CN1088902C - Thermistor of positive temp. coefficient - Google Patents
Thermistor of positive temp. coefficient Download PDFInfo
- Publication number
- CN1088902C CN1088902C CN96109302A CN96109302A CN1088902C CN 1088902 C CN1088902 C CN 1088902C CN 96109302 A CN96109302 A CN 96109302A CN 96109302 A CN96109302 A CN 96109302A CN 1088902 C CN1088902 C CN 1088902C
- Authority
- CN
- China
- Prior art keywords
- power supply
- temperature coefficient
- positive temperature
- mentioned
- supply terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005855 radiation Effects 0.000 claims abstract 4
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 12
- 206010039509 Scab Diseases 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 7
- 230000000749 insecticidal effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- -1 (stainless steels) Chemical class 0.000 description 2
- 241000255925 Diptera Species 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermistors And Varistors (AREA)
- Catching Or Destruction (AREA)
- Details Of Resistors (AREA)
Abstract
一种正温度系数热敏装置使用容易加工的正温度系数热敏元件，它产生的热能有效地传递给放热筒。该装置由具有大致呈U形的开口部及凹部的外壳、平板状的正温度系数热敏元件、一对供电端子、放热筒及盖体构成，放热筒配置在U形开口部的内侧，一对供电端子由在一边的具有近似平板部的供电端子和在另一边的具有弹性接触部的供电端子构成，一边的供电端子、正温度系数热敏元件及另一边的供电端子被安放在外壳的凹部，正温度系数热敏元件的电极和一对供电端子分别导通，同时一对供电端子的引出部从外壳的凹部的侧部引出，利用盖体封盖外壳的凹部开口面。
A PTC thermistor uses an easily processable PTC thermistor, which generates thermal energy that is efficiently transferred to the exothermic cylinder. The device is composed of a casing with a substantially U-shaped opening and a recess, a flat plate-shaped positive temperature coefficient thermal element, a pair of power supply terminals, a heat radiation cylinder and a cover, and the heat radiation cylinder is arranged inside the U-shaped opening. A pair of power supply terminals is composed of a power supply terminal with an approximate flat part on one side and a power supply terminal with an elastic contact part on the other side. The power supply terminal on one side, the positive temperature coefficient thermal element and the power supply terminal on the other side are placed on the The concave part of the housing, the electrode of the positive temperature coefficient thermal element and the pair of power supply terminals are respectively conducted, and the lead-out parts of the pair of power supply terminals are drawn out from the side of the concave part of the housing, and the opening surface of the concave part of the housing is covered by the cover.
Description
The present invention relates to the positive temperature coefficient heat-sensing device used in disinsector, the fragrance boxs etc. such as liquid formula electronic mosquito killer, relate in particular to heat transfer efficiency height and positive temperature coefficient heat-sensing device easy to manufacture.
In recent years, in the heater field, use the positive temperature coefficient temperature-sensitive element mostly.This is determined that by following characteristics promptly the positive temperature coefficient temperature-sensitive element has temp autocontrolled function, can obtain no control circuit and safe positive temperature coefficient heat-sensing device.
The structure of existing this positive temperature coefficient heat-sensing device is described simply according to Fig. 3.
The positive temperature coefficient heat-sensing device is made of the positive temperature coefficient temperature-sensitive element 4 and a pair of power supply terminal 5,6 of lid 2, grommet 3, cylindrical circular surface thereon and the following table surface forming electrode of the upside open surfaces of insulation crust 1, capping insulation crust 1, above-mentioned insulation crust 1 be by inner core 1a, urceolus 1b, and base plate 1c integrally formed.
And, the a pair of annular electric supply terminal 5,6 that shape is roughly the same is connected the assembly that the back constitutes and is seated between the inner core 1a and urceolus 1b of insulation crust 1 with the upper and lower surface conducting of positive temperature coefficient temperature-sensitive element 4, and with the space between insulating resin 7 filling insulation crusts 1 and the assembly.In addition, the lid 2 that is made of insulating resin is entrenched on the upside open surfaces of insulation crust 1, and 3 is fixed into an integral body by tightening up ring, at inner core 1a with tighten up between the ring 3 air layer 8 that is formed by the gap is arranged.
, in the positive temperature coefficient heat-sensing device that constitutes like this, there is following problem.
Since positive temperature coefficient temperature-sensitive element 4 be shaped as cylindrical shape, so be shaped and the sintering difficulty, in addition, bend easily etc., back processing such as must grind.
From the bang path of the heat sent of positive temperature coefficient temperature-sensitive element 4 of heating by insulating resin 7, insulation crust 1, air layer 8 and tighten up ring 3 and constitute, long to the heat transfer path that tightens up ring 3 from positive temperature coefficient temperature-sensitive element 4, the heat efficiency is low.
Therefore 3. the heat of sending from positive temperature coefficient temperature-sensitive element 4 is passed to whole insulation crust 1 by insulating resin 7, and passing to that the heat that tightens up ring 3 compares with gross calorific power is seldom.
Purpose of the present invention is exactly that a kind of like this positive temperature coefficient heat-sensing device is provided in order to address the above problem, and it uses the positive temperature coefficient temperature-sensitive element of processing easily, and the heat energy that this positive temperature coefficient temperature-sensitive element produces passes to the heat release tube enough effectively.
In order to achieve the above object, positive temperature coefficient heat-sensing device of the present invention is characterised in that, it is by the shell of the recess that has the peristome that roughly takes the shape of the letter U and form near this peristome, on its two interarea, form the flat positive temperature coefficient temperature-sensitive element of electrode, a pair of power supply terminal, heat release tube and lid constitute, above-mentioned heat release tube is configured in the inboard of U-shaped peristome, above-mentioned a pair of power supply terminal is by on one side the power supply terminal with approximate flat part with constitute at the power supply terminal with elastic contact part of another side, the power supply terminal on above-mentioned one side, the power supply terminal of above-mentioned positive temperature coefficient temperature-sensitive element and above-mentioned another side is placed in the recess of above-mentioned shell, electrode on two interareas of above-mentioned positive temperature coefficient temperature-sensitive element and the conducting respectively of above-mentioned a pair of power supply terminal, the lead division of above-mentioned a pair of power supply terminal is drawn from the sidepiece of the recess of above-mentioned shell simultaneously, utilizes the recess opening surface of the above-mentioned shell of above-mentioned lid capping.
Another feature is, flat part and partition the above-mentioned peristome that roughly take the shape of the letter U and above-mentioned recess between or the bottom surface of above-mentioned recess of above-mentioned positive temperature coefficient temperature-sensitive element by the power supply terminal on above-mentioned one side is surface contact state.
Another feature is, above-mentioned lid is made of the low resin of conductive coefficient, and have and the corresponding rounded through hole of the peristome that roughly takes the shape of the letter U of above-mentioned shell, in the through hole that above-mentioned heat release tube is inserted the peristome that roughly takes the shape of the letter U that is fixed on above-mentioned shell and above-mentioned lid, thereby above-mentioned lid just is fixed on the above-mentioned shell.
Therefore, owing to heat transfer path is made of power supply terminal, insulation crust and heat release tube, so can effectively utilize the heat that the positive temperature coefficient temperature-sensitive element sends.In addition, except peristome one side that roughly takes the shape of the letter U, between positive temperature coefficient temperature-sensitive element and insulation crust, be provided with the bad air layer of heat conduction, can prevent useless thermal diffusion.
Fig. 1 is the exploded perspective view of the positive temperature coefficient heat-sensing device of an example of the present invention;
Fig. 2 is the exploded perspective view of the positive temperature coefficient heat-sensing device of another example of the present invention;
Fig. 3 is the sectional drawing of conventional example.
Describe an example of the present invention in detail according to Fig. 1.But the middle cover 20 among Fig. 1 will be explained below.
The positive temperature coefficient heat-sensing device is made of shell 11, lid 12, heat release tube 13, the flat positive temperature coefficient temperature-sensitive element 14 that forms electrode 14a, 14b on two interareas and a pair of power supply terminal 15,16.
A pair of power supply terminal 15,16 is made of the power supply terminal 15 on one side and the power supply terminal 16 of another side.Power supply terminal 15 on one side is the terminals that are made of SUS metals such as (stainless steels), it has been by at one end having formed the flat part 15a that contacts with the electrode 14a of positive temperature coefficient temperature-sensitive element 14 and having constituted at the lead division 15b that the other end forms, and is provided with the narrow width part 15c that forms by along the horizontal otch of lead division 15b or grooving etc. between flat part 15a and lead division 15b.The power supply terminal 16 of another side is the terminal that is made of metals such as rubber-like SUS or phosphor bronzes, and it is made of with the elastic contact part 16a of electrode 14b Elastic Contact positive temperature coefficient temperature-sensitive element 14 with at the lead division 16b that the other end forms that at one end form.
The positive temperature coefficient heat-sensing device is to constitute like this, promptly the power supply terminal 16 that begins to make in order power supply terminal 15 on one side, positive temperature coefficient temperature-sensitive element 14, another side from partition 11a one side is packed into behind the recess 18 with electrode 14a, the 14b conducting of positive temperature coefficient temperature-sensitive element 14 respectively, cover the opening surface of recess 18 with lid 12, almost seamlessly insert the peristome 17 that roughly takes the shape of the letter U from the below of shell 11 with heat release tube 13 with respect to its inwall, will with the upper end ca(u)lk of the heat release tube 13 of the relative side of bead 13a side.With stable on heating silicon series bonding agent shell 11 and lid 12 are glued together then.At this moment, utilize the direction of narrow width part 15c of the power supply terminal 16 sidewise power supply terminals 15 of the teats 19 restriction positive temperature coefficient temperature-sensitive elements 14 be located in the recess 18 and another side to move, keep state of insulation with the narrow width part 15c of power supply terminal 15 on one side.In addition, lead division 15b, the 16b of a pair of power supply terminal 15,16 laterally draws from the sidewall edge of recess 18 by otch 11b, 11c on the shell 11.In addition, the narrow width part 15c on the power supply terminal 15 that is located on one side from flat part 15a bending, is configured in and the discontiguous position of the inner wall surface of recess 18.
This positive temperature coefficient heat-sensing device passes through to a pair of power supply terminal 15,16 power supplies, the heating of positive temperature coefficient temperature-sensitive element 14 constant temperature, and its heat conducts to heat release tube 13 from shell 11 by the flat part 15a of power supply terminal 15 on one side and the partition 11a of shell 11.At this moment, the electrode 14a of the interarea of positive temperature coefficient temperature-sensitive element 14 is surface contact state by the partition 11a of flat part 15a and shell 11, effectively heat is passed to shell 11.Therefore, conduct effectively to heat release tube 13 from the heat that positive temperature coefficient temperature-sensitive element 14 sends, the while is owing to the good heat conductivity of heat release tube 13, so the uniformity of temperature profile of heat release tube 13.
In addition, heat release tube 13 have the core (not shown) of having soaked into insecticidal solution inserted its inner space after, utilize the heat heating insecticidal solution of heat release tube 13, make the function of insecticidal solution from the core evaporation.
Secondly, describe another example of the present invention in detail with reference to Fig. 2.But with the identical part of above-mentioned a kind of example, be marked with identical symbol, detailed description is omitted.
The positive temperature coefficient heat-sensing device is made of shell 21, lid 12, heat release tube 13, positive temperature coefficient temperature-sensitive element 14 and a pair of power supply terminal 25,26.
Shell 21 is made of insulating ceramics materials such as for example aluminium oxide, forms the peristome 27 that can cross section 13 crimping of heat release tube are chimeric or that insert roughly takes the shape of the letter U on this shell and makes spaced walls 21a can lay the recess 28 of positive temperature coefficient temperature-sensitive element 14 and a pair of power supply terminal 25,26 between the centre near this peristome 27.On the sidewall of this recess 28, be provided with the protuberance 29 that moves that is used for limiting positive temperature coefficient temperature-sensitive element 14 and power supply terminal 25 on one side.On the peristome 27 that roughly takes the shape of the letter U, form and prevent protruding 27a, the 27a that heat release tube 13 is pulled out.In addition, on the side wall portion of shell 21, form otch 21b, the 21c of lead division 25b, the 26b that can insert a pair of power supply terminal 25,26.
A pair of power supply terminal 25,26 is made of the power supply terminal 25 on one side and the power supply terminal 26 of another side.Power supply terminal 25 on one side is the terminals that are made of SUS metals such as (stainless steels), it has been by at one end having formed the flat part 25a that contacts with the electrode 14a of positive temperature coefficient temperature-sensitive element 14 and the lead division 25b that draws at the sidepiece at shell 11 that the other end forms constitutes, and is provided with the narrow width part 25c that forms by along the horizontal otch of lead division 25b or grooving etc. between flat part 25a and lead division 25b.The power supply terminal 26 of another side is the terminal that is made of metals such as rubber-like SUS or phosphor bronzes, and it is made of with the elastic contact part 26a of electrode 14b Elastic Contact positive temperature coefficient temperature-sensitive element 14 with at the lead division 26b that the other end forms that form at the other end.
The positive temperature coefficient heat-sensing device is to constitute like this, promptly the power supply terminal 26 that begins to make in order power supply terminal 25 on one side, positive temperature coefficient temperature-sensitive element 14, another side from bottom surface 21e is packed into behind the recess 28 with electrode 14a, the 14b conducting of positive temperature coefficient temperature-sensitive element 14 respectively, cover the opening surface of recess 28 with lid 12, almost seamlessly insert the peristome 27 that roughly takes the shape of the letter U from the below of shell 21 with heat release tube 13 with respect to its inwall, will with the upper end ca(u)lk of the heat release tube 13 of the relative side of bead 13a side.With stable on heating silicon series bonding agent shell 21 and lid 12 are glued together then.At this moment, utilize the direction of narrow width part 25c of the power supply terminal 26 sidewise power supply terminals 25 of the teats 29 restriction positive temperature coefficient temperature-sensitive elements 14 be located in the recess 28 and another side to move, keep state of insulation with the narrow width part 25c of power supply terminal 25 on one side.In addition, lead division 25b, the 26b of a pair of power supply terminal 25,26 laterally draws from the sidewall edge of recess 28 by otch 21b, 21c on the shell 21.In addition, the narrow width part 25c on the power supply terminal 25 that is located on one side from flat part 25a bending, is configured in and the discontiguous position of the inner wall surface of recess 28.
This positive temperature coefficient heat-sensing device is by powering to a pair of power supply terminal 25,26, the heating of positive temperature coefficient temperature-sensitive element 14 constant temperature, the flat part 25a of the power supply terminal 25 of its heat by on one side and the bottom surface 21e and the next door 21a of shell 11, from the peristome that roughly takes the shape of the letter U 27 of shell 21 to 13 conduction of heat release tube.At this moment, the electrode 14a of the interarea of positive temperature coefficient temperature-sensitive element 14 contacts with the bottom surface 21e of shell 21 by flat part 25a, effectively heat is passed to shell 11.Therefore, conduct effectively to heat release tube 13 from the heat that positive temperature coefficient temperature-sensitive element 14 sends, the while is owing to the good heat conductivity of heat release tube 13, so the uniformity of temperature profile of heat release tube 13.
Positive temperature coefficient heat-sensing device of the present invention flows through under the situation of overcurrent in positive temperature coefficient temperature-sensitive element 14, thereby has the fuse function that can make narrow width part 15c, the 25c fusing blocking-up that is located on the power supply terminal 15,25 on one side flow through the electric current of positive temperature coefficient thermal controls apparatus.In addition, though narrow width part 15c, 25c are located on the power supply terminal 15,25 on one side, also can be located on the power supply terminal 16,26 of another side.
Owing to the recess 18,28 of shell 11,21 is sealed simply, so can protect the contact portion of positive temperature coefficient temperature-sensitive element 14 and a pair of power supply terminal 15,16 or a pair of power supply terminal 25,26 to avoid for example obstacle that causes of the steam etc. of insecticidal solution of harmful substance with lid 12.
In addition, utilize clamping plate or be located at opening 12c on the platform 12b, the platform 12b itself that usefulness will be installed with screw etc. is fixing, can easily the positive temperature coefficient thermal controls apparatus be fixed on the liquid formula electronic mosquito killer body etc.
As shown in Figure 1, between the shell 11,21 of above-mentioned example and lid 12, noninflammability insulators such as mica are housed, so preferably dispose the middle cover 20 of opening surface of the recess 18 of closure shell 11,21.At this moment, the shell 11,21 of noninflammability insulant and middle cover 20 be enclosed in positive temperature coefficient temperature-sensitive element 14 around, so no matter the material of lid 12 how, can both increase thermal endurance.
As the material of shell 11,21 is to be that example is illustrated with insulators such as potteries, but if purity bigger with conductive coefficient and that be suitable for powder forming just constitutes better at the aluminium oxide ceramics 75% or more.
In addition, be preferably between the bottom surface 21e of the partition 11a of positive temperature coefficient temperature-sensitive element 14, flat part 15a, 25a, shell 11 or shell 21 coating silicone grease etc.At this moment, air layer small between each parts is filled by silicone grease, and thermal conductivity can be better.
As mentioned above, positive temperature coefficient thermal controls apparatus of the present invention is not limited by above-mentioned example, can carry out various distortion in the scope of its purport.
As mentioned above, positive temperature coefficient heat-sensing device of the present invention has following effect.
1. because being shaped as of positive temperature coefficient temperature-sensitive element 14 is plate shaped, thus be shaped and sintering easy, in addition, be difficult for bending etc., back processing such as do not need to grind.
2. the bang path from the heat sent of positive temperature coefficient temperature-sensitive element 14 of heating is made of flat terminal, insulation crust, heat release tube, and the heat transfer path from the positive temperature coefficient temperature-sensitive element to the heat release tube is short, and by air layer, so heat efficiency height.
3. except peristome one side that roughly takes the shape of the letter U, between positive temperature coefficient temperature-sensitive element and insulation crust, be provided with the bad air layer of heat conduction, can prevent useless thermal diffusion.
4. because peristome that takes the shape of the letter U and through hole overlap, after being inserted, can easily and securely shell and lid be fixed by the heat release tube.In addition, owing to constitute lid with the bad resin of thermal conductivity, thus do not pass to lid from positive temperature coefficient temperature-sensitive element biography basically to the heat of shell, and can pass to shell effectively.
Claims (3)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7201151A JPH0950902A (en) | 1995-08-07 | 1995-08-07 | Positive temperature characteristic thermistor device |
| JP201151/95 | 1995-08-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1148164A CN1148164A (en) | 1997-04-23 |
| CN1088902C true CN1088902C (en) | 2002-08-07 |
Family
ID=16436239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96109302A Expired - Fee Related CN1088902C (en) | 1995-08-07 | 1996-08-07 | Thermistor of positive temp. coefficient |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH0950902A (en) |
| KR (1) | KR100245793B1 (en) |
| CN (1) | CN1088902C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4425916B2 (en) | 2004-03-12 | 2010-03-03 | 三菱電機株式会社 | Terminal box |
| KR100824697B1 (en) * | 2006-09-28 | 2008-04-24 | 세광테크놀러지 (주) | Heat dissipation device using thermistor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0631684Y2 (en) * | 1987-01-17 | 1994-08-22 | ティーディーケイ株式会社 | Positive characteristic thermistor device |
-
1995
- 1995-08-07 JP JP7201151A patent/JPH0950902A/en active Pending
-
1996
- 1996-08-07 KR KR1019960032905A patent/KR100245793B1/en not_active Expired - Fee Related
- 1996-08-07 CN CN96109302A patent/CN1088902C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1148164A (en) | 1997-04-23 |
| KR970012802A (en) | 1997-03-29 |
| KR100245793B1 (en) | 2000-03-02 |
| JPH0950902A (en) | 1997-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2698318B2 (en) | heater | |
| EP0443618B1 (en) | Method for producing a PTC thermistor | |
| KR880012149A (en) | Positive temperature coefficient (PTC) heating device | |
| CN1088902C (en) | Thermistor of positive temp. coefficient | |
| CN1052805C (en) | Positive temperature coefficient thermosensitive resistor device | |
| JPH06275370A (en) | Heating tool and manufacturing method thereof | |
| JP2590766Y2 (en) | Planar heater | |
| JP3219722U (en) | heater | |
| KR100498750B1 (en) | PTC Heater and Heat Sink Structure for Electronic Products | |
| JP3077518B2 (en) | Positive characteristic thermistor device | |
| JPH07153554A (en) | Heating device | |
| JPH051195U (en) | Electric heating device | |
| JP2898519B2 (en) | Anti-fog mirror | |
| JPH06188103A (en) | Ptc heating element | |
| KR0143941B1 (en) | Static thermistor device | |
| JP2612405B2 (en) | Anti-fog mirror | |
| JPH0621190U (en) | Waterproof heater | |
| JP2578593Y2 (en) | Heating equipment | |
| JP2002008903A (en) | Positive thermistor assembly and heating device | |
| JP3078474B2 (en) | Anti-fog mirror | |
| JPS6135345Y2 (en) | ||
| JPH0619625U (en) | Anti-fog mirror | |
| JPH06275367A (en) | Heating tool and its manufacturing method, and anti-fog mirror provided with the heating tool | |
| JPS646515Y2 (en) | ||
| JP2015215955A (en) | heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |