JPS58136532A - Lighting device of illuminating fluorescent lamp in automobile - Google Patents

Lighting device of illuminating fluorescent lamp in automobile

Info

Publication number
JPS58136532A
JPS58136532A JP57019241A JP1924182A JPS58136532A JP S58136532 A JPS58136532 A JP S58136532A JP 57019241 A JP57019241 A JP 57019241A JP 1924182 A JP1924182 A JP 1924182A JP S58136532 A JPS58136532 A JP S58136532A
Authority
JP
Japan
Prior art keywords
door
switch
fluorescent lamp
terminal
turn
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.)
Pending
Application number
JP57019241A
Other languages
Japanese (ja)
Inventor
Akito Kawamoto
川本　昭登
Yukinobu Sako
行信 佐子
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP57019241A priority Critical patent/JPS58136532A/en
Publication of JPS58136532A publication Critical patent/JPS58136532A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/80—Circuits; Control arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

PURPOSE:To act a reflector plate as a proximity conductor and stably flow an electric current at lighting, by connecting the reflector plate and turn-on and door terminals of a device selector switch in a fluorescent lamp device to the earth of a body connected to the negative electrode side of a battery. CONSTITUTION:If a device selector switch 16 is turned to the side of an on- terminal 16b, a base current of a no-load protecting transistor 4 flows to a body, connected to the negative side of a battery 1, via a resistor 20, filament 15a of a fluorescent tube 15, preheater winding 13 and switch 16 to turn on the Tr4. In this way, an oscillating transistor Tr3 performs blocking oscillation to generate high voltage in the secondary side of an oscillating transformer 14 and turn on a fluorescent lamp 15. Here a metallic reflector plate 21 connected to the earth of the body is operated as a proximity conductor to flow a stable current as lighting even if voltage of the battery is changed. Further under a condition with the switch 16 in the side of a door terminal 16c, even if a door is opened to turn on a door switch 22, similar action is operated.

Description

【発明の詳細な説明】 本発明は、自動車内照明用螢光灯の点灯装置に関するも
ので、その目的とするところは、自動車のバッテリー電
源電圧の変動があっても螢光管の点灯特電流を安定化さ
せることができる点灯装置を提供することにある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lighting device for a fluorescent lamp for illuminating the interior of an automobile, and an object of the present invention is to maintain the lighting special current of the fluorescent tube even when the automobile battery power supply voltage fluctuates. The object of the present invention is to provide a lighting device that can stabilize the lighting conditions.

以下、本発明の一実施例を図面にもとづいて説明する。Hereinafter, one embodiment of the present invention will be described based on the drawings.

図において、１は自動車のバッテリー電源で、このバッ
テリー電源１のマイナス側は自動車のボデーにアースさ
れている。２はバッテリー電源１のプラス側に接続され
た電解コンデンサで、この電解コンデンサ２はバッテリ
ー電源１の内部インピーダンスを小さくするために設け
られたものである。３は発振トランジスタ、４は無負荷
保護用トランジスタで、このトランジスタ４は前記発振
トランジスタ３のペース抵抗６をコレクタ抵抗としてい
る。６は無負荷保護用トランジスタ４０ベース・エミッ
タ間に接続した抵抗、７，８は前記発振トランジスタ３
のベース抵抗６に直列に接続したコンデンサで、このコ
ンデンサ７．８の接続点は前記発振トランジスタ３のエ
ミッタに接続している。９，１０，１１，１２，１３は
同一のフェライトコアに巻かれた巻線で、発振トランス
１−４を構成している。そしてこの発振トランス１４の
１次側巻線１０と、発振トランス１４０２次側における
螢光管１６の一方のフィラメント１５ａを予熱するフィ
ラメント予熱巻線１３は接続され、そしてこれらは器体
切替スイッチ１６の共通端子１６ａに接続されている。In the figure, 1 is a battery power source of an automobile, and the negative side of this battery power source 1 is grounded to the body of the automobile. Reference numeral 2 denotes an electrolytic capacitor connected to the positive side of the battery power source 1, and this electrolytic capacitor 2 is provided to reduce the internal impedance of the battery power source 1. 3 is an oscillation transistor, 4 is a no-load protection transistor, and this transistor 4 uses the pace resistor 6 of the oscillation transistor 3 as a collector resistance. 6 is a resistor connected between the base and emitter of the no-load protection transistor 40; 7 and 8 are the oscillation transistors 3;
The connection point of this capacitor 7.8 is connected to the emitter of the oscillation transistor 3. 9, 10, 11, 12, and 13 are windings wound around the same ferrite core, and constitute an oscillation transformer 1-4. The primary winding 10 of this oscillation transformer 14 is connected to the filament preheating winding 13 that preheats one filament 15a of the fluorescent tube 16 on the secondary side of the oscillation transformer 140. It is connected to the common terminal 16a.

また螢光管１６の他方のフィラメント１５ｂは発振トラ
ンス１４の２次側におけるフィラメント予熱巻線１１と
接続されている。１７は発振トランス１４０２次側にお
ける高圧巻線１２と並列に接続されたコンデンサ、１８
は前記コンデンサ１７の一方と前記フィラメント予熱巻
線１１の一方との間に接続された螢光管電流制限用コン
デンサである。１９は前記フィラメント予熱巻線１３と
螢光管１６の一方のフィラメント１５ａとの間に接続さ
れたダイオードで、このダイオード１９はアノード側が
前記器体切替スイッチ１６の共通端子１６ａ側に位置し
、かつカソード側が螢光管１６の一方のフィラメント１
５ａ側に位置するように接続している。The other filament 15b of the fluorescent tube 16 is connected to the filament preheating winding 11 on the secondary side of the oscillation transformer 14. 17 is a capacitor connected in parallel with the high voltage winding 12 on the secondary side of the oscillation transformer 140; 18
is a fluorescent tube current limiting capacitor connected between one of the capacitors 17 and one of the filament preheating windings 11. A diode 19 is connected between the filament preheating winding 13 and one filament 15a of the fluorescent tube 16, and the anode side of the diode 19 is located on the common terminal 16a side of the body changeover switch 16. The cathode side is one filament 1 of the fluorescent tube 16.
It is connected so that it is located on the 5a side.

また前記無負荷保護用トランジスタ４のベースは、抵抗
２０を介してダイオード１９のカソード側に接続し、か
つコレクタはベース抵抗６．１次側巻線９を介して発振
トランジスタ３０ベースに接続している。The base of the no-load protection transistor 4 is connected to the cathode side of the diode 19 via the resistor 20, and the collector is connected to the base of the oscillation transistor 30 via the base resistor 6 and the primary winding 9. There is.

２１は螢光灯器体の金属製反射板で、この金属製反射板
２１は器体切替スイッチ１６のオン端子１６ｂと接続す
るとともに、螢光灯器体と同時にビスで自動車のボデー
に接続固定している。この固定により、金属製反射板２
１は自動車のボデーにアースされて近接導体の役目を果
たす。また前記器体切替スイッチ１６のドア一端子１６
ｃはドアースイッチ２２を介して自動車のボデーにアー
スされる。Reference numeral 21 denotes a metal reflector plate of the fluorescent lamp body.This metal reflector plate 21 is connected to the ON terminal 16b of the body changeover switch 16, and is also connected and fixed to the body of the automobile with screws at the same time as the fluorescent lamp body. are doing. With this fixation, the metal reflector 2
1 is grounded to the body of the automobile and serves as a proximal conductor. Also, the door terminal 16 of the vessel changeover switch 16
c is grounded to the body of the automobile via the door switch 22.

上記構成において動作を説明する。器体切替スイッチ１
６をオン端子１６ｂに接続すると、無負荷保護用トラン
ジスタ４のベース電流が抵抗２ｏ、螢光管１６の一方の
フィラメント１６ａ１フィラメント予熱巻線１３、器体
切替スイッチ１６の共通端子１６ａ、オン端子１６ｂを
通って、バッテリー電源１のマイナス側に接続された自
動車のボデーへと流れるため、無負荷保護用トランジス
タ４がオンする。このオンにより発振トランジスタ３も
ベース抵抗６を介してオンしてブロッキング発振をし、
この発振によシ発振トランス１４の２次側に高電圧を発
生させ、この高電圧によシ螢光管１６を点灯させる。こ
の場合、金属製反射板２１が自動車のボデーにアースさ
れているため、この反射板２１は近接導体の役目を果た
して、自動車のバッテリー電源１の電圧変動があっても
、螢光管１６の点灯特電流を安定化させることができる
。The operation in the above configuration will be explained. Equipment changeover switch 1
6 is connected to the ON terminal 16b, the base current of the no-load protection transistor 4 flows through the resistor 2o, one filament 16a1 of the fluorescent tube 16, the filament preheating winding 13, the common terminal 16a of the body changeover switch 16, and the ON terminal 16b. The no-load protection transistor 4 is turned on because it flows through the battery power source 1 to the vehicle body connected to the negative side of the battery power source 1. As a result of this turning on, the oscillation transistor 3 is also turned on via the base resistor 6, causing blocking oscillation.
This oscillation generates a high voltage on the secondary side of the oscillation transformer 14, and this high voltage lights up the fluorescent tube 16. In this case, since the metal reflector 21 is grounded to the body of the car, this reflector 21 plays the role of a proximal conductor, and even if there is a voltage fluctuation of the car's battery power source 1, the fluorescent tube 16 is turned on. Special current can be stabilized.

次に器体切替スイッチ１６をドア一端子１８ｃに接続し
た状態で、自動車のドアを開くと、ドアースイッチ２２
がオンするため、無負荷保護用トランジスタ４のベース
電流が抵抗２０．螢光管１６の一方のフィラメント１６
ａ、フィラメント予熱巻線１３、器体切替スイッチ１６
の共通端子１８ａ、ドア一端子１６Ｃ，ドアースイッチ
２２を通って、バッテリー電源１のマイナス側に接続さ
れた自動車のボデーへと流れるため、無負荷保護用トラ
／ラスタ４がオンする。このオンにより発振トランに高
電圧を発生させ、この高電圧により螢光管を点灯させる
。この場合も、前述したオン端子１６ｂ接続時と同様、
金属製反射板２１が自動車のボデーにアースされている
ため、この反射板２１は近接導体の役目を果たして、自
動車のバッテリー電源１の電圧変動があっても、螢光管
１６０点灯時電流を安定化させることができる。Next, when the car door is opened with the body changeover switch 16 connected to the door terminal 18c, the door switch 22
is turned on, the base current of the no-load protection transistor 4 is increased by the resistor 20. One filament 16 of the fluorescent tube 16
a, filament preheating winding 13, vessel changeover switch 16
Since it flows through the common terminal 18a, the door terminal 16C, and the door switch 22 to the vehicle body connected to the negative side of the battery power source 1, the no-load protection traverse/raster 4 is turned on. When turned on, a high voltage is generated in the oscillation transformer, and this high voltage lights up the fluorescent tube. In this case, as well as when connecting the ON terminal 16b described above,
Since the metal reflector 21 is grounded to the body of the car, this reflector 21 serves as a proximal conductor and stabilizes the current when the fluorescent tube 160 is turned on even if there is a voltage fluctuation in the car's battery power source 1. can be made into

以上のように本発明によれば、螢光灯器体の反射板を、
自動車のバッテリー電源のマイナス側に接続される自動
車のボデーにアースするとともに、器体切替スイッチの
オン端子およびドア一端子を自動車のボデーにアースす
るようにしているため、器体切替スイとチをオン端子に
接続した場合、あるいは器体切替スイッチをドア一端子
に接続してドアースイッチをオンした場合においても、
前記反射板は近接導体として働くことになり、その結果
、発振トランスの２次側巻線数を軽減できるとともに、
自動車のバッテリー電源の電圧変動があっても、螢光管
の点灯特電流を安定化させることができるものである・As described above, according to the present invention, the reflector of the fluorescent lamp body is
In addition to grounding the car body, which is connected to the negative side of the car's battery power supply, the on terminal and door terminal of the body changeover switch are also grounded to the body of the car. Even when connected to the ON terminal, or when the device changeover switch is connected to the door terminal and the door switch is turned on,
The reflector acts as a close conductor, and as a result, the number of secondary windings of the oscillation transformer can be reduced, and
Even if there are voltage fluctuations in the car's battery power supply, it is possible to stabilize the lighting special current of the fluorescent tube.

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

図は本発明の一実施例における自動車内照明用螢光灯の
点灯装置の回路図である。 １・・・・・・自動車のバッテリー電源、３・・・・・
・発振トランジスタ、１０・・・・・・１次側巻線、１
３・・・・・・フィラメント予熱巻線、１４・・・・・
・発振トランス、１５・・・・・・螢光管、１６・・・
・・・器体切替スイッチ、１８ａ・・・・・・共通端子
、１６ｂ・・・・・・オン端子、１６ｃ・・・・・・ド
ア一端子、２１・・・・・・反射板、２２・・・・・・
ドアースイッチ。The figure is a circuit diagram of a lighting device for a fluorescent lamp for illuminating the interior of an automobile in one embodiment of the present invention. 1... Car battery power supply, 3...
・Oscillation transistor, 10...Primary winding, 1
3...Filament preheating winding, 14...
・Oscillation transformer, 15... Fluorescent tube, 16...
... Body changeover switch, 18a... Common terminal, 16b... On terminal, 16c... Door terminal, 21... Reflector, 22・・・・・・
door switch.

Claims (1)

【特許請求の範囲】[Claims] 発振トランジスタの発振により発振トランスの２次側に
高電圧を発生させ、この高電圧により螢光管を点灯させ
る自動車内照明用螢光灯の点灯装置において、前記発振
トランスの１次側巻線と、発振トランスの２次側におけ
る螢光管のフィラメント予熱巻線を接続するとともに、
これらを器体切替スイッチの共通端子に接続し、かつ前
記器体切替スイッチのオン端子と螢光灯器体の反射板を
接続して自動車のボデーにアースし、さらに前記器体切
替スイッチのドア一端子をドアースイッチを介して自動
車のボデーにアースするとともに、自動車のバッテリー
電源のマイナス側を自動車のボデーにアースしてなる自
動車内照明用螢光灯の点灯装置。In a lighting device for a fluorescent lamp for interior lighting in a car, in which a high voltage is generated on the secondary side of an oscillation transformer by oscillation of an oscillation transistor, and a fluorescent tube is lit by this high voltage, the primary winding of the oscillation transformer and , while connecting the filament preheating winding of the fluorescent tube on the secondary side of the oscillation transformer,
These are connected to the common terminal of the body changeover switch, and the on terminal of the body changeover switch and the reflector of the fluorescent lamp body are connected to ground to the body of the automobile, and further, the door of the body changeover switch is connected. This lighting device for a fluorescent lamp for interior lighting of a car is constructed by grounding one terminal to the car body via a door switch and also grounding the negative side of the car battery power source to the car body.
JP57019241A 1982-02-08 1982-02-08 Lighting device of illuminating fluorescent lamp in automobile Pending JPS58136532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57019241A JPS58136532A (en) 1982-02-08 1982-02-08 Lighting device of illuminating fluorescent lamp in automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57019241A JPS58136532A (en) 1982-02-08 1982-02-08 Lighting device of illuminating fluorescent lamp in automobile

Publications (1)

Publication Number Publication Date
JPS58136532A true JPS58136532A (en) 1983-08-13

Family

ID=11993897

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57019241A Pending JPS58136532A (en) 1982-02-08 1982-02-08 Lighting device of illuminating fluorescent lamp in automobile

Country Status (1)

Country Link
JP (1) JPS58136532A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03118840U (en) * 1990-03-15 1991-12-09
JPH03118839U (en) * 1990-03-15 1991-12-09

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS471708U (en) * 1971-01-21 1972-08-19
JPS507376A (en) * 1973-05-23 1975-01-25
JPS5733042A (en) * 1980-08-08 1982-02-23 Ichikoh Ind Ltd Control circuit for car room light

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS471708U (en) * 1971-01-21 1972-08-19
JPS507376A (en) * 1973-05-23 1975-01-25
JPS5733042A (en) * 1980-08-08 1982-02-23 Ichikoh Ind Ltd Control circuit for car room light

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03118840U (en) * 1990-03-15 1991-12-09
JPH03118839U (en) * 1990-03-15 1991-12-09

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