JPH04148501A - Air flow controlling resistor for fan - Google Patents
Air flow controlling resistor for fanInfo
- Publication number
- JPH04148501A JPH04148501A JP27430990A JP27430990A JPH04148501A JP H04148501 A JPH04148501 A JP H04148501A JP 27430990 A JP27430990 A JP 27430990A JP 27430990 A JP27430990 A JP 27430990A JP H04148501 A JPH04148501 A JP H04148501A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- resistor
- ptc
- electrode
- ptc devices
- 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.)
- Granted
Links
- 239000000758 substrate Substances 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 abstract description 8
- 238000009423 ventilation Methods 0.000 abstract description 8
- 230000005856 abnormality Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910001120 nichrome Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
- B60H1/00828—Ventilators, e.g. speed control
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Resistors (AREA)
- Thermistors And Varistors (AREA)
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は送風機の風量制御用抵抗器に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a resistor for controlling the air volume of a blower.
［従来の技術］
車両用空気調和装置では、送風機の吐出風量を段階的に
制御するために、ファンモータの電気回路にニクロム線
を用いた抵抗器を使用するが、モータロックなどの異常
時には、ニクロム線の赤熱に伴う火災の危険性がある。[Prior Art] In a vehicle air conditioner, a resistor using nichrome wire is used in the electric circuit of the fan motor to control the discharge air volume of the blower in stages, but in the event of an abnormality such as a motor lock, There is a risk of fire due to the red heat of the nichrome wire.
そこで、通常時にはファンモータの回転数を制御するた
めの抵抗体として働き、モータロックなどの異常時には
、過大電流を流さない安全装置としての働きをするＰＴ
Ｃ素子を用いた抵抗器がある。Therefore, under normal conditions, the PT acts as a resistor to control the rotation speed of the fan motor, and in the event of an abnormality such as a motor lock, it acts as a safety device to prevent excessive current from flowing.
There is a resistor using a C element.
このＰＴＣ素子を使用した抵抗器の一例を第４図に示す
。An example of a resistor using this PTC element is shown in FIG.
この抵抗器１００は、ＰＴＣ素子１０１と電極１０２お
よび基板１０３から成り、並列に配置された各ＰＴＣ素
子１０１の両側に、放熱板を兼ねた電極１０２が配置さ
れて、第４図に示すように、直立した状態で基板１０３
に固定されている。基板１０３は、ＰＴＣ素子１０１の
冷却を行うために、送風経路内に設置されている。This resistor 100 consists of a PTC element 101, an electrode 102, and a substrate 103. Electrodes 102, which also serve as heat sinks, are arranged on both sides of each PTC element 101 arranged in parallel, as shown in FIG. , the substrate 103 in an upright position
is fixed. The substrate 103 is installed within the ventilation path in order to cool the PTC element 101.
［発明が解決しようとする課題〕
しかるに、上記した従来の抵抗器は、ＰＴＣ素子と電極
とが交互に積層された状態で基板に固定されているため
、両外側に配置された電極間の―（抵抗器の厚み）が大
きくなる。[Problems to be Solved by the Invention] However, in the conventional resistor described above, the PTC elements and electrodes are fixed to the substrate in a state in which they are stacked alternately. (thickness of the resistor) increases.
従って、この抵抗器を送風経路内に設置した博合には、
風の流れが大きく阻害されて、風量低下や騒音上昇など
の不具合が生じる。また、ＰＴＣ素子と放熱板を兼ねた
電極とを交互に積層することで、中央部に位置するＰＴ
Ｃ素子の冷却が悪くなるという課題を有していた。Therefore, when this resistor is installed in the ventilation path,
The flow of air is greatly obstructed, causing problems such as a decrease in air volume and an increase in noise. In addition, by alternately stacking PTC elements and electrodes that also serve as heat sinks, it is possible to
There was a problem in that the cooling of the C element deteriorated.
本発明は上記事情に基づいてなされたもので、その目的
は、通風抵抗を小さくして、風量の低下や騒音の上昇を
低く抑えるとともに、冷却性能を向上させた送風機の風
量制御用抵抗器を提供することにある。The present invention was made based on the above-mentioned circumstances, and its purpose is to provide a resistor for controlling the air volume of an air blower, which reduces ventilation resistance, suppresses a decrease in air volume and an increase in noise, and improves cooling performance. It is about providing.
［課題を解決するための手段］
本発明は上記目的を達成するために、複数のＰＴＣ素子
と、設定風量に応じて前記各ＰＴＣ素子に通電するため
の電極とから成る送風機の風量制御用抵抗器において、
前記各ＰＴＣ素子を送風空気の流れに沿って直列に配置
するとともに、その各ＰＴＣ素子を前記電極で両側から
挟み込んだ三層構造とし、且つ、前記電極の両外側を送
風空気が流れるように設置したことを技術的手段とする
。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a resistor for controlling the air volume of an air blower, which comprises a plurality of PTC elements and an electrode for energizing each of the PTC elements according to a set air volume. In the device, the PTC elements are arranged in series along the flow of the blown air, and each PTC element is sandwiched between the electrodes from both sides to form a three-layer structure, and the blown air flows on both sides of the electrodes. The technical means is that it was installed in this way.
［作用および発明の効果］
上記構成上りなる本発明は、各ＰＴＣ素子が風の流れに
沿って直列に配置されることから、ＰＴＣ素子を並列に
配置した従来の抵抗器と比較して、抵抗器の厚さを薄く
することができる。[Operations and Effects of the Invention] In the present invention having the above-mentioned configuration, since each PTC element is arranged in series along the flow of the wind, the resistance is lower than that of a conventional resistor in which PTC elements are arranged in parallel. The thickness of the container can be made thinner.
従って、本発明の抵抗器を送風経路内に設置した場合に
、従来より通風抵抗を小さくすることができるため、風
量の低下や騒音の上昇を低く抑えることができる。Therefore, when the resistor of the present invention is installed in a ventilation path, the ventilation resistance can be made smaller than that of the conventional resistor, so that a decrease in air volume and an increase in noise can be suppressed.
また、本発明の抵抗器は、ＰＴＣ素子の両側に配された
電極の両外側に送風空気が流れるように設置されるため
、電極全体が放熱板として機能し、各ＰＴＣ素子を効果
的に冷却することができる。Furthermore, since the resistor of the present invention is installed so that the blown air flows to both sides of the electrodes arranged on both sides of the PTC element, the entire electrode functions as a heat sink, effectively cooling each PTC element. can do.
そのうえ、各ＰＴＣ素子が直列に配置されているため、
従来のように、中央部に位置するＰ ＴＣ素子の冷却が
悪くなるという問題点を解消して、各ＰＴＣ素子を一様
に冷却することができる。Moreover, since each PTC element is arranged in series,
The conventional problem of poor cooling of the PTC element located in the center can be solved, and each PTC element can be uniformly cooled.
［実施例］
次に、本発明の送風機の風量制御用抵抗器（以下抵抗器
と略す）を図面に示す一実施例に基づき説明する。[Example] Next, an air volume control resistor (hereinafter abbreviated as resistor) for an air blower according to the present invention will be described based on an example shown in the drawings.
第１図は抵抗器の斜視図、第２図は第１図の分解斜視図
、第３図は抵抗器の断面図である。FIG. 1 is a perspective view of the resistor, FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is a sectional view of the resistor.
本実施例の抵抗器１は、３個のＰＴＣ素子２〜４と、各
ＰＴＣ素子２〜４の放熱板を兼ねた４枚の電極５〜８、
および樹脂製の基板９から成り、送風機（図示しない）
の風量制御を行うため、ファンモータの電気回路に組み
込まれている。The resistor 1 of this embodiment includes three PTC elements 2 to 4, four electrodes 5 to 8 that also serve as heat sinks for each PTC element 2 to 4,
and a resin board 9, and a blower (not shown).
It is incorporated into the electric circuit of the fan motor to control the air volume.
各ＰＴＣ素子２〜４は、ファンモータへ流れる電流を制
御するための抵抗体で、モータロックなどの異常時には
、過大電流を流さない安全装置として機能する。Each of the PTC elements 2 to 4 is a resistor for controlling the current flowing to the fan motor, and functions as a safety device to prevent excessive current from flowing in the event of an abnormality such as a motor lock.
各電極５〜８は、電気抵抗が小さく、熱伝導性に優れた
材質（例えばｗ４）により平板状に形成され、その一部
に、基板９への取り付は足を兼ねた端子５ａ〜８ａが設
けられている。Each of the electrodes 5 to 8 is formed into a flat plate shape using a material (for example, W4) with low electrical resistance and excellent thermal conductivity, and terminals 5a to 8a, which also serve as legs, are attached to a part of the electrodes 5 to 8, and are attached to the substrate 9. is provided.
基板９は、各ＰＴＣ素子２〜４および各電極５〜８を保
持して、送風経路の上流側（送風機の近傍）に設置され
る。The substrate 9 holds each of the PTC elements 2 to 4 and each of the electrodes 5 to 8, and is installed on the upstream side of the air blowing path (near the blower).
各ＰＴＣ素子２〜４と各電極５〜８とは、第３図にも示
すように、所定の間隔を開けて横一列に配置された各Ｐ
ＴＣ素子２〜４の両面に、電極５．６および電極７．８
が接着剤などにより貼り合わされている。As shown in FIG.
An electrode 5.6 and an electrode 7.8 are provided on both sides of the TC elements 2 to 4.
are pasted together with adhesive or the like.
具体的には、ＰＴＣ素子２の一方の面（第１図上面〉に
電極５が接続され、ＰＴＣ素子３．４の一方の面に、両
方のＰＴＣ素子３．４にまたがって電極６が接続されて
いる。Specifically, an electrode 5 is connected to one surface of the PTC element 2 (top surface in FIG. 1), and an electrode 6 is connected to one surface of the PTC element 3.4, spanning both PTC elements 3.4. has been done.
また、ＰＴＣ素子２．３の他方の面に、両方のＰＴＣ素
子２．３にまたがって電極７が接続され、ＰＴＣ素子４
の他方の面に電極８が接続されている。Further, an electrode 7 is connected to the other surface of the PTC element 2.3, spanning both PTC elements 2.3, and the PTC element 4
An electrode 8 is connected to the other surface.
そして、多電［ｉ５〜８の各端子５８〜８ａが、基板９
の四隅に設けられた取付穴９ａ（第２図参照）に差し込
まれて、第１図に示すように、基板９と電極７．８との
間に所定の間隔を設けた状態で基板９に固定されている
。Then, the terminals 58 to 8a of the multiple terminals [i5 to 8] are connected to the board 9
is inserted into the mounting holes 9a (see Fig. 2) provided at the four corners of the board 9, with a predetermined distance provided between the board 9 and the electrodes 7.8, as shown in Fig. 1. Fixed.
この抵抗器１は、電極５がプラス側電極、電極７が中速
用電極、電極６が中低速用電極、電極８が低速用電極を
成し、端子５ａから流入した電流が、図示しないスイッ
チの切り換えにより、端子６８〜８ａのいずれかより流
出して、ファンモータの回転数を制御する。例えば、中
速時には、端子５ａから流入した電流が、ＰＴＣ素子２
を通って端子７ａより流出し、中低速時には、端子５ａ
から流入した電流が、ＰＴＣ素子２．３を通って端子６
ａより流出し、低速時には、端子５ａから流入した電流
が、ＰＴＣ素子２〜４を通って端子８ａより流出して各
電気回路を構成する。In this resistor 1, the electrode 5 is a positive side electrode, the electrode 7 is a medium speed electrode, the electrode 6 is a medium and low speed electrode, and the electrode 8 is a low speed electrode. By switching, the air flows out from one of the terminals 68 to 8a and controls the rotation speed of the fan motor. For example, at medium speed, the current flowing from the terminal 5a flows into the PTC element 2.
It flows out from terminal 7a through the terminal 5a during medium and low speeds.
The current flowing from the PTC element 2.3 passes through the terminal 6.
When the speed is low, the current flowing from the terminal 5a passes through the PTC elements 2 to 4 and flows out from the terminal 8a, forming each electric circuit.
上記のように構成された抵抗器１は、電極５〜８で挟ま
れた各ＰＴＣ素子２〜４が、送風空気の流れ（第１図矢
印で示す）に沿って直列に位置するように設置される。The resistor 1 configured as described above is installed so that the PTC elements 2 to 4 sandwiched between the electrodes 5 to 8 are positioned in series along the flow of the blown air (indicated by arrows in Figure 1). be done.
次に、本実施例の効果を説明する。Next, the effects of this embodiment will be explained.
本実施例の抵抗器１は、３個のＰＴＣ素子２〜４を横一
列に配置し、その各ＰＴＣ素子２〜４の両側に電極５〜
８を配置した三層構造を成し、且つ、各ＰＴＣ素子２〜
４が送風空気の流れに対して直列に位置するように設置
されるため、ＰＴＣ素子を並列に配置した従来の抵抗器
と比教して、抵抗器１の厚さを薄くすることができる。The resistor 1 of this embodiment has three PTC elements 2 to 4 arranged horizontally in a row, and electrodes 5 to 4 on both sides of each PTC element 2 to 4.
8 is arranged, and each PTC element 2 to
Since resistor 4 is installed in series with the flow of blown air, the thickness of resistor 1 can be made thinner, compared to a conventional resistor in which PTC elements are arranged in parallel.
その結果、従来より通風抵抗が小さくなり、風量低下お
よび騒音上昇などの不具合を少なくすることができる。As a result, ventilation resistance becomes smaller than before, and problems such as a decrease in air volume and an increase in noise can be reduced.
また、各ＰＴＣ素子２〜４の他方の面に接続された電極
７．８と基板９との間に所定の間隔を設けたことにより
、各ＰＴＣ素子２〜４の両側に配された電極５〜８の両
件側に送風空気が流れることになる。従って、全部の電
極５〜８が放熱板として機能するため、冷却性能を高め
て、各ＰＴＣ素子２〜４の温度上昇を抑えることができ
る。Further, by providing a predetermined distance between the electrodes 7.8 connected to the other surface of each PTC element 2 to 4 and the substrate 9, the electrodes 5 disposed on both sides of each PTC element 2 to 4 The blown air will flow to both sides of ~8. Therefore, since all the electrodes 5 to 8 function as heat sinks, the cooling performance can be improved and the temperature rise of each PTC element 2 to 4 can be suppressed.
さらには、各ＰＴＣ素子２〜４が横一列に配置されてい
るため、従来のように、中央部に位置するＰＴＣ素子の
冷却が悪くなるという問題点を解消して、各ＰＴＣ素子
２〜４を一様に冷却することができる。Furthermore, since each of the PTC elements 2 to 4 is arranged in a horizontal line, the problem of cooling of the PTC element located in the center as in the conventional case is worsened, and each PTC element 2 to 4 is arranged horizontally. can be cooled uniformly.
なお、上記の実施例では、基板９に対して、各ＰＴＣ素
子２〜４および各電極５〜８を平行に配置したが、基板
９に対して直角に配置しても良い。In the above embodiment, the PTC elements 2 to 4 and the electrodes 5 to 8 are arranged parallel to the substrate 9, but they may be arranged at right angles to the substrate 9.
第１図ないし第３図は本発明の一実施例を示すもので、
第１図は風量制御用抵抗器の斜視図、第２図は第１図の
分解斜視図、第３図は風景制御用抵抗器の断面図、第４
図は従来の抵抗器の斜視図である。
図中
１・・・風量制御用抵抗器
２〜４・・ＰＴＣ素子
５〜８・・・電極1 to 3 show an embodiment of the present invention,
Figure 1 is a perspective view of a resistor for controlling airflow, Figure 2 is an exploded perspective view of Figure 1, Figure 3 is a sectional view of a resistor for controlling landscape, and Figure 4 is a sectional view of a resistor for controlling landscape.
The figure is a perspective view of a conventional resistor. In the diagram: 1... Resistor for air volume control 2-4... PTC element 5-8... Electrode
Claims (1)
ＴＣ素子に通電するための電極とから成る送風機の風量
制御用抵抗器において、 前記各ＰＴＣ素子を送風空気の流れに沿って直列に配置
するとともに、その各ＰＴＣ素子を前記電極で両側から
挟み込んだ三層構造とし、且つ、前記電極の両外側を送
風空気が流れるように設置したことを特徴とする送風機
の風量制御用抵抗器。[Claims] 1) A plurality of PTC elements and each PTC element according to the set air volume.
In a resistor for controlling the air volume of a blower, which comprises an electrode for energizing the TC element, each of the PTC elements is arranged in series along the flow of the blown air, and each PTC element is sandwiched between the electrodes from both sides. 1. A resistor for controlling air volume of an air blower, characterized in that it has a three-layer structure and is installed so that blown air flows through both outer sides of the electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2274309A JP2743570B2 (en) | 1990-10-11 | 1990-10-11 | Blower volume control resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2274309A JP2743570B2 (en) | 1990-10-11 | 1990-10-11 | Blower volume control resistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04148501A true JPH04148501A (en) | 1992-05-21 |
| JP2743570B2 JP2743570B2 (en) | 1998-04-22 |
Family
ID=17539852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2274309A Expired - Lifetime JP2743570B2 (en) | 1990-10-11 | 1990-10-11 | Blower volume control resistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2743570B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0609933A2 (en) * | 1993-02-04 | 1994-08-10 | General Motors Corporation | Vehicle ventilator and speed control resistor circuit therefor |
| KR100382424B1 (en) * | 2001-04-23 | 2003-05-09 | 위니아만도 주식회사 | Register of blower motor for heat exchanger |
| KR20030093537A (en) * | 2002-06-03 | 2003-12-11 | 현대자동차주식회사 | Wind flux control resistor for air ventilating device in vehicle |
| KR20030097223A (en) * | 2002-06-20 | 2003-12-31 | 현대자동차주식회사 | Cooling fan resister using ceramic PTC thermistor |
| KR100469016B1 (en) * | 2002-04-02 | 2005-02-02 | 동아전기부품 주식회사 | Resistor for driving motor of airconditioner blower |
| JP2006190981A (en) * | 2004-11-29 | 2006-07-20 | Therm-O-Disc Inc | Ptc circuit protective device having parallel effective resistance regions |
| JP2016127034A (en) * | 2014-12-26 | 2016-07-11 | Ｆｄｋ鳥取株式会社 | External ptc element and cylindrical battery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS592101U (en) * | 1982-06-29 | 1984-01-09 | カルソニックカンセイ株式会社 | Structure of resistor |
-
1990
- 1990-10-11 JP JP2274309A patent/JP2743570B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS592101U (en) * | 1982-06-29 | 1984-01-09 | カルソニックカンセイ株式会社 | Structure of resistor |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0609933A2 (en) * | 1993-02-04 | 1994-08-10 | General Motors Corporation | Vehicle ventilator and speed control resistor circuit therefor |
| EP0609933A3 (en) * | 1993-02-04 | 1995-03-22 | Gen Motors Corp | Vehicle ventilator and speed control resistor circuit therefor. |
| KR100382424B1 (en) * | 2001-04-23 | 2003-05-09 | 위니아만도 주식회사 | Register of blower motor for heat exchanger |
| KR100469016B1 (en) * | 2002-04-02 | 2005-02-02 | 동아전기부품 주식회사 | Resistor for driving motor of airconditioner blower |
| KR20030093537A (en) * | 2002-06-03 | 2003-12-11 | 현대자동차주식회사 | Wind flux control resistor for air ventilating device in vehicle |
| KR20030097223A (en) * | 2002-06-20 | 2003-12-31 | 현대자동차주식회사 | Cooling fan resister using ceramic PTC thermistor |
| JP2006190981A (en) * | 2004-11-29 | 2006-07-20 | Therm-O-Disc Inc | Ptc circuit protective device having parallel effective resistance regions |
| JP2016127034A (en) * | 2014-12-26 | 2016-07-11 | Ｆｄｋ鳥取株式会社 | External ptc element and cylindrical battery |
| US10658777B2 (en) | 2014-12-26 | 2020-05-19 | Fdk Corporation | Externally-attached PTC element and tubular battery |
| US10797419B2 (en) | 2014-12-26 | 2020-10-06 | Fdk Corporation | Externally-attached PTC element and tubular battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2743570B2 (en) | 1998-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0180458B1 (en) | Kitchen unit cooking stove having internal cooling system | |
| JP4020650B2 (en) | Battery device for vehicle | |
| US5471034A (en) | Heater apparatus and process for heating a fluid stream with PTC heating elements electrically connected in series | |
| JPH04148501A (en) | Air flow controlling resistor for fan | |
| JP2003229110A (en) | Battery device for vehicle | |
| JPH1187039A (en) | Heating cooker | |
| JP3817837B2 (en) | Resistor for speed control of vehicle blower | |
| JPH0754763Y2 (en) | Ventilation electric warmer | |
| JPH0755130Y2 (en) | Resistors for controlling blowers of automobile air conditioners | |
| JPS5914665Y2 (en) | Blower control device | |
| JPH04208096A (en) | Blower controller | |
| JPH0618805Y2 (en) | Blower control device for automobile air conditioner | |
| JPH0546484Y2 (en) | ||
| KR100811733B1 (en) | Blower motor control structure of air-conditioner | |
| KR200144733Y1 (en) | Blower Motor Control | |
| JPH0341924Y2 (en) | ||
| JPH0617308Y2 (en) | Transistor protector | |
| JPH10285945A (en) | Inverter power unit | |
| JPS5934086Y2 (en) | Blower motor speed change resistor | |
| JP2526610B2 (en) | Heating device | |
| JPH06201215A (en) | Electronic refrigeration unit | |
| JPH08148309A (en) | Positive temperature coefficient thermistor | |
| JPS6280122A (en) | Warm air device for loading on vehicle | |
| JPS6225628Y2 (en) | ||
| JPS6350814Y2 (en) |