KR0143941B1 - Static thermistor device - Google Patents

Abstract

The static thermistor device according to the present invention includes a static thermistor element 2 sandwiched between a pair of feed terminals, a heat sink having a cylindrical heat dissipation portion and a pair of heat collecting portions, and a case; The above-mentioned positive characteristic thermistor element is housed in the case which was placed in the state arranged between a pair of collection parts; The case described above is filled with insulating resin or insulating rubber; And a pair of electrical feed terminals and a pair of electrical current collectors electrically insulated from each other.

Description

Static thermistor device

1 is an exploded perspective view of a positive temperature thermistor (PTC) device according to a first embodiment of the present invention.

2 is an external perspective view of the thermistor device shown in FIG.

3 is a cross-sectional view showing the internal structure of the thermistor device shown in FIG.

4 is a cross-sectional view taken along the line Y-Y 'of FIG.

5 is an exploded perspective view of a static thermistor device according to a second embodiment of the present invention.

6 is a cross-sectional view of the thermistor device shown in FIG.

7A, 7B and 7C are partially enlarged sectional views of the thermistor device shown in FIG.

8 is a perspective view of a static thermistor device according to a third embodiment of the present invention.

FIG. 9 is an exploded perspective view of the thermistor device shown in FIG. 8.

FIG. 10 is a partial cross-sectional plan view of the thermistor device shown in FIG. 8 in a state in which a lid is removed.

FIG. 11 is a partial cross-sectional plan view of a modified example of the thermistor device shown in FIG. 8 in a state in which a lead is removed.

12 is a perspective view of a static thermistor device according to a fourth embodiment of the present invention.

FIG. 13 is an exploded perspective view of the thermistor device shown in FIG. 12.

FIG. 14 is a partial cross-sectional plan view of the thermistor device shown in FIG. 12 in a state in which a lead is removed.

FIG. 15 is an exploded perspective view of a modification of the thermistor device shown in FIG. 12. FIG.

16 is an external perspective view of a static thermistor device according to a fifth embodiment of the present invention.

FIG. 17 is an exploded perspective view of the thermistor device shown in FIG.

FIG. 18 is a partial cross-sectional plan view of the thermistor device shown in FIG. 16 in a state in which the lid is removed.

19 is an exploded perspective view of a modification of the thermistor device shown in FIG.

FIG. 20 is a cross-sectional view of a liquid type mopquito repeller equipped with a static thermistor device according to the present invention.

21 is an exploded perspective view of a conventional static thermistor device.

22 is a cross-sectional view of the conventional static thermistor device shown in FIG.

* Explanation of symbols for the main parts of the drawings

1a, 1b: current supply terminals 2: PTC device

3: heat sink 4: heat radiating portion

5: heat collecting portion 6a, 6b, 6c, 6d: case

6p, 6q, 6v, 6w: side of case 6r: inner wall of case

7a, 7b, 7c. 7d: Slit 8a, 8b, 8c, 8d: Cavity

9a: slope 10b, 10c, 10d: slit

11b and 11c: lid 11d: lead-out slit

T1: insulating tube R1: spring terminal

V1: Block 2: Insert Hole

3: Insertion Slit

The present invention relates to a positive temperature coefficicent thermistor (PTC) device for use in a liquid type mosquito repeller or a fragrance for vaporizing pesticides.

The configuration of a conventional static characteristic thermistor device will be described with reference to FIG. 21 and FIG.

The static thermistor 41 shown in FIGS. 21 and 22 has a case 42 open upward in the drawing, the case 42 having a cylindrical portion 42a extending vertically from the bottom at its center portion, and the entire outer circumference of the cylindrical portion 42a. A ring-shaped groove 42b formed in the groove. In the groove 42b of the case 42, a ring-shaped static thermistor (hereinafter referred to as PTC) element 43 is stored in a state sandwiched between a pair of current supply terminals 44. The groove portion 42b is filled with the resin 45. The inner diameters of the PTC element 43 and the feed terminal 44 are larger than the outer diameters of the cylindrical portion 42a of the case 42, so that the cylindrical portion 42a can easily pass through the PTC element 43 and the feed terminal 44 during assembly. Therefore, a gap is formed between the PTC element 43, the power feed end 44, and the cylindrical portion 42a, respectively. This gap is also filled with resin 45, forming a resin layer 46 shown in FIG. The lid 47 then engages the cylindrical portion 42a over the groove portion 42b to seal the case 42. In addition, a grommet 48 made of aluminum or the like penetrates through the cylindrical portion 42a of the lid 47 and the case 42, and is caulking on the opposite end to fix the metal joint. In this way, the lid 47 and the case 42 are assembled integrally. In addition, the inner diameter of the cylindrical portion 42a of the case 42 is larger than the outer diameter of the cylindrical portion of the packing 48 so that the packing 48 can easily pass through the cylindrical portion 42a during assembly. In addition, the packing 48 is bent inward upon caulking. In this way, an air layer 49 is formed between the cylindrical portion 42a of the case 42 and the packing 48.

When the static thermistor device 41 configured as described above is used in a liquid phase deodorizer or a fragrance (not shown), the liquid-absorbing core for pulling up the insecticide or the aromatic liquid is packed. 48 passes through the power supply terminal 44, passes the PTC element 43, and generates heat to the PTC element 43. The heat generated in this way is conducted to the packing 48 via the resin layer 46, the cylindrical portion 42a of the case 42, and the air layer 49, and is also conducted to the packing 48 via the feed terminal 44, the case 42, the lead 47, and the air layer 49. The heat dissipated from the packing 48 heats the liquid absorption core to vaporize the pesticide liquid or the aromatic liquid and dissipate it.

However, the conventional static characteristics thermistor device 41 has the following problem.

In other words. Molding and firing for obtaining the ring-shaped PTC element 43 are difficult. In addition, since the PTC element 43 is annular and easily warped, post-processing such as lapping is required, and a lot of manpower is consumed for such a task.

In addition, the heat conduction path consists of the PTC element 43-resin layer 46-case 42-air layer 49-packing 48, or the PTC element 43-feed terminal 44-case 42-lead 47-air layer 49-packing 48, The path from to packing 48 is long, and heat that must be conducted to packing 48 is lost to case 42, resulting in low thermal efficiency. In addition, since the thermal conductivity is conducted via the air layer 46 which is small, the thermal efficiency is further lowered.

In addition, since the case 42, which occupies most of the static thermistor device 41, is included in the heat conduction path, when the temperature thereof increases, the reliability of the static thermistor device 41 falls.

In addition, since the case 42 is heated to a high temperature to some extent, the material constituting the case has a limitation in that heat resistance is excellent.

Accordingly, an object of the present invention is to provide a static thermistor device having good thermal efficiency and excellent reliability by using a PTC element which is easy to be molded and fired, but which is not easily twisted.

In order to achieve the above object, according to the present invention, a positive temperature coefficient thermistor element (hereinafter referred to as a PTC element) sandwiched between a pair of feed terminals, a pair of cylindrical heat radiating portions, and a pair A heat sink having a heat collecting portion thereof, and a case; The PTC element sandwiched between the pair of electrical feed terminals described above is housed in a case which is disposed in a state arranged between the pair of heat collecting portions; The case described above is filled with insulating resin or insulating rubber; Provided are a static thermistor device characterized in that the pair of electrical feed terminals and the pair of electrical collectors are electrically insulated from each other.

In the above apparatus, the electrically insulating resin or the insulating rubber may be excellent in thermal conductivity.

In addition, the pair of electrical feed terminals may have a flat terminal structure, and the PTC element and the feed terminal are electrically contacted with each other by a conductive adhesive.

At least one side wall surface inside the case is designed to be inclined so that the width of the cavity of the case is wider from the bottom side toward the opening of the case.

In addition, the PTC element sandwiched between the pair of electrical feed terminals has a pair of electrical houses of a heat sink having a cylindrical heat dissipation unit and a pair of heat collecting units together with an insulator inserted between the thermistor element and the heat collecting unit. Can be sandwiched between the heat. In addition, the pair of heat collecting portions of the aforementioned heat sink are accommodated in the case, while the heat dissipating portion may have a structure installed outside the case.

The electrical insulator is made of elastomer.

The electrical insulator may be a tube made of an elastomer.

The electrical insulator may be a tube made of thermally-contractive elastomer.

In addition, each of the pair of power feed terminals described above may have a member having a spring property to the contact portion with the aforementioned PTC element. In addition, the PTC element and the electricity feeding terminal, which are in electrical contact with each other, can be brought into contact with each other while the PTC element, the electrical power supply terminal, and the electrical insulator, which are electrical, are housed in the case.

The aforementioned PTC device, the pair of power feed terminals, and the pair of insulators may be inserted between the pair of collectors and pressed together.

The total thickness of the PTC element, the pair of feeder terminals, and the pair of insulators, which are portions inserted between the pair of collectors, are set larger than the distance between the pair of collectors of the heat sink. In this way, the PTC element, the pair of power feed terminals, and the insulators described above can be inserted between the pair of collectors, and pressed together.

According to another aspect of the present invention, a heat sink, an insulator, and an electrical device having a PTC element, a pair of feed terminals having an electric PTC element interposed therebetween, a heat dissipation portion, and a pair of heat collecting portions formed in connection with the heat dissipation portion; A case in which the PTC element is housed; The electrical PTC device and the electrical power feeding terminal are inserted into the electrical insulator; The electrical insulator is disposed between the pair of electrical current collectors; A static characteristic device is provided, wherein an elastic support member is arranged between a pair of said heat collection parts and an inner wall of said case.

In the static thermistor device described above, the aforementioned supporting member may be a spring terminal. According to still another aspect of the present invention, a PTC element, a pair of feed terminals with an electric PTC element interposed therebetween, a heat sink having a heat dissipation portion and a pair of heat collecting portions connected to the heat dissipation portion, and an electric PTC A case in which the element is housed; The foregoing PTC element and the electrically fed feed terminal are inserted into a block made of an elastic insulator; The electrical block is disposed between the pair of collecting portions of the electrical heat sink; A pair of heat collecting portions of the aforementioned heat sink are housed in the case, while the heat dissipating portion is provided to the outside of the case.

According to still another aspect of the present invention, a PTC element, a pair of feed terminals with an electric PTC element interposed therebetween, a heat sink having a heat dissipation part and a pair of heat collecting parts connected to the heat dissipation part, and an electric PTC A case in which the element is housed; A pair of heat collecting portions of the electrical PTC element, the electrical feed terminal, and the electrical heat sink are inserted into a block made of an insulator having elasticity; The foregoing block is provided with a static thermistor device characterized in that it is housed in the aforementioned case.

In the static thermistor devices of the present invention described above, heat generated in the PTC element is conducted to the heat sink via a feed terminal, an insulating resin, an insulator, or the like. In addition, due to the elasticity of the insulator or the block, the members of the PTC element, the power supply terminal, and the heat sink are strongly adhered to each other, thereby improving the thermal efficiency.

Hereinafter, a description will be given with reference to FIGS. 1 through 4 of a static thermistor according to a first embodiment of the present invention. According to FIG. 1, a disc-shaped PTC element 2 having two main faces 2a and a side face 2b is inserted between a pair of feed terminals 1a made of stainless steel and degreased so that the front surfaces of both main faces 2a are fed. It is fitted in contact with 1b. The heat sink 3 is made of aluminum, and includes a heat sink 4 having a substantially cylindrical shape, and a pair of heat collectors 5 forming a pair of flat plates.

The PTC element 2 sandwiched between the pair of electricity, that is, the shear 1a, is inserted between the pair of heat collecting portions 5 of the heat sink 3 described above. The pair of collectors 5 is housed in case 6a of an insulator such as polyphenylene sulfide (PPS).

As described above, after the PTC element 2, the pair of feed terminals 1a and the heat sink 3 are stored in the case 6a, an insulating resin or rubber having excellent thermal conductivity, for example, room temperature vulcanizing (RTV) silicone rubber In a case 6a to form a hermetic structure.

The case 6a described above has a cavity 8a for accommodating the PTC element 2, the pair of power supply terminals 1a, and the pair of heat collecting portions 5. As shown in FIG. 4, the inclination 9a is formed in the side surface of the cavity 8a, and the opening side is wider than the bottom side. This makes the flow of the flexible resin in the case 6a uniform, so that the unfilled part (air layer) does not remain even after the resin is filled. As a result, the thermal conductivity of the heat sink 3 can be increased.

Moreover, the protrusion 10a is formed in the center part of the bottom face of case 6a so that case 6a and PTC element 2 may be in line contact with each other. By these projections, the filling insulating resin can flow to the bottom of the PTC element 2, can conduct heat from the bottom of the PTC element 2 to the heat sink 3, and can heat the heat sink 3 efficiently.

Moreover, the recessed part 11a and the convex part 12a are formed in the bottom face in case 6a, respectively. The recess 11a is used to determine the position of the heat sink 3. The recess 11a can be used to keep the distance A between the feed terminal 1a and the heat collecting portion 5 of the heat sink 3 constant, thereby reducing the temperature non-uniformity of the heat sink 3 during assembly.

The convex part 12a is formed so that it may be arrange | positioned at both sides of each of a pair of feed terminal 1a in which PTC element 2 is inserted. In this way, when the insulating resin is filled in the case made of an insulator, the minimum electrical path between the feed terminal 1a and the heat collecting portion 5 of the heat sink 3 can be set to the length B-C shown in FIG. In this way, it is possible to satisfy the 4KV specified by the external withstand voltage for 200V without increasing the distance A between the power supply terminal 1a and the heat collecting portion 5 to 4 mm or more.

In this embodiment, stainless steel is used as a material forming the pair of feed terminals 1a. However, by using a nickel-plated metal material on other metal materials, especially copper alloys such as beryllium copper and phosphor bronze, the heat dissipation from the PTC element 2 can be improved to heat sink. It is possible to efficiently conduct heat to 3. Heat sink 3 is preferably made of a material with good thermal conductivity such as brass or copper.

Hereinafter, a static thermistor device according to a second embodiment of the present invention will be described with reference to FIGS. 5 to 7. The same parts as those in the first embodiment are denoted by the same reference numerals, and descriptions of these parts are omitted.

In FIG. 5, a pair of feed terminals 1b is formed in substantially L shape, and PTC element 2 is inserted between one end part. Moreover, the holding part 1p which has spring property (elasticity) is formed in the contact part of each power supply terminal 1b and the PTC element 2. As shown in FIG. In a state where the PTC element 2 is fitted, a pair of feed terminals 1b is inserted into the tube T1. The tube T1 is made of a rubber material such as silicon or fluorine, or an insulator such as Kapton.

In FIG. 5, the projection 5p is formed in the pair of heat collecting parts 5 of the heat sink 3 near the heat radiating part 4. As shown in FIG.

As described above, the combined PTC element 2, the pair of feed terminals 1b, and the tube T1 are inserted into the pair of collectors 5 of the heat sink 3, and the pair of collectors 5 are housed in a case 6b made of an insulator such as PPS. do. The case 6b has a cavity 8b for accommodating the PTC element 2, the pair of feed terminals 1b, the tube T1, and the heat sink 3 (excluding the heat dissipation portion 4). On the inner side surface of the case 6b, the projection 9b is formed so that the contact portion with the heat sink 3 is in line contact. In FIG. 5, slits 7b are formed on the left side of the case 6b. Through the slit 7b, the heat radiating portion 5 of the heat sink 3 protrudes out of the case 6b. In addition, in FIG. 5, a slit 10b is formed on the right side of the case 6b, through which the other end of the pair of feed terminals 1b protrudes out of the case 6b. In this structure, the projection 5p is formed in the pair of heat collecting parts 5 of the heat sink 3, so that the case 6b can be prevented from escaping from the case 6b after the heat sink 3 is inserted.

In addition, a lead 11b made of PPS or the like is attached to the case 6b on the upper portion to form a simple sealing structure.

The protrusion 9b formed inside the case 6b can reduce the amount of heat conducted from the PTC element 2 to the case 6b via the heat sink 3. Therefore, the heat conduction loss to the heat dissipation part 4 of the heat sink 3 can be reduced, and the temperature at which the case 6b is heated can be reduced.

As shown in FIG. 7A, the holding portions 1p of the pair of feed terminals 1b have a spring shape, and as shown in FIG. 7B, the PTC element 2, the pair of feed terminals 1b, and the tube T1 have a case 6b (7b). (Not shown in the figure), each of the pair of feed terminals 1b is in surface contact with the PTC element 2,

As shown in Figs. 7B and 7C, the total thickness D of the PTC element 2 and the pair of feed terminals 1b and the tube T1, which is a portion inserted between the pair of collecting portions 5 of the heat sink 3, is a pair of the heat sinks 3, respectively. It is set larger than the distance E between the heat collecting parts 5 of.

Therefore, the PTC element 2, the pair of feed terminals 1b, and the tube T1 are inserted between the pair of collector portions 5, and the pressure caused by the spring action of the holding portion 1p of the pair of feed terminals 1b and the pressure due to the elasticity of the tube T1 It can be compressed by each other, thereby improving the reliability of the spark (spark) and the like.

In addition, the tube T1 may be made of another insulator having good thermal conductivity and elasticity instead of the above-described material. In addition, the insulation sheet made of silicone resin, kapton, or the like may be packaged with the PTC device 2 and the feed terminal 3 with the PTC device 2 inserted therein. In addition, the tube T1 may be made of an insulator (silicone resin or the like) which is heat shrinkable and elastic. In the case of using such a tube T1, the PTC element 2 is inserted into a pair of feed terminals 1b having a spring member, the PTC element 2 and the feed terminal 1b are inserted again into the tube T1, and the tube T1 is heated to heat shrink. These can be inserted in the heat sink 3 (not shown in the figure). In this way, by using the tube T1 made of a heat shrinkable and elastic insulator, the positioning of the PTC element 2 and the pair of feed terminals 1b can be easily performed, and therefore assembly can be facilitated.

In this embodiment, the lid 11b is used to form a simple sealed structure in the case 6b. Instead of the lid 11b, the inside of the case 6b can be sealed by filling the cavity of the case 6b with a resin such as silicone or epoxy resin.

Hereinafter, a static thermistor device according to a third embodiment of the present invention will be described with reference to FIGS. 8 to 10. The same parts as those in the first embodiment or the second embodiment are denoted by the same reference numerals, and descriptions of these parts are omitted.

8 and 9, the PTC device 2 is inserted into a tube T1 sandwiched between one end of a pair of feed terminals 1b. The tube T1 into which the PTC element 2 and the pair of feed terminals 1b are inserted is inserted between the pair of collection portions 5 of the heat sink 3 and is housed in a case 6c having a cavity 8c and made of an insulator such as PPS. Moreover, it protrudes out of the case 6c through the 1st slit 10c formed in the side surface 6p of the case 6c in the other terminal part of the pair of feed terminal 1b. In addition, the heat radiating part 4 of the heat sink 3 protrudes out of the side surface 6q of the case 6c. In addition, the heat radiating part 4 of the heat sink 3 protrudes out of the case 6c through the 2nd slit 7c formed in the side surface 6q of the case 6c. As shown in Fig. 10, a spring terminal R1 made of stainless steel or the like and having spring property is inserted between each of the opposed inner walls 6r of the case 6c and the heat collecting portion 5, and having spring property. By the pressure of this spring terminal R1, a pair of collection part 5 hold | maintains tube T1, and tube T1, the feed terminal 1b, and PTC element 2 are crimped | bonded with each other.

The lid 1b is fixed to the cavity 8c for closing the cutter 8c of the case 6c in which each of these members is housed.

In the present embodiment, by using the spring terminal R1 as the supporting member, each member can be easily inserted between the pair of the heat collecting parts 5 and the inner wall 6r of the case 6c at the time of assembly, thereby providing a strong adhesion strength between the members. You can get it.

The assembling process is not limited to the above-described embodiments. For example, after storing the tube T1 in which the PTC element 2 is inserted into the case 6c, the pair of heat collecting parts 5 of the heat sink 3 may be inserted into the case 6c. Can be.

The static thermistor device can be configured as shown in FIG. That is, a projection 9c for supporting the heat collecting portion 5 of the heat sink 3 is formed on one of two opposing inner walls 6r of the case 6c, and a spring terminal R1 is formed on the other inner wall 6r. You may. In the static thermistor device configured as described above, the heat collecting portion 5, the tube T1, one end of the pair of feed terminals 1b, and the PTC element 2 are pressed together by the interaction between the projection 9c and the spring terminal R1. At this time, the heat collecting part 5 of the heat sink 3 is point-contacted or line-contacted by the protrusion 9c, and heat conduction from the heat collecting part 5 to the case 6c may be limited.

Hereinafter, the configuration of the static characteristic thermistor device according to the fourth embodiment of the present invention will be described with reference to FIGS. The same parts as those in the first to third embodiments are denoted by reference numerals, and descriptions of these parts are omitted.

In the static thermistor device according to the fourth embodiment, the PTC element 2 is sandwiched between two pairs of opposing ends of the pair of feed terminals 1b such that the front surfaces of both main surfaces 2a contact the feed terminals 1b. The PTC element 2 and the pair of feed terminals 1b are inserted into the insertion holes V2 formed in the block v1.

The block V1 is composed of an elastic insulator having good thermal conductivity such as silicone rubber, and the insertion hole V2 penetrates the block V1 to be opened on both opposite surfaces of the block V1 or only on one side of the block V1. have. The width F of the insertion hole V2 of the block V1 is smaller than the sum G of the thickness of the PTC element 2 and the thickness of the pair of feed terminals 1b. The PTC element 2 and the pair of feed terminals 1b are inserted into the insertion hole V2 by the elasticity of the block V1 so that the inner wall of the insertion hole V2, the PTC element 2 and the feed phase terminal 1b of the one phase are pressed together. In this way, the block V1 into which the PTC element 2 and the pair of feed terminals 1b are inserted is sandwiched between the pair of collectors 5 of the heat sink 3. The distance E between the pair of collecting portions 5 is smaller than the outline width H of the block V1. The block V1 is sandwiched between the pair of collectors 5 by its elasticity, so that the pair of collectors 5 and V1 are in close contact with each other, and the adhesion strength between the PTC element 2 and the pair of feed terminals 1b in the block V1 is close to each other. Increases.

The heat collecting part 5 of the block V1 and the heat sink 3 is accommodated in the case 6d. Case 6d is made of an insulator such as PPS. In FIG. 13, the cavity 8d opened upward is formed. The case 6d has an upper lid fitting section 6s above a pair of inner walls 6r formed near the inside of the Kabuki 8d, and a lower accomodation section 6t below the inner wall 6r. Moreover, a pair of recessed parts 6u are formed in the inner surface of the lead fixing part 6s, and a pair of slits 7d penetrating the storage part 6t are formed in one side surface 6v. When the heat sink 3 and the block V1 are accommodated in the case 6d thus configured, the opposite ends of the pair of feed terminals 1b protrude out of the cavity 8d, and the heat sink 3 of the heat sink 3 protrudes outward through the slit 7d. The pair of collecting portions 5 is inserted into the storage portion 6t through the slit 7d of the case 6d. The width I of the storage portion 6t of the case 6d is smaller than the sum J of the outer width H of the block V1 and the thickness of the pair of heat collecting portions 5 of the heat sink 3. The heat sink 3 and the block V1 are inserted into the accommodating portion 6t by using the elasticity of the block V1, while the pair of heat collecting parts 5 of the heat sink 3, the block V1 and the pair of feed terminals 1b, and the PTC element 2 are compressed to each other. .

In this way, the cavity 8d of the case 6d, which houses the members, is closed by the lid 11c. Lead 11c is made of PPS or the like and has a pair of lead-out slits 11d and a pair of projections 11e. The lead 11c is fitted to the lead fixing part 6s of the case 6d in a state of being mounted on the upper surface of the inner wall 6r, and closes the case 6d with the opposite ends of the pair of feed terminals 1b protruding from the lead-out slit 11d. The lead-out slit 11d is sealed with resin or the like (not shown). The depth K of the storage portion 6t of the case 6d is smaller than the height L of the block V1. The projection 11e of the lead 11c is fitted into the recessed portion 6u of the case 6d by the elasticity of the block V1 to coincide. In this way, the bottom of the block V1, the lid 11c, and the storage portion 6t are closely attached to each other without any gap. Therefore, it is possible to simply form a sealed structure around the PTC element 2 without encapsulating the contact portion between the case 6d and the lead 11c with resin or the like.

The order of assembling the component members is not limited to the above-described embodiment. For example, after storing the block V1 in which the PTC element 2 and the pair of feed terminals 1b are inserted into the case 6d, the pair of heat collecting portions 5 of the heat sink 3 can be inserted into the block V1 stored in the case 6d. .

The static characteristic thermistor device may be configured as shown in FIG.

That is, the PTC element 2 and the pair of feed terminals 1b pass through the opening of the insertion hole V2 in the horizontal direction in FIG. 15 and are inserted into the block V1, and the block V1 is inserted between the pair of heat collecting sections 5 of the heat sink 3. Insert. The heat sink 3 and the block V1 are stored in the case 6d, and the opposite ends of the pair of feed terminals 1b are projected out of the slit 10d formed on the side surface 6w of the case 6d. In the static characteristic thermistor device described above, the insertion hole V2 of the block V1 is configured to be continuously opened in the slit 7d and the slit 10d of the case 6d. Therefore, for example, when this apparatus is used for a liquid phase deodorizer, there is a risk that vaporized and dissipated pesticides and the like penetrate into the insertion hole V2 attached to the PTC element 2. In order to prevent such foreign matter from entering the insertion hole V2, the slit 7d and the slit 10d of the case 6d are sealed with a resin or the like (not shown). In the static thermistor device described above, the lead 11c does not have the lead-out slit 11d.

In the static thermistor device configured as described above, similarly to the static thermistor device in the fourth embodiment described above, the elasticity of the block V1 keeps the blocks V1, the case 6d, and the lead 11c in close contact with each other. The pair of collector portions 5, the block V1, the pair of feed terminals 1b and the PTC element 2 are also held in close contact with each other.

Hereinafter, the configuration of the static characteristic thermistor device according to the fifth embodiment of the present invention will be described with reference to FIGS. 16 to 18. The same parts as those in the first to fourth embodiments are denoted by the same reference numerals, and descriptions of these parts are omitted.

In the static characteristic thermistor device of the fifth embodiment, a pair of insertion slits V3 extending in a direction opposite to the insertion hole V2 is newly formed in the block V1, and the depth direction of each insertion slit V3 is in the depth direction of the insertion hole V2. Orthogonal about. Insertion slit V3 may be open on two opposite sides of block V1 or on either side of block V1. The pair of collecting portions 5 of the heat sink 3 are inserted into the insertion slit V3.

In another aspect, the present embodiment can be configured similarly to the fourth embodiment. The PTC element 2 is fitted to two pairs of opposing ends of the pair of feed terminals 1b such that the entire surface of the main surface 2a is in contact with the feed terminal 1b. The PTC element 2 and the feed terminal 1b are inserted into the insertion holes V2 formed in the block V1, the heat sink 3 and the block V1 are housed in the case 6d, and the cavity 8d of the case 6d is closed by the lead 11c. The lead slit 11d is sealed with a resin or the like (not shown).

In the static characteristic thermistor device of the fifth embodiment, since the pair of collection portions 5 of the heat sink 3 are inserted into the pair of insertion slits V3 of the block V1, heat is conducted through the five surfaces of the pair of collection portions 5. Therefore, the heat generated by the PTC element 2 can be extracted much more efficiently.

In addition, the static thermistor device can be configured as shown in FIG. That is, as in the fourth embodiment, a block V1 having an insertion hole V2 and an insertion slit V3 formed in parallel in the longitudinal direction of the block V1, and a case 6d having a pair of slits 10d facing the insertion slit V3 are provided. The terminal opposite to the end inserted into the insertion hole V2 of the pair of feed terminals 1b protrudes out of the slit 10d.

Hereinafter, the operation of the static thermistor devices according to the first to fifth embodiments of the present invention will be described with reference to FIG. In the first to fifth embodiments, the same members constituting the static characteristic thermistor device are denoted by the same negative hole, and descriptions of these parts are omitted.

The liquid level device 31 shown in FIG. 20 has a case 32 in which an insecticidal liquid bottle 34 filled with an insecticide 33 is housed. In the pesticide bottle 34, a liquid absorbing core 35 for raising the liquid by capillary action is formed so that one end thereof is immersed in the pesticide solution 33, and the other end thereof protrudes out of the pesticide bottle 34. In addition, the static characteristic thermistor device X1 according to any one of the first to fifth embodiments is housed in the case 32 in a state where the liquid absorbing core 35 is penetrated through the heat dissipating portion 4 of the heat sink 3.

In this way, in the static characteristic thermistor device X1 mounted on the liquid phase curler 31, a voltage is applied to the PTC element 2 through a pair of feed terminals 1a or 1b, and the PTC element 2 generates a constant-temperature heating operation. Fever). The heat generated in this way is conducted from the two main surfaces 2a of the PTC element 2 through the pair of feed terminals 1a or 1b and the insulating resin, the tube T1 or the block V1, to the pair of heat collecting parts 5 and the heat dissipating part 4 of the heat sink 3. . By the diffusion of heat from the heat dissipation unit 4, the liquid absorption core 35 penetrating the heat dissipation unit 4 is heated, and the pesticide liquid 33 penetrated into the liquid absorption core 35 is vaporized and dissipated.

In the static characteristics thermistor device according to the present invention described above, the shape of the PTC element 2 is disc-shaped, but the shape is not limited thereto. Even if it is available.

In addition, the heat conduction path is short, consisting of a PTC element 2-a pair of feed terminals 1b-an insulating resin or a tube T1 or a block V1-a heat sink 3. In addition, since both main surfaces 2a of the PTC element 2 are used as a heat radiating portion, heat generated in the PTC element 2 can be efficiently extracted. In addition, in the static thermistor apparatuses of the second to fifth embodiments, since the members are compressed and closely adhered to each other by the elasticity of the tubing T1 or the block V1, there is no air in the heat conduction path and the thermal efficiency is good. Do.

The static characteristics thermistor device according to the present invention described above can provide the following effects. First, the heat conduction path is short and consists of a PTC element-a feed terminal-an insulating resin or a tube or a block-heat dissipation part made of an insulator, and therefore, thermal efficiency is high. In addition, since the case that occupies most of the static thermistor device is not included in the heat conduction path, there is little risk of deformation or damage due to high temperature heating and the reliability of the device is excellent. In addition, since the material constituting the case does not need to be limited to a material having excellent heat resistance, the degree of freedom can be increased.

Since both main surfaces of the electrode of the PTC element are used as a heat radiating place, heat can be effectively extracted from the PTC element. Therefore, the Curie point of the PTC element to be used can be lowered, and the resisting temperature of the used material such as an insulating case or an insulating resin can be lowered. In addition, with the exception of the heat dissipation part, the surface temperature of the parts used can be reduced, and the reliability and safety can be improved.

In the case where the insulating resin is filled in the insulating case, since no air layer is present in the heat conduction path composed of the PTC element-feeding terminal-insulating resin-heat radiating portion, the thermal conductivity is almost unchanged. Therefore, it is possible to provide a static thermistor device having a small temperature nonuniformity in the heat dissipation portion during assembly. In this case, the side of the insulating case can be inclined to increase the width of the cavity toward the opening, so that the flow of resin to fill the insulating case can be uniformly maintained, so that no unfilled part (air layer) remains after the resin is sealed. It is possible to further increase the thermal conductivity to the heat radiating portion.

As a method of contacting the PTC element and the feeder terminal (pressing method), by using the elasticity of a spring terminal, a tub, or a block, it is possible to easily form a sealed structure without enclosing the periphery of the PTC element with a resin or the like. Therefore, there is less risk that resin or the like adheres to the PTC element to contaminate the PTC element or enters between the PTC element and the feed terminal and causes contact failure. As a result, it is possible to improve the reliability for safety or for the occurrence of sparks at the contact point. Moreover, the reliability of the contact surface between a PTC element and a feed terminal can be improved, without using an adhesive agent. In the structure, the PTC element and the feed terminal are brought into surface contact with each other after the PTC element and the feed terminal are inserted into the insulating case by the spring property of the holding portion formed on the feed terminal, so that the PTC element and the feed terminal are closely adhered to each other and the heat generation efficiency Can be increased even more.

In addition, by inserting the heat collecting portion of the heat sink into the block, heat is conducted through both surfaces of the heat collecting portion of the heat sink, and thus heat generated in the PTC element can be drawn more efficiently.

Claims (15)

A static thermistor element 2 sandwiched between a pair of feed terminals 1a; A heat sink 3 having a cylindrical heat dissipation part 4 and a pair of heat collecting parts 5; And a case, wherein the static characteristic thermistor element 2 described above is housed in a case 6a, which is disposed between a pair of heat collecting portions 5, and the case is filled with an insulating resin or an insulating rubber. And a pair of electrical feed terminals (1a) and a pair of electrical current collectors (5) are electrically insulated from each other. The static thermistor device according to claim 1, wherein the insulating resin or insulating rubber described above has a high thermal conductivity. 2. The electric power supply according to claim 1, wherein the pair of power feed terminals (1a) described above is a flat terminal structure; The static thermistor element (2) and the feed terminal (1a) described above are bonded to each other with a conductive adhesive material, so that they are in surface contact with each other. The static thermistor according to claim 1, wherein at least one side surface of the inside of the case (6a) described above is inclined so that the width of the cavity (8a) of the case becomes wider from the bottom toward the opening of the case. Device. A static thermistor element 2 sandwiched between a pair of feed terminals 1b; A heat sink 3 having a cylindrical heat dissipation part 4 and a pair of heat collecting parts 5, and a case 6b, wherein the static thermistor element 2 described above comprises a thermistor element 2 and a The pair of heat collecting parts 5 of the heat sinks 3 inserted between the heat collecting parts 5 of the heat sinks 3 together with the insulator T1 inserted between the heat parts 5 are connected to the case. The heat dissipation part (4) of the heat sink (3) which was accommodated in (6b) is installed in the case 6b exterior, The static electricity thermistor apparatus characterized by the above-mentioned. A static thermistor device as claimed in claim 5, wherein said insulator (T1) is made of an elastic body. 6. The device of claim 5, wherein the electrical insulator (T1) comprises a tube made of an elastic body. A static thermistor device as claimed in claim 5, wherein said insulator (T1) comprises a tube made of a heat shrinkable elastomer. 6. The electric power supply terminal (1b) according to claim 5, wherein each of the pair of electrical feed terminals (1b) has a spring-like member (1p) with respect to the contact portion with the electrical static thermistor element (2). 2) and the pair of feed terminals 1b and the insulator T1, which are electrical, are housed in the case 6b, which is the electrical. A static thermistor device characterized in that it is in surface contact with each other. The electrostatic static thermistor element 2, the pair of power feed terminals 1b, and the insulator T1 described above are inserted between the pair of electrical current collectors 5, respectively. And the positive pressure thermistor device characterized in that they are pressed against each other. The whole of the electrostatic static thermistor element 2, the electric power supply terminal 1b, and the electric insulator T1, as described in claim 10, which is a part inserted between the electric pair of electrical collectors 5 described above. The thickness is set to be larger than the distance between the pair of collectors 5 of the heat sink 3, so that the static thermistor element 2, the pair of feed terminals 1b, and the insulator (electric) A static thermistor device according to claim 1, wherein T1 is inserted between the pair of heat collecting parts 5 described above and pressed together. Static thermistor element 2; A pair of feed terminals 1b in which the above-described static characteristic thermistor elements 2 are sandwiched; A heat sink 3 having a heat dissipation unit 4 and a pair of heat collecting units 5 connected to the heat dissipation unit 4; Insulator T1; And a case 6c in which the foregoing electrostatic thermistor element 2 is housed, wherein the electrostatic static thermistor element 2 and the electrical feeding terminal 1b are inserted into the electrical insulator T1. The electrical insulator T1 is arranged between the pair of electrical collectors 5, and the elasticity between the pair of electrical collectors 5 and the inner wall 6r of the case 6c. At least one support member (R1) having a static characteristic thermistor device characterized in that the arrangement. 13. A static thermistor device as claimed in claim 12, wherein said supporting member (R1) comprises a spring terminal. A static thermistor element 2; A pair of feed terminals 1b having the foregoing static element 2 sandwiched therebetween; A heat sink 3 having a heat dissipation unit 4 and a pair of heat collecting units 5 connected to the heat dissipation unit 4; And a case 6d in which the foregoing electrostatic thermistor element 2 is housed, wherein the electrostatic thermistor element 2 and the electrical feeding terminal 1b are made of an insulator having elasticity ( The block V1 inserted into and electrically inserted into V1 is disposed between the pair of collectors 5 of the heat sinks 3, and the pair of collectors 5 of the heat sinks 3 are connected to the case ( The heat dissipation part (4) of the heat sink (3) stored in 6d) protrudes out of the case (6d). A static thermistor element 2; A pair of feed terminals 1b having the above-mentioned static thermistor element 2 sandwiched therebetween; A heat sink 3 having a heat dissipation unit 4 and a pair of heat collecting units 5 connected to the heat dissipation unit; And a case 6d in which the foregoing static characteristic thermistor element 2 is housed, and a pair of homes of the foregoing static characteristic thermistor element 2, the electrical feed terminal 1b, and the electrical heat sink 3 are housed. The thermal part 5 is inserted into a block V1 made of an insulator having elasticity, and the electric block is housed in the electric case 6d.