JPS59149807A - Automatic car air-conditioner - Google Patents

Automatic car air-conditioner

Info

Publication number
JPS59149807A
JPS59149807A JP2284383A JP2284383A JPS59149807A JP S59149807 A JPS59149807 A JP S59149807A JP 2284383 A JP2284383 A JP 2284383A JP 2284383 A JP2284383 A JP 2284383A JP S59149807 A JPS59149807 A JP S59149807A
Authority
JP
Japan
Prior art keywords
current
power supply
light emitting
voltage
temperature
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
Application number
JP2284383A
Other languages
Japanese (ja)
Other versions
JPH0137288B2 (en
Inventor
Hidekazu Otsu
英一 大津
Tsuguhiro Okada
岡田 次弘
Kenji Emi
江見 健二
Masanori Kubota
久保田 正則
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Hitachi Automotive Systems Engineering Co Ltd
Original Assignee
Hitachi Automotive Engineering Co Ltd
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Automotive Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Automotive Engineering Co Ltd
Priority to JP2284383A priority Critical patent/JPS59149807A/en
Publication of JPS59149807A publication Critical patent/JPS59149807A/en
Publication of JPH0137288B2 publication Critical patent/JPH0137288B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821Control 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
    • B60H1/00864Ventilators and damper doors

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

PURPOSE:To eliminate the influence of fluctuation of power supply voltage onto the maximum current, by varying the current flowing through light emission diodes in accordance to the ambient temperature, in an automatic car air-conditioner employing light emission diodes. CONSTITUTION:Voltage division signal of inner air temperature thermister 2 and resistor 3 and power supply voltage signal divided by resistors 21a, 21b are input through a converter 4 to a microcomputer 1. The microcomputer 1 will operate cooling/warming cycle control to obtain forward current through light emission diodes 10a, 10b on the basis of stored characteristic thus to obtain firing time (t). Then the control target position of air mix door 7 is calculated to obtain applying voltage of blower motor 9 thus to control the blower motor 9 through a fan controller 8. Here necessary interruption processing is performed to detect/correct the air mix door 7 position by means of feedback position signal 16. With such arrangement, the influence of fluctuation of power supply source voltage can be prevented.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、自動車用自動空気調和装置に係シ、特に、発
光ダイオードを用いた表示において発光ダイオードの周
囲温度における光度ケ常に最大に保つことができる自動
車用自動空気調和装置に関する。
[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to automatic air conditioners for automobiles, and in particular, to a display using light emitting diodes, in which the luminous intensity at the ambient temperature of the light emitting diodes can always be kept at a maximum. Regarding automatic air conditioners for automobiles that can be used.

〔従来技術〕[Prior art]

従来、自動車用自動空気調和装置の表示装置としてラン
プを用いたものがある。しかし、このようなランプを用
いたものにあっては発熱等を生じるといった問題がある
。また、この自動車用自動空気調和装置の表示装置とし
て液晶や螢光表示管を用いることも考えられるが、液晶
や螢光表示管を用いた場合には、端子の分のスペースを
必要とし、その駆動法が複雑であったシ、あるいは、電
源電圧が高い等の問題がある。
Conventionally, there are automatic air conditioners for automobiles that use lamps as display devices. However, devices using such lamps have a problem in that they generate heat. It is also possible to use a liquid crystal or fluorescent display tube as a display device for this automatic air conditioning system for automobiles, but if a liquid crystal or fluorescent display tube is used, it will require space for the terminals. There are problems such as a complicated driving method or a high power supply voltage.

そこで、近年、形状が豊富で多様な色があシデザイン的
にすぐれ、発熱の問題もない発光ダイオードが用いよれ
るようになった。しかし、発光ダイオードは、その周囲
温度に対して第1図に示す如き順電流特性を有している
。このため、使用温度範囲の最高温度の電流に合わせて
電流値を制限するか、雰囲気温度に応じて電流制御のた
めの温度検出素子を含む制御回路を設ける必要がある。
Therefore, in recent years, light emitting diodes, which come in a wide variety of shapes, come in a variety of colors, are excellent in design, and do not have the problem of heat generation, have come into use. However, the light emitting diode has forward current characteristics as shown in FIG. 1 with respect to its ambient temperature. Therefore, it is necessary to limit the current value according to the current at the highest temperature in the operating temperature range, or to provide a control circuit including a temperature detection element for controlling the current according to the ambient temperature.

前者は、通電電流が最高温度の許容電流に制限されてい
るため、常温では、そのときの最大電流が流れず、光度
が低く見えづらいという欠点がある。
In the former case, since the current to be supplied is limited to the allowable current at the maximum temperature, the maximum current at that time does not flow at room temperature, and the luminous intensity is low, making it difficult to see.

また、後者は、電流制御のための温度検出素子や回路を
必要とするという欠点を有している。
Furthermore, the latter has the disadvantage of requiring a temperature detection element and circuit for current control.

この表示装置に用いられる発光ダイオードは、自動車用
であるため電源電圧が定電圧ではなく(自動車の走行負
荷や、ライト点灯等によって常に変動している)、電源
電圧変動を考慮した制御をしないと、その最大電圧に合
せて通電電流を決めることになり、通常の電圧が最大電
圧の約8割であるため、通電電流も約8割となシ、光度
が低く見えにくくなる。
Since the light-emitting diodes used in this display device are used in automobiles, the power supply voltage is not a constant voltage (it constantly fluctuates depending on the vehicle's running load, the lighting of lights, etc.), and it must be controlled in consideration of power supply voltage fluctuations. The current to be applied is determined according to the maximum voltage, and since the normal voltage is about 80% of the maximum voltage, the current to be applied is also about 80%, and the luminous intensity is low and it is difficult to see.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、発光ダイオード電流制御のために専用
の温度センサを設けずに、当該雰囲気温度における最大
電流を電源電圧の変動による影響を受けずに供給するこ
とのできる自動車用自動空気調和装置を提供することに
ある。
An object of the present invention is to provide an automatic air conditioner for an automobile that can supply the maximum current at the ambient temperature without being affected by fluctuations in power supply voltage without providing a dedicated temperature sensor for controlling light emitting diode current. Our goal is to provide the following.

〔発明の概要〕[Summary of the invention]

本発明は、自動空気調和のために検出する車室内気温度
をもって発光ダイオードの周囲温度として検出し、該検
出温度に対応させて発光ダイオードの点灯周期における
通電時間を変化させ、該雰囲気温度における許容最大電
流を流すことによシ、発光ダイオード電流制御のために
専用の温度センサを設けずに、当該雰囲気温度における
最大電流を電源電圧の変動による影響を受けないように
しようというものである。
The present invention detects the indoor air temperature detected for automatic air conditioning as the ambient temperature of a light emitting diode, changes the energization time in the lighting cycle of the light emitting diode in accordance with the detected temperature, and adjusts the permissible temperature at the ambient temperature. By flowing the maximum current, the maximum current at the ambient temperature is not affected by fluctuations in the power supply voltage without providing a dedicated temperature sensor for controlling the light emitting diode current.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の実施例について説明する。 Examples of the present invention will be described below.

車室内に設けられている操作盤には、空気調和装置の動
きケマニュアル操作するためのスイッチと、マニュアル
設定状態を表示するだめの発光ダイオードが設けられて
いる。ところで、発光ダイオードの周囲温度に対する順
電流特性は、第1図に示すとと(、A−)B−+Cと温
度が上昇するに従い、■l→■2→I3と減少する。そ
こで、空気調和のために検出する車室内気温度を該発光
ダイオードの周囲温度として用い、第2図に示す発光ダ
イオード駆動周期(T)に対する点灯時間(1)を第2
図(13)、(C)の如く求める。つまシ、温度がA、
B、Cと高くなるにつれ、順電流(I>は、If + 
I! + Isと減少し、最大電源電圧(V□8)にお
ける発光ダイオード点灯時間(t′)を後述の(1)式
よj7tx、t* と減少させる。さらに、電源電圧(
V)の影響を排除するために、後述の(2)式を用いて
、発光ダイオード点灯時間(1)を求める。但し、点灯
時間(1)の上限値は周期(T)とし、voは発光ダイ
オード及び駆動用トランジスタにおける電圧降下分で定
数であり、■□、は最大電圧で定数である。
The control panel installed inside the vehicle is equipped with a switch for manually operating the air conditioner and a light emitting diode for displaying the manual setting status. By the way, the forward current characteristic of the light emitting diode with respect to the ambient temperature is shown in FIG. 1, and as the temperature rises from (,A-)B-+C, it decreases from ■1 to ■2 to I3. Therefore, the indoor air temperature detected for air conditioning is used as the ambient temperature of the light emitting diode, and the lighting time (1) with respect to the light emitting diode drive cycle (T) shown in FIG.
It is determined as shown in Figures (13) and (C). Tsumashi, the temperature is A,
As B and C increase, the forward current (I> becomes If +
I! + Is, and the light emitting diode lighting time (t') at the maximum power supply voltage (V□8) is reduced to j7tx,t* according to equation (1) described later. In addition, the power supply voltage (
In order to eliminate the influence of V), the light emitting diode lighting time (1) is determined using equation (2) described later. However, the upper limit of the lighting time (1) is the period (T), vo is a constant due to the voltage drop in the light emitting diode and the driving transistor, and ■□ is the maximum voltage and is a constant.

このとき、通電時間100%時の通電電流を通常動作電
圧で最大許容電流になるように設定する。
At this time, the energizing current when the energizing time is 100% is set to be the maximum allowable current at the normal operating voltage.

しかし、電源電圧の変動を考慮しないときは、通電時間
100%時の通電電流を電源電圧の最大値にて求め、(
2)式におけるt′の係数を1とする。
However, when fluctuations in the power supply voltage are not taken into account, the conduction current at 100% conduction time is determined using the maximum value of the power supply voltage, and (
2) Let the coefficient of t' in the equation be 1.

また、雰囲気温度の変動を考慮しないときは、通電時間
100%時の電流を使用温度範囲の最大許容電流の最小
値になるように求め、前記(1)式のTの係数を1とす
る。
Furthermore, when fluctuations in ambient temperature are not taken into account, the current at 100% energization time is determined to be the minimum value of the maximum allowable current within the operating temperature range, and the coefficient of T in equation (1) is set to 1.

第3図には、本発明の一実施例が示されている。FIG. 3 shows an embodiment of the invention.

図において、lは、マイクロコンピュータであり、中央
処理製電、プログラムを記憶するリード・オンリ・メモ
リ(ROM)、データを格納するランダム・アクセス・
メモリ(RAM)、入出力端子のレジスタなど各種レジ
スタ、さらに、発振器及びそのシステムクロックを分周
してカウントし、割込みを発生させるタイマ等が内蔵さ
れている。また、2はサーミスタ、3は抵抗器、4はア
ナログデジタル変換器(A/D変換器)、5はエバポレ
ータ、6はヒータ、7はエアミックスドア、8はファン
コントローラ、9はブロアモータ、10a、10bは発
光ダイオード、118.11bは抵抗器、12a、12
bはトランジスタ、13a、13bはベース抵抗、14
a、14bはスイッチ、15a、15bは抵抗、16は
フィードバックポテンショ、17はトライバ、18a。
In the figure, l is a microcomputer, which includes a central processing unit, a read-only memory (ROM) for storing programs, and a random access memory (ROM) for storing data.
It includes a memory (RAM), various registers such as input/output terminal registers, and a timer that divides and counts an oscillator and its system clock and generates interrupts. Also, 2 is a thermistor, 3 is a resistor, 4 is an analog-to-digital converter (A/D converter), 5 is an evaporator, 6 is a heater, 7 is an air mix door, 8 is a fan controller, 9 is a blower motor, 10a, 10b is a light emitting diode, 118.11b is a resistor, 12a, 12
b is a transistor, 13a and 13b are base resistors, 14
a and 14b are switches, 15a and 15b are resistors, 16 is a feedback potentiometer, 17 is a driver, and 18a.

18bil:電磁バルブ、19はアクチェータ、20は
リターンスプリング、21a、21bは抵抗器である。
18bil: electromagnetic valve; 19 is an actuator; 20 is a return spring; 21a and 21b are resistors.

次に、第3図図示実施例の動作を第4図図示フローチャ
ートを用いて説明する。
Next, the operation of the embodiment shown in FIG. 3 will be explained using the flowchart shown in FIG. 4.

まず、マイクロコンピュータ1は、リセットがかかると
、メイン処理の実行を開始する。メイン処理が背景処理
として操返される間にタイマにセットされた時間毎に割
込みがかかシ、割込み処理を実行する。
First, when the microcomputer 1 is reset, it starts executing main processing. While the main processing is being repeated as background processing, an interrupt is activated at every time set in the timer, and the interrupt processing is executed.

ステップ30においては、内気温度センサのサーミスタ
2と抵抗器3の分圧信号及び電源電圧を抵抗器21a、
、・21bで分圧して得られる電源電圧信号をアナログ
ディジタル変換器4ケ介して、車室内気温度及び電源電
圧として入力する。次にステップ31では冷暖房サイク
ル制御のための演算処理を行なう。ステップ32では、
ステップ30で入力した温度からマイクロコンピュータ
1の内部に記憶されている第1図の特性よシ発光ダイオ
ード10a、10bの順電流を求め、前述の(■)式及
び電源電圧(V)金考I・「シた(2)式より5点灯周
期(T)における点灯時間(t)’を求める。
In step 30, the divided voltage signal and power supply voltage of the thermistor 2 and resistor 3 of the inside air temperature sensor are connected to the resistor 21a,
, 21b, the power supply voltage signal obtained by voltage division is inputted as the vehicle interior air temperature and power supply voltage through four analog-to-digital converters. Next, in step 31, arithmetic processing for heating and cooling cycle control is performed. In step 32,
The forward currents of the light emitting diodes 10a and 10b are determined from the temperature input in step 30 and the characteristics shown in FIG.・Determine the lighting time (t)' in 5 lighting cycles (T) from equation (2).

前述のごとく、電源電圧の変動を考慮しない場合は通電
率100条における電流が電源電圧の最大値で最大許容
電流になるよう抵抗器11a、llbの値が決められ、
(1)式のt/Vそのまま通電時間(1)とする。また
、雰囲気温度の変動を考慮しない場合は、通電率100
チにおける電流が使用温度範囲の最大許容電流の最小値
になるよう前者の場合同様抵抗器11a、llbの値が
決められ、(2)式のt′に周期(T[−用いて通電時
間(1)を求める。ステップ33では、エバポレータ5
で冷却された空気をヒータ6を通して再加熱する割合を
制御するエアミックスドア7の制御目標位置ヲ箕出する
。ステップ34では、ブロアモータ印加電圧を算出し、
ファンコントローラ8を介してプロアモータ9を制御す
る。以上のメイン処理を操返す間、次の割込み処理を行
なう。あらかじめセットされたタイマのオーバーフロー
によシ割込みが発生すると、ステップ40で発光ダイオ
ード(LED)?点灯中か判断し、次が消灯の周期であ
れば、ステップ41で、消灯の時間をタイマにセットし
た後、ステップ42で発光ダイオード10a、10be
消灯する。一方、次が点灯の周期であれば、ステップ4
3で、タイマに点灯の時間をセットした後、ステップ4
4で、設定されているモードと示す発光ダイオード(L
ED)10a、10bi点灯する。LEDIOa、10
bの駆動は、電流制限のだめの抵抗器11a、llbケ
介してトランジスタ12a、12bで行ない、そのベー
ス抵抗13a、13bを介してオンオフする。ステップ
45では、マニュアル選択のスイッチ14a、14bの
オンオフを電源側に抵抗15a、15bでつって、その
電位により入力し、マニアル選択を受付ける。ステップ
46では、エアミックスドア7に連動するフィードバッ
クポテンシEi16よシの信号をアナログディジタル変
換器4を介して入力し、エアミックスドア7の位置を検
出し、メインスローのステップ33で定めた目標位置を
比較して、トランジスタで構成される(9) ドライバ17を介して電磁バルブisa、18bによシ
アクチエータ19に加える負圧を制御してリターンスプ
リング20とのバランスでエアミックスドア7を目標位
置に修正する。
As mentioned above, when fluctuations in the power supply voltage are not considered, the values of the resistors 11a and 11b are determined so that the current at a duty ratio of 100 becomes the maximum allowable current at the maximum value of the power supply voltage.
Let t/V in equation (1) be the same as the energization time (1). In addition, if fluctuations in the ambient temperature are not taken into account, the current conductivity is 100.
Similarly to the former case, the values of the resistors 11a and 11b are determined so that the current in the current at 1).In step 33, the evaporator 5
A control target position of the air mix door 7 that controls the rate at which the cooled air is reheated through the heater 6 is determined. In step 34, the blower motor applied voltage is calculated,
A pro motor 9 is controlled via a fan controller 8. While repeating the above main processing, the next interrupt processing is performed. When an interrupt occurs due to an overflow of a preset timer, the light emitting diode (LED)? It is determined whether the light is on or not, and if the next cycle is to turn off the light, in step 41, the timer is set to turn off the light, and in step 42, the light emitting diodes 10a, 10be are turned off.
Lights out. On the other hand, if the next cycle is lighting, step 4
After setting the lighting time on the timer in step 3, proceed to step 4.
4, the light emitting diode (L) indicates the set mode.
ED) 10a and 10bi light up. LEDIOa, 10
The transistors b are driven by transistors 12a and 12b via current-limiting resistors 11a and llb, and turned on and off via their base resistors 13a and 13b. In step 45, the on/off state of the manual selection switches 14a, 14b is inputted using the potentials connected to the power supply side by resistors 15a, 15b, and the manual selection is accepted. In step 46, a signal from the feedback potential Ei16 linked to the air mix door 7 is inputted via the analog-digital converter 4, the position of the air mix door 7 is detected, and the target position determined in step 33 of the main throw is input. (9) The negative pressure applied to the actuator 19 is controlled by the solenoid valve isa and 18b via the driver 17, and the air mix door 7 is brought to the target position in balance with the return spring 20. Fix it.

したがって、本実施例によれば、車室内気温度をもって
て該発光ダイオードの雰囲気温度を検出して当該雰囲気
温度の最大許容電流を流すだけでも使用温度範囲の最高
温度における許容電流に固定する場合に比し、通電電流
を3倍にすることができ光度を増加させることができる
Therefore, according to this embodiment, even if the ambient temperature of the light emitting diode is detected based on the vehicle interior temperature and the maximum allowable current of the ambient temperature is caused to flow, the allowable current is fixed at the highest temperature in the operating temperature range. Compared to this, the applied current can be tripled and the luminous intensity can be increased.

また、本実施例によれば、電源電圧を検出して通電電流
を制御するだけでも、電源電圧の最大値にあわせて通電
電流を設定する場合に比し、通常電圧で通電電流を2割
増すことができ光度を増加させることができる。
Furthermore, according to this embodiment, simply by detecting the power supply voltage and controlling the conduction current, the conduction current can be increased by 20% at the normal voltage compared to the case where the conduction current is set according to the maximum value of the power supply voltage. It can increase the luminous intensity.

このように、本実施例によれば、空気調和のために検出
した車室内気温度及び発光ダイオード電源電圧の両方あ
るいはいずれの一方の情報全発光ダイオード通電電流の
制御にも用いて、発光ダイオードに常にその周囲温度に
おける最大電流全流(10) すことができる効果がある。
As described above, according to this embodiment, the information on the vehicle interior temperature detected for air conditioning and/or the light emitting diode power supply voltage is used to control the total light emitting diode conduction current, and the information is used to control the total light emitting diode current. The effect is that it can always maintain the maximum current (10) at the ambient temperature.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明によれば、発光ダイオード
電流制御のために専用の温度上ンサを設けずに、当該雰
囲気温度における最大電流を電源電圧の変動による影響
を受けずに供給することができる。
As explained above, according to the present invention, it is possible to supply the maximum current at the ambient temperature without being affected by fluctuations in the power supply voltage without providing a dedicated temperature sensor for controlling the light emitting diode current. can.

【図面の簡単な説明】[Brief explanation of the drawing]

#c1図は発光ダイオードの周囲温度に対する順電流特
性図、第2図は各周囲温度における発光ダイオード駆動
のタイムチャート、第3図は本発明の実施例を示す構成
図、第4図は第3図のフローチャートである。 1・・・マイクロコンピュータ、2・・・サーミスタ、
4・・・A/D変換器、10a、10b・・・発光ダイ
オ−(11) 第1図 第2図
#c1 is a forward current characteristic diagram of a light emitting diode versus ambient temperature, FIG. 2 is a time chart of driving the light emitting diode at each ambient temperature, FIG. 3 is a configuration diagram showing an embodiment of the present invention, and FIG. FIG. 1...Microcomputer, 2...Thermistor,
4... A/D converter, 10a, 10b... Light emitting diode (11) Fig. 1 Fig. 2

Claims (1)

【特許請求の範囲】 1、マイクロコンピュータを用い自動車の室内の温度を
検出して車室内を所定温度にコントロールシ、該コント
ロールの状態を発光ダイオード素子を用いて表示する自
動車用自動空気調和装置において、上記発光ダイオード
に流す電流を周囲温度に応じて変化させる手段を設けた
ことを特徴とする自動車用自動空気調和装置。 2、特許請求の範囲第1項記載の発明において、上記周
囲温度は車室内温度であることを特徴とする自動車用自
動空気調和装置。
[Claims] 1. In an automatic air conditioner for an automobile that uses a microcomputer to detect the temperature inside the automobile, controls the interior of the automobile to a predetermined temperature, and displays the control status using a light emitting diode element. . An automatic air conditioner for an automobile, comprising means for changing the current flowing through the light emitting diode according to the ambient temperature. 2. The automatic air conditioner for an automobile according to the invention as set forth in claim 1, wherein the ambient temperature is a vehicle interior temperature.
JP2284383A 1983-02-16 1983-02-16 Automatic car air-conditioner Granted JPS59149807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2284383A JPS59149807A (en) 1983-02-16 1983-02-16 Automatic car air-conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2284383A JPS59149807A (en) 1983-02-16 1983-02-16 Automatic car air-conditioner

Publications (2)

Publication Number Publication Date
JPS59149807A true JPS59149807A (en) 1984-08-27
JPH0137288B2 JPH0137288B2 (en) 1989-08-07

Family

ID=12093985

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2284383A Granted JPS59149807A (en) 1983-02-16 1983-02-16 Automatic car air-conditioner

Country Status (1)

Country Link
JP (1) JPS59149807A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100310008B1 (en) * 1999-09-30 2001-09-29 류정열 electronic wave intercepting divice of blowmotor for vehicles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5820509A (en) * 1981-07-29 1983-02-07 Diesel Kiki Co Ltd Display device for air conditioner of vehicle
JPS5822843A (en) * 1981-07-30 1983-02-10 Sanyo Electric Co Ltd Solar heat collecting apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5820509A (en) * 1981-07-29 1983-02-07 Diesel Kiki Co Ltd Display device for air conditioner of vehicle
JPS5822843A (en) * 1981-07-30 1983-02-10 Sanyo Electric Co Ltd Solar heat collecting apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100310008B1 (en) * 1999-09-30 2001-09-29 류정열 electronic wave intercepting divice of blowmotor for vehicles

Also Published As

Publication number Publication date
JPH0137288B2 (en) 1989-08-07

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