disposed on the other end side of the first sealing member 30 and is connected and fixed in a watertight manner, for example, by fusion bonding. This connected and fixed location will hereinafter be referred to as the second location.

[0019] Although the second location is usually near the other end of the second sealing member 40, the second location can be set at any location within the range where the effect of suppressing the infiltration of liquid intended by the present invention can be obtained.

[0020] In the present invention, the second sealing member 40 and the connection member 50 are connected and fixed in a watertight manner at the first location, so that infiltration of liquid via the first location can be blocked.

[0021] Furthermore, in the present invention, by fixing the second sealing member 40 to the first sealing member 30 in a watertight manner at the second location, it is possible to block the infiltration of liquid via the second location.

[0022] In other words, by forming watertight fixing portions at the first and second locations, liquid that penetrates between the first sealing member 30 and the connecting member 50 to the other end and leaks between the first sealing member 30 and the second sealing member 40 is blocked by the first and second locations and remains between the first sealing member 30 and the second sealing member 40, thereby preventing further penetration into the other end of the connecting member 50, resulting in a waterproof structure for the second region 22.

[0023] In addition, when a gap exists between the first sealing member 30 and the second sealing member 40 at the second location and it is difficult to fix the two together watertightly, it is preferable to provide an auxiliary sealing member 60 in the gap and fix the first sealing member 30 and the second sealing member 40 watertightly via the auxiliary sealing member 60.

[0024] From the viewpoint of accommodating the heat dissipation member 20 within the first sealing member 30 and from the viewpoint of inserting the second sealing member 40 into the first sealing member 30, the first sealing member 30 and the second sealing member 40 are preferably tubular, and a tube extruded from a resin material can be used.

[0025] When a tube extruded from a resin material is used as the first sealing member 30, it is preferable to use a tube made of the same resin material as the second sealing member 40. When both are made of the same resin material, watertight fixation can be easily achieved by heat fusing them together at the second location.

[0026] When the auxiliary sealing member 60 is used, a tube made of the same resin material as the first sealing member 30 and the second sealing member 40 can be preferably used.

[0027] A connection and fixing part for fixing the protective structure of the present invention in a watertight manner to a flow path through which the liquid in which the protective structure is immersed flows or to a tank or the like in which the liquid is stored is formed on one end side of the connecting member 50. The connection and fixing part makes it possible to prevent liquid from penetrating to the other end side of the connecting member 50 through a gap between the protective structure and the flow path or tank or the like.

[0028] One end side of the first sealing member 30 can be selectively adopted in various forms as long as it can prevent liquid from entering the inside of the first sealing member 30. When a resin tube is used as the first sealing member 30, in addition to forms for sealing the tube tip watertight, such as by thermally melting the tube tip to close it, by thermally fusing a cover member made of the same type of resin material to the tube tip, or by filling the inside of the tube tip with a filler, a form in which the protective structure of the present invention is formed on one end side of the first sealing member 30 can also be adopted.

[0029] The connecting member 50 used in the present invention is not particularly limited, and any embodiment can be appropriately selected and used within the scope in which the object of the present invention can be achieved.

[0030] In order to achieve the object of the present invention, the elements required for the connecting member 50 are that the first sealing member 30 can be inserted therethrough, that the second sealing member 40 can be watertight fixed at the other end, and that it can be watertight fixed to a flow path, tank, etc., and from the viewpoint of reliably and easily achieving watertight fixing, a pipe fitting 51 used for piping applications, etc. can be preferably used as the connecting member 50.

[0031] The other end side of the pipe joint 51 can accommodate a tubular member such as a pipe, and has a male thread 52 at the other end so that the tubular member can be fixed in a watertight manner by tightening a fixing nut 53. By using the tubular second sealing member 40 and the pipe joint 51, the second sealing member 40 can be fixed to the pipe joint 51 in a watertight manner reliably and easily.

[0032] One end of the pipe fitting 51 is formed with a male thread 54, and by wrapping sealing tape around the male thread 54 and screwing it into the female thread, it can be fixed watertight to a member having a female thread. Since it is expected that the flow paths, tanks, etc. in which the protective structure of the present invention is immersed will be provided with female threads that comply with the standards for piping members such as pipe fittings, by using the pipe fitting 51 as the connecting member 50, it is possible to reliably and easily fix it watertight to the flow path, tank, etc.

[0033] When installing the protective structure in a flow path, for example, as shown in Figure 2, the protective structure of the present invention can be connected to a T-joint provided in the middle of piping 90 which serves as the flow path, and the first sealing member 30 can be installed so as to intersect with the flow of liquid, or as shown in Figure 3(a), the T-joint to which the protective structure of the present invention is connected can be used as a 90-degree bend in the piping.

[0034] Another embodiment is one in which the protective structure of the present invention is connected to a cross joint. One example of this embodiment is one in which two protective structures are connected in a cross joint so that one end side (tip) of the first sealing member 30 faces each other, as shown in Fig. 3(b). In this case, the arrangement surfaces of the heat-generating components 10 may face in the same direction or in different directions.

[0035] Furthermore, when the protective structure of the present invention is connected to a cross joint, it is also possible to adopt an embodiment in which two opposing protective structures are integrated together, as shown in FIG. 3(c).

[0036] The joints to which the protective structure of the present invention is connected are not limited to those described above, and can be appropriately selected and used depending on the desired piping configuration and liquid treatment method, such as a three-way joint or a Y-shaped joint.

[0037] The above describes an embodiment in which pipe fitting 51 is used as connecting member 50 and male thread 54 of pipe fitting 51 is watertightly fixed to a T-shaped joint or the like provided in the middle of a pipe. However, the method of watertightly fixing connecting member 50 to a flow path, tank, or the like is not limited to the above, and a watertight fixing method such as welding, clamping, or an O-ring may be appropriately selected and used depending on the condition of the flow path, tank, etc.

[0038] One end side (first region 21) of heat dissipation member 20 in the present invention is housed in first sealing member 30 together with heat generating component 10, and is protected from liquid present around first sealing member 30.

[0039] On the other hand, the other end side (second region 22) of the heat dissipation member 20 protrudes from the other end side of the first sealing member 30 in order to dissipate heat generated in the heat-generating component 10 and conducted from the first region 21 to the second region 22.

[0040] As described above, liquid that penetrates between the first sealing member 30 and the connecting member 50 and into the other end side of the connecting member 50 is blocked by the first and second locations, which are fixed watertightly, and therefore does not reach the second region 22.

[0041] The second region 22 protruding from the other end side of the first sealing member 30 comes into contact with a coolant such as air, thereby dissipating the heat generated in the heat-generating component 10. The specific form of the heat-dissipating member 20 is not particularly limited, and any form can be appropriately selected and used as long as it does not significantly impede heat dissipation from the heat-generating component 10 and the desired heat dissipation performance is obtained.

[0042] The heat dissipation member 20 used to promote heat dissipation from the heat-generating component 10 is preferably made of a thermally conductive material such as silver, copper, aluminum, stainless steel, brass, etc., and these materials may be surface-treated to promote heat dissipation as necessary.

[0043] In order to promote heat dissipation, the second region 22 is preferably shaped to increase the surface area of ​​the portion that comes into contact with the refrigerant such as air. The simplest form of the second region 22 is the cylindrical shape shown in Fig. 4(a), but other forms such as the form shown in Fig. 4(b) in which holes are provided on the side to increase the surface area, the form shown in Fig. 4(c) imitating the pin fin shape widely used in various heat dissipation members, and the forms shown in Fig. 4(d) and Fig. 4(e) imitating the plate fin shape also used in various heat dissipation members can also be used, and other forms such as the form in which the surface is provided with projections and recesses to increase the surface area can also be used.

[0044] In addition, it is preferable to ensure a sufficient contact area between the heat generating component 10 and the heat dissipation member 20 in the first region 21. For example, when the heat generating component 10 is a chip-type LED, an embodiment in which the installation portion is planar can be given. Also, a structure that promotes heat dissipation from the heat generating component 10 itself may be applied, such as mounting the chip-type LED on a wiring board with high heat dissipation properties and installing the wiring board in the first region 21.

[0045] The structure of the first region 21 can be selected from any suitable form, including a structure in which a rotation axis is provided to rotate the first region 21 as shown in Fig. 5(a), a structure in which a plurality of heat-generating components 10 are used and placed on the same plane in the first region 21 as shown in Fig. 5(b), and a structure in which a plurality of planes with different angles are provided in the first region 21 and a heat-generating component 10 is placed on each plane as shown in Fig. 5(c). When the heat-generating component 10 is a chip-shaped LED, such a form can be used to expand the effective illumination range of the LED.

[0046] The heat dissipation member 20 may be an integrally molded member or a combination of multiple members. From the viewpoint of promoting heat dissipation from the heat-generating component 10, the integrally molded member is preferably used, while from the viewpoint of ease of assembly of the protective structure and the viewpoint of providing the above-mentioned mechanism in the first region 21, the combination of multiple members is preferably used.

[0047] When constructing the heat dissipation member 20 by combining multiple components, by combining a first component having an area that becomes the first region 21 formed according to the aspect of the heat-generating component 10 with a second component having an area that becomes the second region 22 formed into a predetermined fin shape, it is possible to efficiently dissipate heat from the heat-generating component 10 while ensuring ease of assembly of the protective structure.

[0048] When adopting a structure in which the first region 21 described above is rotated or a structure in which multiple planes on which the heat-generating component 10 is placed at different angles, it is practical to combine multiple members to form the heat dissipation member 20. When combining multiple members to form the heat dissipation member 20, it is also possible to select a mode in which multiple first members each having an area that will become the first region 21 are combined with a second member having an area that will become the second region 22, as shown in FIG.

[0049] In order to improve the heat dissipation effect of the heat dissipation member 20 and to improve the ease of handling when assembling and installing the protective structure, an auxiliary heat dissipation member 70 may be combined with the heat dissipation member 20 as shown in Fig. 6. The form of the auxiliary heat dissipation member 70 is not particularly limited, and any form can be appropriately selected and used. Representative forms of the auxiliary heat dissipation member 70 are shown below.

[0050] One example of an embodiment of the auxiliary heat dissipation member 70 for enhancing the heat dissipation effect is an auxiliary heat dissipation member 70 configured to be connected to the connecting member 50 or to a member constituting a flow path, tank, etc. in which the protective structure of the present invention is immersed.

[0051] The members constituting the flow paths, tanks, etc. in which the protective structure of the present invention is immersed, and the connection members 50 connected to these members, are cooled by liquid. By configuring the auxiliary heat dissipation member 70 to be connected to the members constituting the flow paths, tanks, etc. or the connection members 50, the liquid in which the protective structure of the present invention is immersed can be used to cool the heat dissipation member 20, and an improvement in the heat dissipation effect can be expected.

[0052] When the auxiliary heat dissipation member 70 is used, it is preferable that the second region 22 has a shape that takes into consideration the connection with the auxiliary heat dissipation member 70. For example, a connecting portion is formed at the other end of the heat dissipation member 20, and a fixing portion with the auxiliary heat dissipation member 70 is provided. In this case, it can be considered that the other end side of the heat dissipation member 20 and the auxiliary heat dissipation member 70 form the second region 22 integrally.

[0053] Even when the auxiliary heat dissipation member 70 is used, the heat dissipation member 20 can be used in either an integrally molded form or a form in which multiple parts are combined, and the auxiliary heat dissipation member 70 can also be used in either an integrally molded form or a form in which multiple parts are combined, by selecting appropriately.

[0054] In order to further promote heat dissipation, a cooling device such as an air-cooling fan or a Peltier element may be used in combination with the heat dissipation member 20 and the auxiliary heat dissipation member 70.

[0055] The protective structure of the present invention is intended to be used as a waterproof structure for heat-generating component 10 when the function of heat-generating component 10 is used to exert a desired effect on the surrounding liquid, or when heat-generating component 10 is used to detect the state of the surrounding liquid.

[0056] Typically, the heat-generating component 10 operates upon receiving a supply of electric power, so the protective structure of the present invention is provided with a power supply means for supplying electric power to the heat-generating component 10. A typical example of the power supply means is a power line. In the protective structure of the present invention, since the watertight structure prevents liquid from entering from one end, a power line 80 (not shown) is provided on the other end, making it possible to supply electric power to the heat-generating part without being affected by liquid.

[0057] Specific examples of the heat-generating component 10 used in the present invention include a light-emitting element that irradiates light onto the liquid present outside the first sealing member 30, a light-receiving element that detects the light irradiated onto the liquid, and a photointerrupter having opposing light-emitting and light-receiving parts.

[0058] Specific examples of light-emitting elements include deep ultraviolet LEDs and ultraviolet LEDs for liquid sterilization, LEDs for liquid illumination, LDs for measuring liquid concentration, turbidity, contamination state, etc., ultraviolet lamps, illumination lamps, etc. The wavelength band of the light irradiated by the light-emitting element can be selected according to the application.

[0059] When a deep ultraviolet LED or ultraviolet LED, which is a type of light-emitting element, is used as the heat-generating component 10, the protective structure of the present invention can be used as a liquid treatment device that performs treatments such as sterilization on liquid by operating the heat-generating component 10.

[0060] A specific example of the light receiving element is a photodiode that measures the amount of light such as laser light to measure the concentration and degree of contamination of a liquid.

[0061] Considering that a light emitting element, a light receiving element, or the like is used as the heat generating component 10, at least a part of the first sealing member 30 is formed from a material having light transmitting properties.

[0062] Examples of light-transmitting materials include optical glass such as quartz glass, light-transmitting ceramic materials, and resin materials such as acrylic resins and fluorine-based resins.

[0063] Considering the ease of handling of the liquid treatment device using the protective structure of the present invention, it is preferable to form the first sealing member 30 from a material that is not easily damaged, and a resin material is preferably used. If the first sealing member 30 is formed from a material that is not easily damaged, it can also contribute to preventing damage and the scattering of materials into the liquid due to damage.

[0064] Considering the translucency and durability to the light emitted by the light emitting element, and the stain resistance to liquids, a fluororesin can be suitably used as the material for forming the first sealing member 30. As the fluororesin, PFA, FEP, ETFE, PTFE, etc. can be appropriately selected and used.

[0065] Additionally, the protective structure of the present invention may include a detection member that detects the state of the liquid present around the first sealing member 30. Specific examples of the detection member include a water level sensor that determines whether the protective structure is immersed in liquid, a concentration sensor that measures the concentration of a specific component contained in the liquid, a temperature sensor that measures the temperature of the liquid, a flow rate sensor that measures the flow rate of the liquid, etc.

[0066] When a detection member is provided, the members constituting the protective structure of the present invention may be modified as necessary to be suitable for the intended detection. For example, when an optical water level sensor is provided inside the first sealing member 30, the outer peripheral surface of the first sealing member 30 may be modified to a shape suitable for water level detection.

[0067] When a detection member is provided, the operation of the heat generating component 10 may be controlled based on the detection result. For example, if the detection member is a water level sensor, the heat generating component 10 may be operated when the protective structure is in contact with the liquid, and the operation of the heat generating component 10 may be stopped when the protective structure is outside the liquid. If the detection member is a concentration sensor, the heat generating component 10 may be operated when the concentration of the component to be detected exceeds a predetermined threshold.

[0068] As described above, the protective structure of the present invention can be applied to a liquid treatment device that performs a predetermined treatment on a liquid by the operation of the heat generating component 10. EXAMPLES

[0069] An example of a liquid treatment device to which the protective structure of the present invention is applied will be described below.

[0070] [Example 1] A liquid treatment device 100-1 of Example 1 is shown in Fig. 7. The liquid treatment device 100-1 was configured as follows.

[0071] The heat-generating component 10 used was a highly heat-dissipating wiring board 12 made mainly of aluminum, measuring 5 mm in width and 17 mm in length, equipped with an ultraviolet LED 11 with a maximum output of 65 mW and a recommended operating temperature of 65°C or less, which was used as a light source for the liquid treatment device.

[0072] An insulated wire with a jacket 81 made of fluororesin was used as the power supply line 80 and was connected to the electrode of the wiring board 12 .

[0073] The heat dissipation member 20 used was one that was integrally molded by processing a cylindrical copper member, and had a first region 21 on one end side and a second region 22 on the other end side.

[0074] A high heat dissipation wiring board 12 having a power supply line 80 connected thereto was fixed to the center of the flat surface formed in the first region 21.

[0075] As the first sealing member 30, a tube made of fluororesin having a length of 70 mm, an inner diameter of 6 mm, and an outer diameter of 8 mm was prepared, and one end of the tube was curled by heat melting processing to form a watertight structure.

[0076] As the second sealing member 40, a tube made of fluororesin having a length of 20 mm, an inner diameter of 8 mm, and an outer diameter of 12 mm was prepared and inserted into the first sealing member 30, with the end faces of both members being flush with each other at the other end side.

[0077] The contact surfaces of the outer peripheral surface of the first sealing member 30 and the inner peripheral surface of the second sealing member 40 were heat fused within a range of 5 mm from the other end toward the one end, where the end faces were flush, to connect and fix them watertight. This connected and fixed location becomes the second location.

[0078] As the connection member 50, a copper pipe joint 51 having an applicable pipe outer diameter of 12 mm was prepared, and the first sealing member 30 was inserted and protruded 20 mm from one end side of the pipe joint 51.

[0079] At this time, one end of the second sealing member 40 with the first sealing member 30 inserted and fixed thereto is housed in the pipe joint 51 at the other end side of the pipe joint 51, and by tightening a fixing nut 53 onto a male thread 52 formed to surround the housing portion, the second sealing member 40 is fixed watertight to the pipe joint 51 to form the first location. At the same time, the first sealing member 30 is fixed to the pipe joint 51 via the second sealing member 40.

[0080] The heat dissipation member 20 is inserted into the first sealing member 30 fixed to the pipe joint 51 so that the LED 11 is located at one end. At this time, the second region 22 located on the other end side of the heat dissipation member 20 protrudes from the other end of the first sealing member 30.

[0081] A cup-shaped copper auxiliary heat dissipation member 70 was attached to a location near the other end of the second region 22 protruding from the other end of the first sealing member 30 so as to cover the heat dissipation member 20 .

[0082] One end of the auxiliary heat dissipation member 70 was fixed to the pipe joint 51 so as to be in thermal contact with the pipe joint 51 .

[0083] The liquid treatment device 100-1 according to the embodiment of the present invention is thus completed. By screwing the male thread 54 of the pipe joint 51 wrapped with sealing tape into the female thread of a pipe, the device can be used for a specific purpose.

[0084] [Example 2] A liquid treatment device 100-2 of Example 2 is shown in Fig. 8. In the liquid treatment device 100-2, the aspect of the heat dissipation member 20 is changed from that of the liquid treatment device 100-1 of Example 1, and a heat dissipation member 20 having two flat surfaces with different angles in the first region 21 is used, and a heat-generating component 10 is installed on each flat surface.

[0085] The heat dissipation member 20 of Example 2 was also integrally molded by processing a cylindrical copper member, and had a first region 21 on one end side and a second region 22 on the other end side, with a connection portion with the auxiliary heat dissipation member 70 on the other end side. The difference from Example 1 is that the first region 21 has a flat surface at a different angle.

[0086] As the heat generating components 10, ultraviolet LEDs 11 mounted on a high heat dissipation wiring board 12 similar to that in Example 1 were used, and were placed on different planes in the first region 21 of the heat dissipation member 20, respectively.

[0087] The other configurations are the same as those in the first embodiment.

[0088] The shapes of the members used in each embodiment are merely examples, and can be changed as appropriate to suit the shape required for heat dissipation. As mentioned above, cooling devices such as air-cooled fans and Peltier elements can also be used in combination.

[0089] [Heat dissipation performance evaluation test] The heat dissipation performance of Example 1 was evaluated.

[0090] The LED 11 of the liquid treatment device 100-1 was driven by applying a voltage so that the light emitted through the sealing member 30 was 10 mW, and the temperature in the vicinity of the LED 11 was measured by a thermocouple.

[0091] The measurement was performed by immersing the liquid treatment device 100-1 in water so that the surface of one end of the pipe joint 51 was in contact with the water surface, and exposing the auxiliary heat dissipation member 70 to air in a windless state. The room temperature and water temperature were both 25°C.

[0092] Assuming that the liquid treatment device 100-1 is operated for a certain period of time, the temperature was measured 5 minutes after driving the LED 11, and was found to be 52°C, which is sufficiently lower than the recommended operating temperature threshold of 65°C.

[0093] When the LED 11 was continued to be driven even after 5 minutes had passed, the temperature gradually increased but did not reach 65° C., confirming the heat dissipation effect of the present invention.

[0094] In addition, when the water infiltration into the liquid treatment device 100-1 was checked after the evaluation test, it was confirmed that although water infiltrated between the first sealing member 30 and the pipe fitting 51 due to capillary action, it was blocked at the first and second locations which were fixed watertightly, and thus the intended waterproofing effect was achieved.

[0095] As described above, the protective structure of the present invention can be suitably used in a liquid treatment device provided midway through a pipe that serves as a flow path. [Industrial Applicability]

[0096] INDUSTRIAL APPLICABILITY The protective structure of the present invention can be suitably used in liquid treatment devices, liquid sterilization devices, liquid concentration control devices, lighting devices, and the like, which are used by being immersed in liquid flowing through a pipe. [Explanation of symbols]

[0097] 1 Protective structure 10 Heat generating parts 11 UV LED 12 Wiring board 20 Heat dissipation material 21 First area 22 Second area 30 First sealing member 40 Second sealing member 50 Connection member 51 Pipe fittings 52 Male thread (for screwing in the fixed nut) 53 Fixing nut 54 Male thread (for piping connection) 60 Auxiliary sealing member 70 Auxiliary heat dissipation member 80 Power line 90 Piping 100 Liquid treatment device

Claims

1. A protective structure for a heat-generating component, a heat dissipation member having a first region on one end side and a second region on the other end side; The heat generating component is disposed in the first area; and a first sealing member that accommodates the first region and is inserted into the connection member; a second sealing member through which the first sealing member is inserted and which is watertightly connected and fixed to the connecting member at a first location; The second sealing member is fixed to the first sealing member at a second location in a watertight manner.

2. 2. The protective structure of claim 1, wherein said connecting member comprises a pipe joint.

3. 2. The protective structure of claim 1, wherein the first sealing member is a tubular member.

4. The protective structure according to any one of claims 1 to 3, further comprising an auxiliary heat dissipation member in the second region.

5. 5. The protective structure according to claim 4, wherein the auxiliary heat dissipation member is thermally connected to the connection member.

6. The protective structure described in any one of claims 1 to 3, characterized in that the heat dissipation member is constructed by combining a first member having a first region on one end side and a second member having a second region on the other end side.

7. The protective structure according to claim 6 , further comprising an auxiliary heat dissipation member in the second region.

8. 8. The protective structure according to claim 7, wherein the auxiliary heat dissipation member is thermally connected to the connection member.

9. A protective structure for a light emitting component, comprising: a heat dissipation member having a first region on one end side and a second region on the other end side; The light emitting component is disposed in the first region; and a first sealing member that is transparent and that accommodates the first region and that is inserted into the connection member; a second sealing member through which the first sealing member is inserted and which is watertightly connected and fixed to the connecting member at a first location; The second sealing member is fixed to the first sealing member at a second location in a watertight manner.

10. 10. The protective structure of claim 9, wherein the first sealing member is a tubular member.

11. 10. The protective structure of claim 9, wherein the connecting member comprises a pipe joint.

12. The protective structure according to any one of claims 9 to 11, further comprising an auxiliary heat dissipation member in the second region.

13. The protective structure according to claim 12, wherein the auxiliary heat dissipation member is thermally connected to the connection member.

14. The protective structure described in any one of claims 9 to 11, characterized in that the heat dissipation member is constructed by combining a first member having a first region on one end side and a second member having a second region on the other end side.

15. The protective structure according to claim 14, further comprising an auxiliary heat dissipation member in the second region.

16. 16. The protective structure according to claim 15, wherein the auxiliary heat dissipation member is thermally connected to the connection member.

17. A liquid treatment device comprising the protective structure according to any one of claims 9 to 11.

18. A liquid treatment device comprising the protective structure according to claim 12.

19. A liquid treatment device comprising the protective structure according to claim 13.

20. A liquid treatment device comprising the protective structure according to claim 14.

21. A liquid treatment device comprising the protective structure according to claim 15.

22. A liquid treatment device comprising the protective structure according to claim 16.

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