TWI554151B - LED lamp lighting device and LED lamp lighting device control method - Google Patents

LED lamp lighting device and LED lamp lighting device control method Download PDF

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TWI554151B
TWI554151B TW103105123A TW103105123A TWI554151B TW I554151 B TWI554151 B TW I554151B TW 103105123 A TW103105123 A TW 103105123A TW 103105123 A TW103105123 A TW 103105123A TW I554151 B TWI554151 B TW I554151B
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lamp
circuit
external terminal
lighting device
led
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TW103105123A
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TW201442568A (en
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Toyotaka Takashima
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Shindengen Electric Mfg
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices

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  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Description

LED燈點燈裝置及LED燈點燈裝置之控制方法 LED lamp lighting device and LED lamp lighting device control method 發明領域 Field of invention

本發明是有關於LED燈點燈裝置及LED燈點燈裝置之控制方法。 The present invention relates to a control method of an LED lamp lighting device and an LED lamp lighting device.

發明背景 Background of the invention

一般而言，LED(Light Emitting Diode)燈能以低電壓來驅動，與白熾燈(燈泡燈)等相比之下具有長壽命、低消耗電力、快速之反應速度、及耐衝撃性，可謀求小型、輕量化。 In general, an LED (Light Emitting Diode) lamp can be driven at a low voltage, and has a long life, a low power consumption, a fast reaction speed, and a high-resistance resistance in comparison with an incandescent lamp (bulb lamp). Small and lightweight.

因此，LED燈適合用於例如車輛之頭燈等。 Therefore, the LED lamp is suitable for use in, for example, a headlight of a vehicle or the like.

作為如此之LED燈之驅動裝置之一例，舉例來說有如日本特開2012-160413號公報顯示之LED點燈控制裝置。 An example of such a driving device for an LED lamp is an LED lighting control device as disclosed in Japanese Laid-Open Patent Publication No. 2012-160413.

於該日本特開2012-160413號公報記載之LED點燈控制裝置是以簡單之電路構成來檢測LED開路錯誤，可決定不發生LED開路錯誤之LED電壓。 The LED lighting control device described in Japanese Laid-Open Patent Publication No. 2012-160413 uses a simple circuit configuration to detect an LED open error, and can determine an LED voltage in which an LED open error does not occur.

然而，如上述之日本特開2012-160413號公報之LED點燈控制裝置般地將串聯連接之複數個LED燈以1個驅動電路來驅動的情況下，有若任何1個LED燈破壞(斷線) 則全部的LED燈熄燈之問題。而且，上述之日本特開2012-160413號公報之LED點燈控制裝置是無法進行與習知之一般之燈泡燈點燈裝置同樣之動作。 However, when a plurality of LED lamps connected in series are driven by one drive circuit as in the LED lighting control device of Japanese Laid-Open Patent Publication No. 2012-160413, any one of the LED lamps is broken (broken). line) Then all the LED lights are off. Further, the LED lighting control device of the above-mentioned Japanese Laid-Open Patent Publication No. 2012-160413 is not capable of performing the same operation as the conventional general-purpose lamp lighting device.

發明概要 Summary of invention

遵循與本發明之一態樣相關之實施例之LED燈點燈裝置是連接於燈驅動電源之低電位側之第1電源端子與高電位側之第2電源端子之間、自前述燈驅動電源接受驅動電流之供給、將藉由前述驅動電流而串聯地連接之複數個LED燈予以點燈之LED燈點燈裝置，其特徵在於包含：第1外部端子，連接前述第1電源端子；第2外部端子，連接前述第2電源端子；第1燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接前述第1外部端子；第2燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接前述第1燈電路之另一端；第3燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接前述第2燈電路之另一端，另一端連接前述第2外部端子；第1開關電路，只導通第1基準節點和連接前述第1外部端子之第1接點之間、或是前述第1基準節點和連接前述第1燈電路之另一端之第2接點之間之其中一者； 第2開關電路，只導通連接前述第1燈電路之另一端之第2基準節點和連接前述第1基準節點之第3接點之間、或是前述第2基準節點和第4接點之間之其中一者；第3開關電路，只導通連接前述第1基準節點之第3基準節點和連接前述第2外部端子之第5接點之間、前述第3基準節點和第6接點之間、或是前述第3基準節點和連接前述第2燈電路之另一端之第7接點之間之其中一者；二極體，陰極連接第2燈電路之另一端，陽極連接前述第4接點；開關元件，一端連接前述第4接點，另一端連接前述第2外部端子；開關控制電路，因應前述第4接點與前述第2外部端子之間之電位差而控制前述開關元件；前述開關控制電路是當前述第4接點與前述第2外部端子之間之電位差之大小在預先設定之基準電壓以上的情況下將前述開關元件開啟，當前述第4接點與前述第2外部端子之間之電位差之大小低於前述基準電壓的情況下將前述開關元件關閉。 An LED lamp lighting device according to an embodiment relating to one aspect of the present invention is connected between a first power supply terminal on a low potential side of a lamp driving power source and a second power supply terminal on a high potential side, from the lamp driving power source. An LED lamp lighting device that receives a supply of a driving current and turns on a plurality of LED lamps connected in series by the driving current, and includes: a first external terminal that connects the first power supply terminal; and a second The external terminal is connected to the second power supply terminal; the first lamp circuit is composed of one LED lamp or a plurality of LED lamps connected in series, one end is connected to the first external terminal; and the second lamp circuit is connected to one LED lamp. Or a plurality of LED lamps connected in series, one end of which is connected to the other end of the first lamp circuit; and the third lamp circuit is composed of one LED lamp or a plurality of LED lamps connected in series, and one end is connected to the second one. The other end of the lamp circuit is connected to the second external terminal; the first switch circuit is only between the first reference node and the first contact connecting the first external terminal, or the first reference node and the connection. The aforementioned first lamp One of the 2nd contacts at the other end of the road; The second switching circuit is only between the second reference node connected to the other end of the first lamp circuit and the third contact connected to the first reference node, or between the second reference node and the fourth contact One of the third switching circuits is connected between the third reference node that connects the first reference node and the fifth contact that connects the second external terminal, and between the third reference node and the sixth contact point. Or one of the third reference node and the seventh contact connecting the other end of the second lamp circuit; the diode is connected to the other end of the second lamp circuit, and the anode is connected to the fourth connection. a switching element having one end connected to the fourth contact and the other end connected to the second external terminal; and a switch control circuit controlling the switching element in response to a potential difference between the fourth contact and the second external terminal; The control circuit turns on the switching element when the magnitude of the potential difference between the fourth contact and the second external terminal is equal to or greater than a predetermined reference voltage, and the fourth contact and the second external terminal Potential The case where the size is below the reference voltage of the switching element will be turned off.

在前述LED燈點燈裝置中，藉由前述第1外部端子與前述第2外部端子之間短路，前述第1燈電路、前述第2燈電路、及前述第3燈電路熄燈。 In the LED lamp lighting device described above, the first lamp circuit, the second lamp circuit, and the third lamp circuit are turned off by a short circuit between the first external terminal and the second external terminal.

在前述LED燈點燈裝置中，前述開關元件是陰極連接前述第4接點、陽極連接前述第2外部端子之閘流體。 In the above LED lamp lighting device, the switching element is a thyristor in which a cathode is connected to the fourth contact and an anode is connected to the second external terminal.

在前述LED燈點燈裝置中，前述開關控制電路具有：第1電阻，一端連接前述第4接點，另一端連接前述閘流體之閘；第2電阻，一端連接前述第1電阻之另一端；齊納二極體，陽極連接前述第2電阻之另一端，陰極連接前述第2外部端子。 In the above LED lamp lighting device, the switch control circuit has a first resistor, one end of which is connected to the fourth contact, and the other end of which is connected to the gate of the thyristor; and the second resistor has one end connected to the other end of the first resistor; The Zener diode has an anode connected to the other end of the second resistor, and a cathode is connected to the second external terminal.

在前述LED燈點燈裝置中，前述燈驅動電源具有：第1輸入端子，連接交流發電機之一端；第2輸入端子，連接前述交流發電機之另一端；電源用開關元件，一端連接前述第1輸入端子，另一端連接前述第1電源端子；電容器，一端連接前述電源用開關元件之另一端，另一端連接前述第2輸入端子；檢測電阻，一端連接前述第2輸入端子，另一端連接前述第2電源端子；驅動控制電路，在電流流至前述檢測電阻的情況下，以流至前述檢測電阻之電流成為一定的方式控制前述電源用開關元件，另一方面，在電流不流至前述檢測電阻的情況下，以前述第1電源端子與前述第2電源端子之間之電壓成為預先設定之規定電壓的方式控制前述電源用開關元件。 In the LED lamp lighting device, the lamp driving power source has a first input terminal connected to one end of the alternator, a second input terminal connected to the other end of the alternator, and a power supply switching element connected to the first end. One input terminal is connected to the other end of the first power supply terminal; the other end of the capacitor is connected to the other end of the power supply switching element, and the other end is connected to the second input terminal; the detecting resistor is connected to the second input terminal at one end and the other end is connected to the other end. The second power supply terminal and the drive control circuit control the power supply switching element such that the current flowing to the detection resistor becomes constant when current flows to the detection resistor, and the current does not flow to the detection. In the case of the resistor, the power supply switching element is controlled such that the voltage between the first power supply terminal and the second power supply terminal is a predetermined voltage set in advance.

在前述LED燈點燈裝置中，前述電源用開關元件是陰極連接前述第1輸入端子、陽極連接前述第1電源端子、於閘自前述驅動控制電路輸入控制訊號之閘流體。 In the above-described LED lamp lighting device, the power supply switching element is a gate fluid in which a cathode is connected to the first input terminal, an anode is connected to the first power supply terminal, and a control signal is input from the drive control circuit.

在前述LED燈點燈裝置中，前述燈驅動電源是具有定電壓控制機能與定電流控制機能而構成；在使電流流至前述第1燈電路、第2燈電路、及前述第3燈電路中之任一者之LED燈的情況下，藉由前述定電流控制機能將定 電流流至前述LED燈；在不使電流流至前述第1燈電路、第2燈電路、及前述第3燈電路中之任一LED燈的情況下，藉由前述定電壓控制機能，使朝前述第1電源端子與前述第2電源端子之間輸出之輸出電壓上昇至預先設定之規定電壓而限制於一定之電壓。 In the LED lamp lighting device, the lamp driving power source is configured to have a constant voltage control function and a constant current control function, and to cause a current to flow into the first lamp circuit, the second lamp circuit, and the third lamp circuit. In the case of any of the LED lamps, the predetermined current control function a current flows to the LED lamp; and when no current is supplied to any one of the first lamp circuit, the second lamp circuit, and the third lamp circuit, the constant voltage control function is used to The output voltage outputted between the first power supply terminal and the second power supply terminal rises to a predetermined voltage set in advance and is limited to a constant voltage.

在前述LED燈點燈裝置中，前述第1燈電路之前述一端是前述第1燈電路之前述LED燈之陰極側，前述第1燈電路之前述另一端是前述第1燈電路之前述LED燈之陽極側，前述第2燈電路之前述一端是前述第2燈電路之前述LED燈之陰極側，前述第2燈電路之前述另一端是前述第2燈電路之前述LED燈之陽極側，前述第3燈電路之前述一端是前述第3燈電路之前述LED燈之陰極側，前述第3燈電路之前述另一端是前述第3燈電路之前述LED燈之陽極側。 In the above LED lamp lighting device, the one end of the first lamp circuit is the cathode side of the LED lamp of the first lamp circuit, and the other end of the first lamp circuit is the LED lamp of the first lamp circuit On the anode side, the one end of the second lamp circuit is the cathode side of the LED lamp of the second lamp circuit, and the other end of the second lamp circuit is the anode side of the LED lamp of the second lamp circuit, The one end of the third lamp circuit is the cathode side of the LED lamp of the third lamp circuit, and the other end of the third lamp circuit is the anode side of the LED lamp of the third lamp circuit.

在前述LED燈點燈裝置中，前述第1開關電路、前述第2開關電路、及前述第3開關電路是由使用者以手動控制。 In the LED lamp lighting device described above, the first switching circuit, the second switching circuit, and the third switching circuit are manually controlled by a user.

在前述LED燈點燈裝置中，前述第1燈電路之LED燈是車輛之頭燈之高光束用燈，前述第2燈電路之LED燈是前述頭燈之低光束用燈，前述第3燈電路之LED燈是前述車輛之車寬燈(position lamp)。 In the LED lamp lighting device, the LED lamp of the first lamp circuit is a high beam lamp for a headlight of a vehicle, and the LED lamp of the second lamp circuit is a low beam lamp for the headlight, and the third lamp The LED lamp of the circuit is the position lamp of the aforementioned vehicle.

與本發明之一態樣相關之LED燈點燈裝置之控制方法，該LED燈點燈裝置是連接於燈驅動電源之低電位側之第1電源端子與高電位側之第2電源端子之間、自前述 燈驅動電源接受驅動電流之供給、將藉由前述驅動電流而串聯地連接之複數個LED燈予以點燈之LED燈點燈裝置；該LED燈點燈裝置包含：第1外部端子，連接前述第1電源端子；第2外部端子，連接前述第2電源端子；第1燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接前述第1外部端子；第2燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接前述第1燈電路之另一端；第3燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接前述第2燈電路之另一端，另一端連接前述第2外部端子；第1開關電路，只導通第1基準節點和連接前述第1外部端子之第1接點之間、或是前述第1基準節點和連接前述第1燈電路之另一端之第2接點之間之其中一者；第2開關電路，只導通連接前述第1燈電路之另一端之第2基準節點和連接前述第1基準節點之第3接點之間、或是前述第2基準節點和第4接點之間之其中一者；第3開關電路，只導通連接前述第1基準節點之第3基準節點和連接前述第2外部端子之第5接點之間、前述第3基準節點和第6接點之間、或是前述第3基準節點和連接前述第2燈電路之另一端之第7接點之間之其中一者；二極體，陰極連接第2燈電路之另一端，陽極連接前述第4接點；開關元件，一端連接前述第4接點，另一端連接前述第2外部端子；開關控制電路，因應前述第4接點與前述第2外部端子之間之電位差而控制前述開關元件；該LED燈點燈裝置之控制方法之特徵在於： 前述第4接點與前述第2外部端子之間之電位差之大小在預先設定之基準電壓以上的情況下將前述開關元件開啟，前述第4接點與前述第2外部端子之間之電位差之大小低於前述基準電壓的情況下將前述開關元件關閉。 A method of controlling an LED lamp lighting device according to an aspect of the present invention, wherein the LED lamp lighting device is connected between a first power supply terminal on a low potential side of a lamp driving power source and a second power supply terminal on a high potential side From the foregoing The lamp driving power source receives a supply of a driving current, and an LED lamp lighting device that lights a plurality of LED lamps connected in series by the driving current; the LED lamp lighting device includes: a first external terminal, and the foregoing a power supply terminal; a second external terminal connected to the second power supply terminal; and a first lamp circuit comprising one LED lamp or a plurality of LED lamps connected in series, one end of which is connected to the first external terminal; and the second lamp circuit One LED lamp or a plurality of LED lamps connected in series, one end connected to the other end of the first lamp circuit; the third lamp circuit is composed of one LED lamp or a plurality of LED lamps connected in series One end is connected to the other end of the second lamp circuit, and the other end is connected to the second external terminal; the first switch circuit is only between the first reference node and the first contact to which the first external terminal is connected, or One of a first reference node and a second contact connected to the other end of the first lamp circuit; and the second switch circuit turns on only the second reference node connected to the other end of the first lamp circuit and connects the aforementioned 3rd of the 1st benchmark node Between the points, or one of the second reference node and the fourth contact; the third switch circuit is only connected to the third reference node of the first reference node and the second external terminal One of the five contacts, between the third reference node and the sixth junction, or between the third reference node and the seventh junction connecting the other end of the second lamp circuit; The cathode is connected to the other end of the second lamp circuit, and the anode is connected to the fourth contact; the switching element has one end connected to the fourth contact and the other end connected to the second external terminal; and a switch control circuit corresponding to the fourth contact The switching element is controlled by a potential difference between the second external terminal and the second external terminal; the control method of the LED lamp lighting device is characterized by: When the magnitude of the potential difference between the fourth contact and the second external terminal is equal to or greater than a predetermined reference voltage, the switching element is turned on, and the potential difference between the fourth contact and the second external terminal is The aforementioned switching element is turned off when the reference voltage is lower than the aforementioned reference voltage.

與本發明之一態樣相關之LED燈點燈裝置是連接於燈驅動電源之低電位側之第1電源端子與高電位側之第2電源端子之間，自燈驅動電源接受驅動電流之供給，將藉由驅動電流而串聯地連接之複數個LED燈予以點燈。LED燈點燈裝置是包含：第1外部端子，連接第1電源端子；第2外部端子，連接第2電源端子；第1燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接第1外部端子；第2燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接第1燈電路之另一端；第3燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接第2燈電路之另一端，另一端連接第2外部端子；第1開關電路，只導通第1基準節點和連接第1外部端子之第1接點之間、或是、第1基準節點和連接第1燈電路之另一端之第2接點之間之其中一者；第2開關電路，只導通連接第1燈電路之另一端之第2基準節點和連接第1基準節點之第3接點之間、或是、第2基準節點和第4接點之間之其中一者；第3開關電路，只導通連接第1基準節點之第3基準接點和連接第2外部端子之第5接點之間、第3基準節點和第6接點之間、或是、第3基準節點和連接第2燈電路 之另一端之第7接點之間之其中一者；二極體，陰極連接第2燈電路之另一端，陽極連接第4接點；開關元件，一端連接第4接點，另一端連接第2外部端子；開關控制電路，因應第4接點與第2外部端子之間之電位差而控制開關元件。 An LED lamp lighting device according to an aspect of the present invention is connected between a first power supply terminal on a low potential side of a lamp driving power source and a second power supply terminal on a high potential side, and receives a supply of driving current from a lamp driving power source. A plurality of LED lamps connected in series by driving current are turned on. The LED lamp lighting device includes a first external terminal connected to the first power supply terminal, a second external terminal connected to the second power supply terminal, and a first lamp circuit connected by a single LED lamp or a plurality of LED lamps connected in series. The first lamp terminal is connected to one end, and the second lamp circuit is composed of one LED lamp or a plurality of LED lamps connected in series, one end is connected to the other end of the first lamp circuit, and the third lamp circuit is connected to one LED. The lamp is composed of a plurality of LED lamps connected in series, one end is connected to the other end of the second lamp circuit, and the other end is connected to the second external terminal; the first switch circuit is only connected to the first reference node and the first external terminal. Between 1 contact, or between the first reference node and the second contact connecting the other end of the first lamp circuit; the second switch circuit is only connected to the other end of the first lamp circuit. One of the second reference node and the third contact connected to the first reference node, or one of the second reference node and the fourth contact; the third switch circuit is only connected to the first reference node. The third reference node and the fifth reference point connecting the second external terminal and the third reference node And the sixth junction, or the third reference node and the second lamp circuit One of the seventh contacts at the other end; the diode is connected to the other end of the second lamp circuit, and the anode is connected to the fourth contact; the switching element has one end connected to the fourth contact and the other end connected 2 external terminal; the switch control circuit controls the switching element in response to a potential difference between the fourth contact and the second external terminal.

而且，開關控制電路是當第4接點與第2外部端子之間之電位差之大小在預先設定之基準電壓以上的情況下將開關元件開啟，當第4接點與第2外部端子之間之電位差之大小低於基準電壓的情況下將開關元件關閉。 Further, the switch control circuit turns on the switching element when the magnitude of the potential difference between the fourth contact and the second external terminal is equal to or greater than a predetermined reference voltage, and between the fourth contact and the second external terminal When the magnitude of the potential difference is lower than the reference voltage, the switching element is turned off.

藉此，與本發明相關之LED燈點燈裝置成為可進行與習知之一般之燈泡燈點燈裝置同等之動作。 Accordingly, the LED lamp lighting device according to the present invention can perform the same operation as the conventional general lamp lamp lighting device.

10‧‧‧燈驅動電源 10‧‧‧Lighting power supply

100‧‧‧LED燈點燈裝置 100‧‧‧LED lamp lighting device

G1‧‧‧開關控制電路 G1‧‧‧Switch Control Circuit

CON‧‧‧驅動控制電路 CON‧‧‧Drive Control Circuit

CX‧‧‧電容器 CX‧‧‧ capacitor

D‧‧‧二極體 D‧‧‧ diode

G‧‧‧交流發電機 G‧‧‧Alternator

G1‧‧‧交流發電機之一端 One end of the G1‧‧‧ alternator

G2‧‧‧交流發電機之另一端 The other end of the G2‧‧‧ alternator

Hi‧‧‧高光束用燈 Hi‧‧‧High beam light

i‧‧‧電流 I‧‧‧current

L1‧‧‧第1燈電路 L1‧‧‧1st lamp circuit

L2‧‧‧第2燈電路 L2‧‧‧2nd lamp circuit

L3‧‧‧第3燈電路 L3‧‧‧3rd lamp circuit

Lo‧‧‧低光束用燈 Lo‧‧‧Low beam light

NB1‧‧‧第1基準節點 NB1‧‧‧1st reference node

NB2‧‧‧第2基準節點 NB2‧‧‧2nd reference node

NB3‧‧‧第3基準節點 NB3‧‧‧3rd reference node

NS1‧‧‧第1接點 NS1‧‧‧1st joint

NS2‧‧‧第2接點 NS2‧‧‧2nd contact

NS3‧‧‧第3接點 NS3‧‧‧3rd junction

NS4‧‧‧第4接點 NS4‧‧‧4th junction

NS5‧‧‧第5接點 NS5‧‧‧5th joint

NS6‧‧‧第6接點 NS6‧‧‧6th joint

NS7‧‧‧第7接點 NS7‧‧‧7th junction

Po‧‧‧車寬燈 Po‧‧‧Car width lamp

R1‧‧‧第1電阻 R1‧‧‧1st resistor

R2‧‧‧第2電阻 R2‧‧‧2nd resistor

RX‧‧‧檢測電阻 RX‧‧‧ Sense resistor

SW1‧‧‧第1開關電路 SW1‧‧‧1st switch circuit

SW2‧‧‧第2開關電路 SW2‧‧‧2nd switch circuit

SW3‧‧‧第3開關電路 SW3‧‧‧3rd switch circuit

SCR‧‧‧開關元件 SCR‧‧‧ switching components

Ta1‧‧‧第1外部端子 Ta1‧‧‧1st external terminal

Ta2‧‧‧第2外部端子 Ta2‧‧‧2nd external terminal

TI1‧‧‧第1輸入端子 TI1‧‧‧1st input terminal

TS1‧‧‧第1電源端子 TS1‧‧‧1st power terminal

TS2‧‧‧第2電源端子 TS2‧‧‧2nd power terminal

VA‧‧‧交流電壓 VA‧‧‧AC voltage

X‧‧‧電源用開關元件 X‧‧‧Power supply switching elements

Ze‧‧‧齊納二極體 Ze‧‧‧Zina diode

圖1是顯示與作為本發明之一態樣之實施例1相關之LED燈點燈裝置之構成之一例的電路圖。 Fig. 1 is a circuit diagram showing an example of a configuration of an LED lamp lighting device according to a first embodiment of the present invention.

圖2是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作之例的電路圖。 Fig. 2 is a circuit diagram showing an example of an operation in the normal operation of the LED lamp of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 in the case where the LED lamp is not malfunctioning.

圖3是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作之例的電路圖。 3 is a circuit diagram showing an example of an operation in the normal operation of the LED lamp of the lamp lighting device 100 according to the first embodiment shown in FIG.

圖4是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作之例的電路圖。 4 is a circuit diagram showing an example of an operation in the normal operation of the LED lamp of the lamp lighting device 100 according to the first embodiment shown in FIG.

圖5是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作之例的電路圖。 Fig. 5 is a circuit diagram showing an example of an operation in the normal operation in which the LED lamp of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is not malfunctioning.

圖6是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作之例的電路圖。 Fig. 6 is a circuit diagram showing an example of an operation in the normal operation in which the LED lamp of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is not malfunctioning.

圖7是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作之例的電路圖。 Fig. 7 is a circuit diagram showing an example of an operation in the normal operation of the LED lamp of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 in which the LED lamp is not malfunctioning.

圖8是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作之例的電路圖。 Fig. 8 is a circuit diagram showing an example of an operation in the normal operation of the LED lamp of the lamp lighting apparatus 100 according to the first embodiment shown in Fig. 1 in the case where the LED lamp is not malfunctioning.

圖9是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作之例的電路圖。 FIG. 9 is a circuit diagram showing an example of an operation in the normal operation of the LED lamp of the lamp lighting apparatus 100 according to the first embodiment shown in FIG.

圖10是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作之例的電路圖。 Fig. 10 is a circuit diagram showing an example of an operation in the normal operation of the LED lamp of the lamp lighting apparatus 100 according to the first embodiment shown in Fig. 1 in the case where the LED lamp is not malfunctioning.

圖11是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作之例的電路圖。 Fig. 11 is a circuit diagram showing an example of the operation of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 in the normal operation of the LED lamp without failure.

圖12是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作之例的電路圖。 Fig. 12 is a circuit diagram showing an example of an operation in the normal operation of the LED lamp of the lamp lighting apparatus 100 according to the first embodiment shown in Fig. 1 in the case where the LED lamp is not malfunctioning.

圖13是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作之例的電路圖。 Fig. 13 is a circuit diagram showing an example of an operation in the normal operation of the LED lamp of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 in the case where the LED lamp is not malfunctioning.

圖14是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作之例的電路圖。 Fig. 14 is a circuit diagram showing an example of the operation in the case where the vehicle width lamp Po of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is malfunctioning.

圖15是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作之例的電路圖。 Fig. 15 is a circuit diagram showing an example of an operation in the case where the vehicle width lamp Po of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is malfunctioning.

圖16是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作之例的電路圖。 Fig. 16 is a circuit diagram showing an example of the operation in the case where the vehicle width lamp Po of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is malfunctioning.

圖17是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作之例的電路圖。 Fig. 17 is a circuit diagram showing an example of the operation in the case where the vehicle width lamp Po of the lamp lighting apparatus 100 according to the first embodiment shown in Fig. 1 is malfunctioning.

圖18是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作之例的電路圖。 Fig. 18 is a circuit diagram showing an example of the operation in the case where the vehicle width lamp Po of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is malfunctioning.

圖19是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作之例的電路圖。 Fig. 19 is a circuit diagram showing an example of the operation in the case where the vehicle width lamp Po of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is malfunctioning.

圖20是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作之例的電路圖。 Fig. 20 is a circuit diagram showing an example of the operation in the case where the vehicle width lamp Po of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is malfunctioning.

圖21是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作之例的電路圖。 Fig. 21 is a circuit diagram showing an example of the operation in the case where the vehicle width lamp Po of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is malfunctioning.

圖22是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作之例的電路圖。 Fig. 22 is a circuit diagram showing an example of the operation in the case where the vehicle width lamp Po of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is malfunctioning.

圖23是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作之例的電路圖。 Fig. 23 is a circuit diagram showing an example of the operation in the case where the vehicle width lamp Po of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is malfunctioning.

圖24是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作之例的電路圖。 Fig. 24 is a circuit diagram showing an example of the operation in the case where the vehicle width lamp Po of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is malfunctioning.

圖25是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作之例的電路圖。 Fig. 25 is a circuit diagram showing an example of an operation in the case where the vehicle width lamp Po of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is malfunctioning.

圖26是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之低光束用燈Lo故障之情況下之動作之例的電路圖。 Fig. 26 is a circuit diagram showing an example of the operation in the case where the low beam lamp Lo of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖27是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之低光束用燈Lo故障之情況下之動作之例的電路圖。 Fig. 27 is a circuit diagram showing an example of the operation in the case where the low beam lamp Lo of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖28是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之低光束用燈Lo故障之情況下之動作之例的電路圖。 Fig. 28 is a circuit diagram showing an example of the operation in the case where the low beam lamp Lo of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖29是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之低光束用燈Lo故障之情況下之動作之例的電路圖。 Fig. 29 is a circuit diagram showing an example of the operation in the case where the low beam lamp Lo of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖30是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之低光束用燈Lo故障之情況下之動作之例的電路圖。 Fig. 30 is a circuit diagram showing an example of the operation in the case where the low beam lamp Lo of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖31是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之低光束用燈Lo故障之情況下之動作之例的電路圖。 Fig. 31 is a circuit diagram showing an example of the operation in the case where the low beam lamp Lo of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖32是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之低光束用燈Lo故障之情況下之動作之例的電路圖。 Fig. 32 is a circuit diagram showing an example of the operation in the case where the low beam lamp Lo of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖33是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之低光束用燈Lo故障之情況下之動作之例的電路圖。 Fig. 33 is a circuit diagram showing an example of the operation in the case where the low beam lamp Lo of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖34是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之低光束用燈Lo故障之情況下之動作之例的電路圖。 Fig. 34 is a circuit diagram showing an example of the operation in the case where the low beam lamp Lo of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖35是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之低光束用燈Lo故障之情況下之動作之例的電路圖。 Fig. 35 is a circuit diagram showing an example of the operation in the case where the low beam lamp Lo of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖36是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之低光束用燈Lo故障之情況下之動作之例的電路圖。 Fig. 36 is a circuit diagram showing an example of the operation in the case where the low beam lamp Lo of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖37是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之低光束用燈Lo故障之情況下之動作之例的電路圖。 Fig. 37 is a circuit diagram showing an example of the operation in the case where the low beam lamp Lo of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖38是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作之例的電路圖。 Fig. 38 is a circuit diagram showing an example of the operation in the case where the high beam lamp Hi of the lamp lighting apparatus 100 according to the first embodiment shown in Fig. 1 fails.

圖39是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作之例的電路圖。 Fig. 39 is a circuit diagram showing an example of the operation in the case where the high beam lamp Hi of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖40是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作之例的電路圖。 Fig. 40 is a circuit diagram showing an example of the operation in the case where the high beam lamp Hi of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖41是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作之例的電路圖。 Fig. 41 is a circuit diagram showing an example of the operation in the case where the high beam lamp Hi of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖42是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作之例的電路圖。 Fig. 42 is a circuit diagram showing an example of the operation in the case where the high beam lamp Hi of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖43是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作之例的電路圖。 Fig. 43 is a circuit diagram showing an example of the operation in the case where the high beam lamp Hi of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖44是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作之例的電路圖。 Fig. 44 is a circuit diagram showing an example of the operation in the case where the high beam lamp Hi of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖45是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作之例的電路圖。 Fig. 45 is a circuit diagram showing an example of the operation in the case where the high beam lamp Hi of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖46是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作之例的電路圖。 Fig. 46 is a circuit diagram showing an example of the operation in the case where the high beam lamp Hi of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖47是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作之例的電路圖。 Fig. 47 is a circuit diagram showing an example of the operation in the case where the high beam lamp Hi of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖48是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作之例的電路圖。 Fig. 48 is a circuit diagram showing an example of the operation in the case where the high beam lamp Hi of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

圖49是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作之例的電路圖。 Fig. 49 is a circuit diagram showing an example of the operation in the case where the high beam lamp Hi of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

用以實施發明之形態 Form for implementing the invention

以下，基於圖面來說明與本發明相關之各實施例。 Hereinafter, various embodiments related to the present invention will be described based on the drawings.

實施例1 Example 1

圖1是顯示與作為本發明之一態樣之實施例1相關之LED燈點燈裝置之構成之一例的電路圖。於該圖1顯示之例是例如車輛之頭燈之例。 Fig. 1 is a circuit diagram showing an example of a configuration of an LED lamp lighting device according to a first embodiment of the present invention. An example shown in Fig. 1 is an example of a headlight of a vehicle.

如圖1所示，LED燈點燈裝置100是連接燈驅動電源10。該燈驅動電源10是連接交流發電機G。 As shown in FIG. 1, the LED lamp lighting device 100 is connected to the lamp driving power source 10. The lamp driving power source 10 is connected to the alternator G.

在此，交流發電機G是單相交流發電機，舉例來說，與車輛等之引擎連動而旋轉，藉此以交流來發電。 Here, the alternator G is a single-phase alternator, and for example, rotates in conjunction with an engine such as a vehicle to generate electric power by alternating current.

該交流發電機G之一端G1是與燈驅動電源10之第1輸入端子TI1連接，另一端G2是接地。交流發電機G是將發電出之交流電壓VA朝燈驅動電源10輸出。 One end G1 of the alternator G is connected to the first input terminal TI1 of the lamp driving power source 10, and the other end G2 is grounded. The alternator G outputs the generated AC voltage VA to the lamp driving power source 10.

而且，燈驅動電源10之負電壓側(低電位側)之第1電源端子TS1是連接LED燈點燈裝置100之外部端子Ta1，燈驅動電源10之正電壓側(高電位側)之第2電源端子TS2是連接LED燈點燈裝置100之外部端子Ta2。而且，該燈驅動電源10是將LED燈之驅動電流朝LED燈點燈裝置100供給。 Further, the first power supply terminal TS1 on the negative voltage side (low potential side) of the lamp driving power supply 10 is connected to the external terminal Ta1 of the LED lamp lighting device 100, and the second side of the positive voltage side (high potential side) of the lamp driving power supply 10 The power supply terminal TS2 is an external terminal Ta2 that connects the LED lamp lighting device 100. Further, the lamp driving power source 10 supplies the driving current of the LED lamp to the LED lamp lighting device 100.

亦即，LED燈點燈裝置100是連接於燈驅動電源10之低電位側之第1電源端子TS1與高電位側之第2電源端子TS2之間，自燈驅動電源10接受驅動電流之供給，將藉由該驅動電流而串聯地連接之複數個LED燈予以點燈。 In other words, the LED lamp lighting device 100 is connected between the first power supply terminal TS1 on the low potential side of the lamp driving power source 10 and the second power supply terminal TS2 on the high potential side, and receives the supply of the driving current from the lamp driving power source 10. A plurality of LED lamps connected in series by the drive current are turned on.

該LED燈點燈裝置100舉例來說是如圖1所示，具有第1外部端子Ta1、第2外部端子Ta2、第1燈電路L1、第2燈電路L2、第3燈電路L3、第1開關電路SW1、第2開關電路SW2、第3開關電路SW3、開關元件SCR、二極體D、開關控制電路C1。 As shown in FIG. 1, the LED lamp lighting device 100 includes, for example, a first external terminal Ta1, a second external terminal Ta2, a first lamp circuit L1, a second lamp circuit L2, a third lamp circuit L3, and a first The switch circuit SW1, the second switch circuit SW2, the third switch circuit SW3, the switching element SCR, the diode D, and the switch control circuit C1.

第1外部端子Ta1是與第1電源端子TS1連接。 The first external terminal Ta1 is connected to the first power supply terminal TS1.

第2外部端子Ta2是與第2電源端子TS2連接。 The second external terminal Ta2 is connected to the second power supply terminal TS2.

第1燈電路L1是以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接第1外部端子Ta1。在圖1之 例，第1燈電路L1是2個LED燈串聯地連接而構成。 The first lamp circuit L1 is composed of one LED lamp or a plurality of LED lamps connected in series, and one end is connected to the first external terminal Ta1. In Figure 1 For example, the first lamp circuit L1 is configured by connecting two LED lamps in series.

附帶一提，如圖1所示，第1燈電路L1之一端是第1燈電路L1之LED燈之陰極側。另外，第1燈電路L1之另一端是第1燈電路L1之LED燈之陽極側。 Incidentally, as shown in FIG. 1, one end of the first lamp circuit L1 is the cathode side of the LED lamp of the first lamp circuit L1. Further, the other end of the first lamp circuit L1 is the anode side of the LED lamp of the first lamp circuit L1.

該第1燈電路L1之LED燈舉例來說是車輛之頭燈之高光束用燈(例如行進用之前照燈)Hi。 The LED lamp of the first lamp circuit L1 is, for example, a high beam lamp (for example, a running headlight) Hi of a headlight of a vehicle.

第2燈電路L2是以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接第1燈電路L1之另一端。在圖1之例，第2燈電路L2是2個LED燈串聯地連接而構成。 The second lamp circuit L2 is composed of one LED lamp or a plurality of LED lamps connected in series, and one end is connected to the other end of the first lamp circuit L1. In the example of Fig. 1, the second lamp circuit L2 is configured by connecting two LED lamps in series.

附帶一提，如圖1所示，第2燈電路L2之一端是第2燈電路L2之LED燈之陰極側。另外，第2燈電路L2之另一端是第2燈電路L2之LED燈之陽極側。 Incidentally, as shown in FIG. 1, one end of the second lamp circuit L2 is the cathode side of the LED lamp of the second lamp circuit L2. Further, the other end of the second lamp circuit L2 is the anode side of the LED lamp of the second lamp circuit L2.

該第2燈電路L2之LED燈舉例來說是該頭燈之低光束用燈(例如迎面而來用之前照燈)Lo。 The LED lamp of the second lamp circuit L2 is, for example, a low beam lamp (for example, a headlight for headlights) Lo of the head lamp.

第3燈電路L3是以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接第2燈電路L2之另一端，另一端連接第2外部端子Ta2。在圖1之例，第3燈電路L3是以1個LED燈構成。 The third lamp circuit L3 is composed of one LED lamp or a plurality of LED lamps connected in series, one end of which is connected to the other end of the second lamp circuit L2, and the other end of which is connected to the second external terminal Ta2. In the example of Fig. 1, the third lamp circuit L3 is constituted by one LED lamp.

附帶一提，如圖1所示，第3燈電路L3之一端是第3燈電路L3之LED燈之陰極側。另外，第3燈電路L3之另一端是第3燈電路L3之LED燈之陽極側。 Incidentally, as shown in FIG. 1, one end of the third lamp circuit L3 is the cathode side of the LED lamp of the third lamp circuit L3. Further, the other end of the third lamp circuit L3 is the anode side of the LED lamp of the third lamp circuit L3.

該第3燈電路L3之LED燈舉例來說是該車輛之車寬燈Po。 The LED lamp of the third lamp circuit L3 is, for example, the vehicle width lamp Po of the vehicle.

另外，第1開關電路SW1是只導通第1基準節點 NB1和連接第1外部端子Ta1之第1接點NS1之間、或是、第1基準節點NB1和連接第1燈電路L1之另一端之第2接點NS2之間之其中一者。 In addition, the first switch circuit SW1 is only turned on the first reference node One of NB1 and the first contact NS1 connected to the first external terminal Ta1 or between the first reference node NB1 and the second contact NS2 connected to the other end of the first lamp circuit L1.

該第1開關電路SW1是用於使已敘述之車輛之頭燈之高燈點燈(超車燈(passing))之開關。 The first switch circuit SW1 is a switch for lighting a high lamp (passing) of the headlight of the vehicle described.

第2開關電路SW2是只導通連接第1燈電路L1之另一端之第2基準節點NB2和連接第1基準節點NB1之第3接點NS3之間、或是、第2基準節點NB2和第4接點NS4之間之其中一者。 The second switch circuit SW2 is connected between the second reference node NB2 that is connected to the other end of the first lamp circuit L1 and the third contact NS3 that is connected to the first reference node NB1, or the second reference node NB2 and the fourth. One of the contacts between NS4.

該第2開關電路SW2是用於使已敘述之車輛之頭燈之高光束與低光束切換之開關。 The second switch circuit SW2 is a switch for switching the high beam and the low beam of the headlight of the vehicle described.

第3開關電路SW3是只將導通連接第1基準節點NB1之第3基準接點NB3和連接第2外部端子Ta2之第5接點NS5之間、第3基準節點NB3和第6接點NS6之間、或是、第3基準節點NB3和連接第2燈電路L2之另一端之第7接點NS7之間之其中一者。 The third switch circuit SW3 is only between the third reference contact NB3 that is connected to the first reference node NB1 and the fifth contact NS5 that is connected to the second external terminal Ta2, and the third reference node NB3 and the sixth contact NS6. One of either, or between the third reference node NB3 and the seventh contact NS7 connected to the other end of the second lamp circuit L2.

該第3開關電路SW3是用於控制已敘述之車輛之車寬燈之點燈、各燈之點燈或熄燈之開關。 The third switch circuit SW3 is a switch for controlling the lighting of the vehicle width lamp of the vehicle described above, and turning off or turning off the lights of the lamps.

附帶一提，上述第1開關電路SW1、第2開關電路SW2、及第3開關電路SW3是由使用者以手動控制。 Incidentally, the first switch circuit SW1, the second switch circuit SW2, and the third switch circuit SW3 are manually controlled by the user.

另外，二極體D是陰極連接第2燈電路L2之另一端，陽極連接第4接點NS4。 Further, the diode D is connected to the other end of the second lamp circuit L2, and the anode is connected to the fourth contact NS4.

開關元件SCR是一端連接第4接點NS4，另一端連接第2外部端子Ta2。如圖1所示，該開關元件SCR是陰 極連接第4接點NS4、陽極連接第2外部端子Ta2之閘流體。 The switching element SCR has one end connected to the fourth contact NS4 and the other end connected to the second external terminal Ta2. As shown in Figure 1, the switching element SCR is yin The gate is connected to the fourth contact NS4, and the anode is connected to the gate fluid of the second external terminal Ta2.

開關控制電路C1是因應第4接點NS4與第2外部端子Ta2之間之電位差而控制開關元件SCR。 The switch control circuit C1 controls the switching element SCR in response to a potential difference between the fourth contact NS4 and the second external terminal Ta2.

舉例來說，開關控制電路C1是當第4接點NS4(開關元件SCR之一端(陰極))與第2外部端子Ta2之間之電位差之大小(絕對值)在預先設定之基準電壓以上的情況下將開關元件SCR開啟。附帶一提，該基準電壓是以其值之大小(絕對值)來比較(以下相同)。 For example, the switch control circuit C1 is a case where the magnitude (absolute value) of the potential difference between the fourth contact NS4 (one end of the switching element SCR (cathode)) and the second external terminal Ta2 is equal to or greater than a predetermined reference voltage. The switching element SCR is turned on. Incidentally, the reference voltage is compared by the magnitude (absolute value) of its value (the same applies hereinafter).

另一方面，開關控制電路C1是當第4接點NS4(開關元件SCR之一端(陰極))與第2外部端子Ta2之間之電位差之大小(絕對值)低於該基準電壓的情況下將開關元件SCR關閉。 On the other hand, the switch control circuit C1 is when the magnitude (absolute value) of the potential difference between the fourth contact NS4 (one end of the switching element SCR (cathode)) and the second external terminal Ta2 is lower than the reference voltage. The switching element SCR is turned off.

如圖1所示，該開關控制電路C1具有例如第1電阻R1、第2電阻R2、齊納二極體Ze。 As shown in FIG. 1, the switch control circuit C1 has, for example, a first resistor R1, a second resistor R2, and a Zener diode Ze.

第1電阻R1是一端連接第4接點NS4，另一端連接閘流體(開關元件)SCR之閘。 The first resistor R1 is a gate to which the one end is connected to the fourth contact NS4 and the other end is connected to the thyristor (switching element) SCR.

第2電阻R2是一端連接第1電阻R1之另一端。 The second resistor R2 is the other end to which the first resistor R1 is connected at one end.

齊納二極體Ze是陽極連接第2電阻R2之另一端，陰極連接第2外部端子Ta2。 The Zener diode Ze is an anode connected to the other end of the second resistor R2, and the cathode is connected to the second external terminal Ta2.

該開關控制電路C1之構成是藉由第1電阻R1、第2電阻R2、齊納二極體Ze而監視第4接點NS4之電壓。 The switch control circuit C1 is configured to monitor the voltage of the fourth contact NS4 by the first resistor R1, the second resistor R2, and the Zener diode Ze.

亦即，其構成是第4接點與第2外部端子Ta2之間之電位差(絕對值)變得比該基準電壓更大的情況下，齊納二極體Ze導通，電流流至第2電阻R2。 In other words, when the potential difference (absolute value) between the fourth contact and the second external terminal Ta2 becomes larger than the reference voltage, the Zener diode Ze is turned on, and the current flows to the second resistor. R2.

而且，藉由齊納二極體Ze導通、電流流至第2電阻R2，於開關元件(閘流體)SCR之陽極與閘之間產生電壓。藉由該電壓，閘電流流至開關元件SCR之閘而開關元件SCR變開啟。 Further, by the Zener diode Ze being turned on and the current flowing to the second resistor R2, a voltage is generated between the anode of the switching element (thyristor) SCR and the gate. With this voltage, the gate current flows to the gate of the switching element SCR and the switching element SCR is turned on.

附帶一提，該基準電壓可藉由第1電阻R1及第2電阻R2之電阻值、齊納二極體Ze之降伏電壓而設定成希望之值。 Incidentally, the reference voltage can be set to a desired value by the resistance values of the first resistor R1 and the second resistor R2 and the voltage drop of the Zener diode Ze.

在此，如圖1所示，已敘述之燈驅動電源10具有例如第1輸入端子TI1、第2輸入端子TI2、第1電源端子TS1、第2電源端子TS2、電源用開關元件X、電容器CX、檢測電阻RX、驅動控制電路CON。 Here, as shown in FIG. 1, the lamp driving power supply 10 described above has, for example, a first input terminal TI1, a second input terminal TI2, a first power supply terminal TS1, a second power supply terminal TS2, a power supply switching element X, and a capacitor CX. , detection resistor RX, drive control circuit CON.

第1輸入端子TI1是連接交流發電機G之一端G1。 The first input terminal TI1 is connected to one end G1 of the alternator G.

第2輸入端子TI2是透過接地而連接交流發電機G之另一端G2。 The second input terminal TI2 is connected to the other end G2 of the alternator G through the ground.

電源用開關元件X是一端連接第1輸入端子TI1，另一端連接第1電源端子TS1。 The power supply switching element X has one end connected to the first input terminal TI1 and the other end connected to the first power supply terminal TS1.

如圖1所示，該電源用開關元件X舉例來說是陰極連接第1輸入端子TI1、陽極連接第1電源端子TS1、於閘自驅動控制電路CON輸入控制訊號之閘流體。 As shown in FIG. 1, the power supply switching element X is, for example, a cathode connected to the first input terminal TI1, an anode connected to the first power supply terminal TS1, and a gate-driving control signal from the drive control circuit CON.

電容器CX是一端連接電源用開關元件X之另一端，另一端連接第2輸入端子TI2。該電容器CX是平流用電容器(電解電容器)。 The capacitor CX has one end connected to the other end of the power supply switching element X, and the other end of which is connected to the second input terminal TI2. This capacitor CX is a current sharing capacitor (electrolytic capacitor).

檢測電阻RX是一端連接第2輸入端子TI2，另一 端連接第2電源端子TS2。 The detecting resistor RX is connected to the second input terminal TI2 at one end, and the other The second power supply terminal TS2 is connected to the terminal.

驅動控制電路CON是在電流流至檢測電阻RX的情況下，以流至檢測電阻RX之電流成為一定的方式控制電源用開關元件X。 When the current flows to the detection resistor RX, the drive control circuit CON controls the power supply switching element X so that the current flowing to the detection resistor RX becomes constant.

藉此，電源用開關元件(閘流體)X是將交流發電機G輸出之交流電壓VA之負相側之電壓基於驅動控制電路CON之控制予以半波整流，驅動電流供給至LED燈點燈裝置100。另外，電源用開關元件(閘流體)X是於導通期間中將電容器CX充電。該電容器CX是成為用於在電源用開關元件(閘流體)X之非導通期間中將電流供給至LED燈點燈裝置100之整流平滑用電容器。 Thereby, the switching element for the power supply (the thyristor) X is a half-wave rectification of the voltage on the negative phase side of the AC voltage VA output from the alternator G based on the control of the drive control circuit CON, and the drive current is supplied to the LED lamp lighting device. 100. Further, the switching element (gate fluid) X for power supply charges the capacitor CX during the on period. This capacitor CX is a rectifying smoothing capacitor that supplies current to the LED lamp lighting device 100 during the non-conduction period of the power supply switching element (thyristor) X.

亦即，驅動控制電路CON是以流至LED燈點燈裝置100之電流之實效值或平均值成為一定的方式控制電源用開關元件(閘流體)X之導通時序(點火相位)。 In other words, the drive control circuit CON controls the conduction timing (ignition phase) of the switching element (gate fluid) X of the power supply so that the effective value or the average value of the current flowing to the LED lamp lighting device 100 becomes constant.

另一方面，驅動控制電路CON是在電流不流至檢測電阻RX的情況下，以第1電源端子TS1與第2電源端子TS2之間之電位差成為預先設定之規定電壓的方式控制電源用開關元件X。 On the other hand, when the current does not flow to the detection resistor RX, the drive control circuit CON controls the power supply switching element such that the potential difference between the first power supply terminal TS1 and the second power supply terminal TS2 becomes a predetermined voltage set in advance. X.

如以上，燈驅動電源10是具有定電壓控制機能與定電流控制機能而構成。 As described above, the lamp driving power source 10 is configured to have a constant voltage control function and a constant current control function.

亦即，燈驅動電源10是在使電流流至第1燈電路L1、第2燈電路L2、及第3燈電路L3中之任一者之LED燈的情況下，藉由該定電流控制機能將定電流流至LED燈(自第2電源端子TS2輸出一定之電流)。 In other words, when the lamp driving power supply 10 is configured to flow current to the LED lamp of any of the first lamp circuit L1, the second lamp circuit L2, and the third lamp circuit L3, the constant current control function is provided. A constant current flows to the LED lamp (a certain current is output from the second power supply terminal TS2).

附帶一提，在此，使電流流至LED燈的情況是LED燈未故障(導通狀態)的情況。 Incidentally, the case where the current is caused to flow to the LED lamp is a case where the LED lamp is not malfunctioning (on state).

另一方面，燈驅動電源10是在不使電流流至第1燈電路L1、第2燈電路L2、及第3燈電路L3中之任一LED燈(故障狀態)的情況下，藉由該定電壓控制機能，使朝第1電源端子TS1與第2電源端子TS2之間輸出之輸出電壓上昇至預先設定之規定電壓而成為一定之電壓。 On the other hand, when the lamp driving power supply 10 does not cause current to flow to any of the first lamp circuit L1, the second lamp circuit L2, and the third lamp circuit L3 (a failure state), The constant voltage control function increases the output voltage outputted between the first power supply terminal TS1 and the second power supply terminal TS2 to a predetermined voltage set in advance and becomes a constant voltage.

附帶一提，在此，不使電流流至LED燈的情況是LED燈故障(斷線狀態)的情況，是負載開路狀態。 Incidentally, in the case where the current does not flow to the LED lamp, the LED lamp is in a failure state (off state), and the load is in an open state.

在此是針對具有如以上之構成之LED燈點燈裝置100之動作進行說明。 Here, the operation of the LED lamp lighting device 100 having the above configuration will be described.

首先，針對燈點燈裝置100之LED燈未故障之通常動作時之動作進行說明。 First, the operation at the time of normal operation in which the LED lamp of the lamp lighting device 100 is not malfunction will be described.

表1是顯示一般之燈泡燈點燈裝置之各開關之開啟/關閉與各燈泡燈之點燈之關係的表。另外，表2是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之各開關之開啟/關閉與各LED燈之點燈之關係的表。另外，圖2至圖13是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作之例的電路圖。 Table 1 is a table showing the relationship between the opening/closing of the switches of the general lamp lamp lighting device and the lighting of the respective lamp lamps. Further, Table 2 is a table showing the relationship between the opening/closing of the switches of the lamp lighting device 100 and the lighting of the respective LED lamps shown in Fig. 1 . 2 to FIG. 13 are circuit diagrams showing an example of an operation in the normal operation of the LED lamp of the lamp lighting apparatus 100 according to the first embodiment shown in FIG.

舉例來說，在圖2之例，第1開關電路SW1是將第1基準節點NB1和第1接點NS1之間導通。另外，第2開關電路SW2是將第2基準節點NB2和第3接點NS3之間導通。第3開關電路SW3是將第3基準節點NB3和第5接點NS5之間導通。 For example, in the example of FIG. 2, the first switch circuit SW1 is electrically connected between the first reference node NB1 and the first contact NS1. Further, the second switch circuit SW2 is electrically connected between the second reference node NB2 and the third contact NS3. The third switch circuit SW3 is electrically connected between the third reference node NB3 and the fifth contact NS5.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第1開關電路SW1」之路徑流動。亦即，第1外部端子Ta1與第2外部端子Ta2之間短路。藉此，第1至第3燈電路L1~L3是熄燈(表2)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third switching circuit SW3 → the first switching circuit SW1". In other words, the first external terminal Ta1 and the second external terminal Ta2 are short-circuited. Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 2).

接下來，在圖3之例，第1開關電路SW1是將第1基準節點NB1和第2接點NS2之間導通。另外，第2開關電路SW2是將第2基準節點NB2和第3接點NS3之間導通。第3開關電路SW3是將第3基準節點NB3和第5接點NS5之間導通。 Next, in the example of FIG. 3, the first switch circuit SW1 is turned on between the first reference node NB1 and the second contact NS2. Further, the second switch circuit SW2 is electrically connected between the second reference node NB2 and the third contact NS3. The third switch circuit SW3 is electrically connected between the third reference node NB3 and the fifth contact NS5.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第2開關電路SW2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi之合計2燈點燈(表2)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "the third switching circuit SW3 → the second switching circuit SW2 → the first lamp circuit L1". Thereby, the total of the high beam lamp Hi is 2 lamps (Table 2).

接下來，在圖4之例，第1開關電路SW1是將第1基準節點NB1和第1接點NS1之間導通。另外，第2開關電路SW2是將第2基準節點NB2和第4接點NS4之間導通。第3開關電路SW3是將第3基準節點NB3和第5接點NS5之間導通。 Next, in the example of FIG. 4, the first switch circuit SW1 is turned on between the first reference node NB1 and the first contact NS1. Further, the second switch circuit SW2 is electrically connected between the second reference node NB2 and the fourth contact NS4. The third switch circuit SW3 is electrically connected between the third reference node NB3 and the fifth contact NS5.

亦即，由使用者以將超車燈關閉的方式切換第1 開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 That is, the user switches the first mode by turning off the overtaking light. The switch circuit SW1 switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第1燈電路L1」之路徑流動。亦即，第1外部端子Ta1與第2外部端子Ta2之間短路。藉此，第1至第3燈電路L1~L3是熄燈(表2)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third switching circuit SW3 → the first lamp circuit L1". In other words, the first external terminal Ta1 and the second external terminal Ta2 are short-circuited. Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 2).

接下來，在圖5之例，第1開關電路SW1是將第1基準節點NB1和第2接點NS2之間導通。另外，第2開關電路SW2是將第2基準節點NB2和第4接點NS4之間導通。第3開關電路SW3是將第3基準節點NB3和第5接點NS5之間導通。 Next, in the example of FIG. 5, the first switch circuit SW1 is electrically connected between the first reference node NB1 and the second contact NS2. Further, the second switch circuit SW2 is electrically connected between the second reference node NB2 and the fourth contact NS4. The third switch circuit SW3 is electrically connected between the third reference node NB3 and the fifth contact NS5.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第1開關電路SW1→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi之合計2燈點燈(表2)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third switching circuit SW3 → the first switching circuit SW1 → the first lamp circuit L1". Thereby, the total of the high beam lamp Hi is 2 lamps (Table 2).

接下來，在圖6之例，第1開關電路SW1是將第1基準節點NB1和第1接點NS1之間導通。另外，第2開關電路SW2是將第2基準節點NB2和第3接點NS3之間導通。第3開關電路SW3是將第3基準節點NB3和第7接點NS7之間導通。 Next, in the example of FIG. 6, the first switch circuit SW1 is turned on between the first reference node NB1 and the first contact NS1. Further, the second switch circuit SW2 is electrically connected between the second reference node NB2 and the third contact NS3. The third switch circuit SW3 is electrically connected between the third reference node NB3 and the seventh contact NS7.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關 電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 That is, the user switches the first switch circuit SW1 in such a manner that the overtaking lamp is turned off, and switches the second switch in such a manner as to select the low beam lamp Lo. In the circuit SW2, the third switch circuit SW3 is switched in such a manner that the vehicle width lamp Po is turned on.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第3開關電路SW3→第1開關電路SW1」之路徑流動。藉此，車寬燈Po之合計1燈點燈(表2)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third lamp circuit L3 → the third switch circuit SW3 → the first switch circuit SW1". Thereby, the total width of the vehicle width lamp Po is 1 lamp (Table 2).

接下來，在圖7之例，第1開關電路SW1是將第1基準節點NB1和第2接點NS2之間導通。另外，第2開關電路SW2是將第2基準節點NB2和第3接點NS3之間導通。第3開關電路SW3是將第3基準節點NB3和第7接點NS7之間導通。 Next, in the example of FIG. 7, the first switch circuit SW1 is turned on between the first reference node NB1 and the second contact NS2. Further, the second switch circuit SW2 is electrically connected between the second reference node NB2 and the third contact NS3. The third switch circuit SW3 is electrically connected between the third reference node NB3 and the seventh contact NS7.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch by turning on the vehicle width lamp Po. Circuit SW3.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第3開關電路SW3→第2開關電路SW2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi及車寬燈Po之合計3燈點燈(表2)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "the third lamp circuit L3 → the third switch circuit SW3 → the second switch circuit SW2 → the first lamp circuit L1". Thereby, the total of the high beam lamp Hi and the vehicle width lamp Po is 3 lamps (Table 2).

接下來，在圖8之例，第1開關電路SW1是將第1基準節點NB1和第1接點NS1之間導通。另外，第2開關電路SW2是將第2基準節點NB2和第4接點NS4之間導通。第3開關電路SW3是將第3基準節點NB3和第7接點NS7之間導通。 Next, in the example of FIG. 8, the first switch circuit SW1 is turned on between the first reference node NB1 and the first contact NS1. Further, the second switch circuit SW2 is electrically connected between the second reference node NB2 and the fourth contact NS4. The third switch circuit SW3 is electrically connected between the third reference node NB3 and the seventh contact NS7.

亦即，由使用者以將超車燈關閉的方式切換第1 開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 That is, the user switches the first mode by turning off the overtaking light. The switch circuit SW1 switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the vehicle width lamp Po is turned on.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第3開關電路SW3→第1燈電路L1」之路徑流動。藉此，車寬燈Po之合計1燈點燈(表2)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "the third lamp circuit L3 → the third switch circuit SW3 → the first lamp circuit L1". Thereby, the total width of the vehicle width lamp Po is 1 lamp (Table 2).

接下來，在圖9之例，第1開關電路SW1是將第1基準節點NB1和第2接點NS2之間導通。另外，第2開關電路SW2是將第2基準節點NB2和第4接點NS4之間導通。第3開關電路SW3是將第3基準節點NB3和第7接點NS7之間導通。 Next, in the example of FIG. 9, the first switch circuit SW1 is turned on between the first reference node NB1 and the second contact NS2. Further, the second switch circuit SW2 is electrically connected between the second reference node NB2 and the fourth contact NS4. The third switch circuit SW3 is electrically connected between the third reference node NB3 and the seventh contact NS7.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 to select the high beam lamp Hi, and switches the third switch by turning on the vehicle width lamp Po. Circuit SW3.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第3開關電路SW3→第1開關電路SW1→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi及車寬燈Po之合計3燈點燈(表2)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "the third lamp circuit L3 → the third switch circuit SW3 → the first switch circuit SW1 → the first lamp circuit L1". Thereby, the total of the high beam lamp Hi and the vehicle width lamp Po is 3 lamps (Table 2).

接下來，在圖10之例，第1開關電路SW1是將第1基準節點NB1和第1接點NS1之間導通。另外，第2開關電路SW2是將第2基準節點NB2和第3接點NS3之間導通。第3開關電路SW3是將第3基準節點NB3和第6接點NS6之間導通。 Next, in the example of FIG. 10, the first switch circuit SW1 is turned on between the first reference node NB1 and the first contact NS1. Further, the second switch circuit SW2 is electrically connected between the second reference node NB2 and the third contact NS3. The third switch circuit SW3 is electrically connected between the third reference node NB3 and the sixth contact NS6.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned on.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第2燈電路L2→第2開關電路SW2→第1開關電路SW1」之路徑流動。藉此，低光束用燈Lo及車寬燈Po之合計3燈點燈(表2)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "the third lamp circuit L3 → the second lamp circuit L2 → the second switch circuit SW2 → the first switch circuit SW1". Thereby, the total of the low beam lamp Lo and the vehicle width lamp Po is 3 lamps (Table 2).

接下來，在圖11之例，第1開關電路SW1是將第1基準節點NB1和第2接點NS2之間導通。另外，第2開關電路SW2是將第2基準節點NB2和第3接點NS3之間導通。第3開關電路SW3是將第3基準節點NB3和第6接點NS6之間導通。 Next, in the example of FIG. 11, the first switch circuit SW1 is electrically connected between the first reference node NB1 and the second contact NS2. Further, the second switch circuit SW2 is electrically connected between the second reference node NB2 and the third contact NS3. The third switch circuit SW3 is electrically connected between the third reference node NB3 and the sixth contact NS6.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned on.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第2燈電路L2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi、低光束用燈Lo及車寬燈Po之全燈點燈(表2)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third lamp circuit L3 → the second lamp circuit L2 → the first lamp circuit L1". Thereby, the high beam lamp Hi, the low beam lamp Lo, and the vehicle width lamp Po are all lighted (Table 2).

接下來，在圖12之例，第1開關電路SW1是將第1基準節點NB1和第1接點NS1之間導通。另外，第2開關電路SW2是將第2基準節點NB2和第4接點NS4之間導通。第3開關電路SW3是將第3基準節點NB3和第6接點NS6之間導通。 Next, in the example of FIG. 12, the first switch circuit SW1 is turned on between the first reference node NB1 and the first contact NS1. Further, the second switch circuit SW2 is electrically connected between the second reference node NB2 and the fourth contact NS4. The third switch circuit SW3 is electrically connected between the third reference node NB3 and the sixth contact NS6.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned on.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第2燈電路L2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi、低光束用燈Lo及車寬燈Po之全燈點燈(表2)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third lamp circuit L3 → the second lamp circuit L2 → the first lamp circuit L1". Thereby, the high beam lamp Hi, the low beam lamp Lo, and the vehicle width lamp Po are all lighted (Table 2).

在此，於LED燈點燈裝置100中，藉由第1外部端子Ta1與第2外部端子Ta2之間短路，第1燈電路L1、第2燈電路L2、及第3燈電路L3熄燈(例如，將照明關閉之圖4之狀態)。而且，舉例來說，將第3開關電路SW3切換而令照明從關閉(例如圖4之狀態)至開啟(例如圖12之狀態)。此情況下，從第1外部端子Ta1與第2外部端子Ta2之間短路之狀態，電流流至第1燈電路L1、第2燈電路L2、及第3燈電路L3而第1外部端子Ta1與第2外部端子Ta2之間之電位差漸漸地變大。藉此，可抑制令照明從關閉至開啟之情況下之衝擊電流。 Here, in the LED lamp lighting device 100, the first lamp circuit L1, the second lamp circuit L2, and the third lamp circuit L3 are turned off by short-circuiting between the first external terminal Ta1 and the second external terminal Ta2 (for example, , the state of Figure 4 that will turn off the illumination). Moreover, for example, the third switch circuit SW3 is switched to turn the illumination from off (for example, the state of FIG. 4) to on (for example, the state of FIG. 12). In this case, a current is short-circuited between the first external terminal Ta1 and the second external terminal Ta2, and current flows to the first lamp circuit L1, the second lamp circuit L2, and the third lamp circuit L3, and the first external terminal Ta1 and The potential difference between the second external terminals Ta2 gradually increases. Thereby, the inrush current in the case where the illumination is turned off to on can be suppressed.

接下來，在圖13之例，第1開關電路SW1是將第1基準節點NB1和第2接點NS2之間導通。另外，第2開關電路SW2是將第2基準節點NB2和第4接點NS4之間導通。第3開關電路SW3是將第3基準節點NB3和第6接點NS6之間導通。 Next, in the example of FIG. 13, the first switch circuit SW1 is electrically connected between the first reference node NB1 and the second contact NS2. Further, the second switch circuit SW2 is electrically connected between the second reference node NB2 and the fourth contact NS4. The third switch circuit SW3 is electrically connected between the third reference node NB3 and the sixth contact NS6.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關 電路SW2，以將照明開啟的方式切換第3開關電路SW3。 That is, the user switches the first switch circuit SW1 in such a manner that the overtaking light is turned on, and switches the second switch in such a manner as to select the high beam lamp Hi. The circuit SW2 switches the third switch circuit SW3 in such a manner that the illumination is turned on.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第2燈電路L2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi、低光束用燈Lo及車寬燈Po之全燈點燈(表2)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third lamp circuit L3 → the second lamp circuit L2 → the first lamp circuit L1". Thereby, the high beam lamp Hi, the low beam lamp Lo, and the vehicle width lamp Po are all lighted (Table 2).

附帶一提，於上述圖2至圖13顯示之通常動作時之情況下，開關控制電路C1不動作，該開關控制電路C1不影響電流i。 Incidentally, in the case of the normal operation shown in FIGS. 2 to 13 described above, the switch control circuit C1 does not operate, and the switch control circuit C1 does not affect the current i.

如以上，與實施例1相關之燈點燈裝置100之LED燈未故障之通常動作時之動作(表2)是除了在選擇高光束用燈Hi且將照明開啟之情況下之點燈狀態不同以外，與表1顯示之一般之燈泡燈點燈裝置之動作同等。 As described above, the operation of the normal operation of the LED lamp of the lamp lighting device 100 according to the first embodiment (Table 2) is different in the lighting state except when the high beam lamp Hi is selected and the illumination is turned on. Other than the operation of the general lamp lamp lighting device shown in Table 1.

接下來，針對燈點燈裝置100之車寬燈Po故障之情況下之動作進行說明。 Next, an operation in the case where the vehicle width lamp Po of the lamp lighting device 100 is malfunctioning will be described.

表3是顯示一般之燈泡燈點燈裝置之各開關之開啟/關閉與車寬燈Po故障之情況下之各燈泡燈之點燈之關係的表。另外，表4是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之各開關之開啟/關閉與車寬燈Po故障之情況下之各LED燈之點燈之關係的表。另外，圖14至圖25是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作之例的電路圖。 Table 3 is a table showing the relationship between the opening/closing of the switches of the general lamp lamp lighting device and the lighting of the respective lamp lamps in the case where the vehicle width lamp Po is faulty. Further, Table 4 is a table showing the relationship between the lighting of each LED lamp in the case where the opening/closing of the switches of the lamp lighting device 100 relating to the first embodiment shown in Fig. 1 and the problem of the vehicle width lamp Po is broken. 14 to 25 are circuit diagrams showing an example of an operation in the case where the vehicle width lamp Po of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 is malfunctioning.

舉例來說，在圖14之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖2顯示之狀態同樣。 For example, in the example of Fig. 14, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in Fig. 2 described above.

亦即，由使用者以將超車燈關閉的方式切換第1 開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 That is, the user switches the first mode by turning off the overtaking light. The switch circuit SW1 switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第1開關電路SW1」之路徑流動。亦即，第1外部端子Ta1與第2外部端子Ta2之間短路。藉此，第1至第3燈電路L1~L3是熄燈(表4)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third switching circuit SW3 → the first switching circuit SW1". In other words, the first external terminal Ta1 and the second external terminal Ta2 are short-circuited. Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 4).

接下來，在圖15之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖3顯示之狀態同樣。 Next, in the example of Fig. 15, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in Fig. 3 described above.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第2開關電路SW2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi之合計2燈點燈(表4)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "the third switching circuit SW3 → the second switching circuit SW2 → the first lamp circuit L1". Thereby, the total of the high beam lamp Hi is 2 lamps (Table 4).

接下來，在圖16之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖4顯示之狀態同樣。 Next, in the example of Fig. 16, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in Fig. 4 described above.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第1燈電路L1」之路徑流動。亦即，第1外部端子Ta1與第2外部端子Ta2之間短路。藉此，第1至第3燈電路L1~L3是熄燈(表4)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third switching circuit SW3 → the first lamp circuit L1". In other words, the first external terminal Ta1 and the second external terminal Ta2 are short-circuited. Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 4).

接下來，在圖17之例，第1至第3開關電路 SW1~SW3之狀態是與已敘述之圖5顯示之狀態同樣。 Next, in the example of FIG. 17, the first to third switching circuits The state of SW1 to SW3 is the same as that shown in Fig. 5 which has already been described.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第1開關電路SW1→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi之合計2燈點燈(表4)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third switching circuit SW3 → the first switching circuit SW1 → the first lamp circuit L1". Thereby, the total of the high beam lamp Hi is 2 lamps (Table 4).

附帶一提，於上述圖14至圖17顯示之情況下，開關控制電路C1不動作，該開關控制電路C1不影響電流i。 Incidentally, in the case shown in the above-described FIGS. 14 to 17, the switch control circuit C1 does not operate, and the switch control circuit C1 does not affect the current i.

接下來，在圖18之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖6顯示之狀態同樣。 Next, in the example of Fig. 18, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in Fig. 6 described above.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch by turning on the vehicle width lamp Po. Circuit SW3.

在此，於上述各開關電路SW1~SW3之狀態是因為車寬燈Po故障而電流i不流動。然而，此時，如先前已敘述，燈驅動電源10是藉由該定電壓控制機能，使朝第1電源端子TS1與第2電源端子TS2之間輸出之輸出電壓上昇至預先設定之規定電壓而限制於一定之電壓。藉此，當第4接點NS4與第2外部端子Ta2之間之電位差之大小變成該基準電壓以上，則開關控制電路C1將開關元件SCR開啟。 Here, in the state of each of the above-described switch circuits SW1 to SW3, the current i does not flow because the vehicle width lamp Po fails. However, at this time, as described above, the lamp driving power supply 10 is configured to increase the output voltage outputted between the first power supply terminal TS1 and the second power supply terminal TS2 to a predetermined voltage by a predetermined voltage control function. Limited to a certain voltage. Thereby, when the magnitude of the potential difference between the fourth contact NS4 and the second external terminal Ta2 becomes equal to or higher than the reference voltage, the switching control circuit C1 turns on the switching element SCR.

藉此，自燈驅動電源10供給之電流i是以「開關 元件SCR→二極體D→第3開關電路SW3→第1開關電路SW1」之路徑流動。亦即，第1外部端子Ta1與第2外部端子Ta2之間短路。藉此，第1至第3燈電路L1~L3是熄燈(表4)。 Thereby, the current i supplied from the lamp driving power source 10 is "switching" The path of the element SCR→diode D→the third switch circuit SW3→the first switch circuit SW1” flows. In other words, the first external terminal Ta1 and the second external terminal Ta2 are short-circuited. Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 4).

接下來，在圖19之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖7顯示之狀態同樣。 Next, in the example of Fig. 19, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in Fig. 7 described above.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch by turning on the vehicle width lamp Po. Circuit SW3.

而且，藉由在圖18所說明之已敘述之動作原理，開關控制電路C1將開關元件SCR開啟。 Moreover, the switching control circuit C1 turns on the switching element SCR by the operation principle described in FIG.

藉此，自燈驅動電源10供給之電流i是以「開關元件SCR→二極體D→第3開關電路SW3→第2開關電路SW2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi之合計2燈點燈(表4)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "switching element SCR → diode D → third switching circuit SW3 → second switching circuit SW2 → first lamp circuit L1". Thereby, the total of the high beam lamp Hi is 2 lamps (Table 4).

接下來，在圖20之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖8顯示之狀態同樣。 Next, in the example of FIG. 20, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch by turning on the vehicle width lamp Po. Circuit SW3.

而且，藉由在圖18所說明之已敘述之動作原理，開關控制電路C1將開關元件SCR開啟。 Moreover, the switching control circuit C1 turns on the switching element SCR by the operation principle described in FIG.

藉此，自燈驅動電源10供給之電流i是以「開關 元件SCR→二極體D→第3開關電路SW3→第1開關電路SW1」之路徑流動。亦即，第1外部端子Ta1與第2外部端子Ta2之間短路。藉此，第1至第3燈電路L1~L3是熄燈(表4)。 Thereby, the current i supplied from the lamp driving power source 10 is "switching" The path of the element SCR→diode D→the third switch circuit SW3→the first switch circuit SW1” flows. In other words, the first external terminal Ta1 and the second external terminal Ta2 are short-circuited. Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 4).

接下來，在圖21之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖9顯示之狀態同樣。 Next, in the example of FIG. 21, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 to select the high beam lamp Hi, and switches the third switch by turning on the vehicle width lamp Po. Circuit SW3.

而且，藉由在圖18所說明之已敘述之動作原理，開關控制電路C1將開關元件SCR開啟。 Moreover, the switching control circuit C1 turns on the switching element SCR by the operation principle described in FIG.

藉此，自燈驅動電源10供給之電流i是以「開關元件SCR→第2開關電路SW2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi之合計2燈點燈(表4)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the switching element SCR → the second switching circuit SW2 → the first lamp circuit L1". Thereby, the total of the high beam lamp Hi is 2 lamps (Table 4).

接下來，在圖22之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖10顯示之狀態同樣。 Next, in the example of Fig. 22, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in Fig. 10 described above.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned on.

而且，藉由在圖18所說明之已敘述之動作原理，開關控制電路C1將開關元件SCR開啟。 Moreover, the switching control circuit C1 turns on the switching element SCR by the operation principle described in FIG.

藉此，自燈驅動電源10供給之電流i是以「開關元件SCR→二極體D→第2燈電路L2→第2開關電路SW2→第1開關電路SW1」之路徑流動。藉此，低光束用燈Lo之合 計2燈點燈(表4)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "switching element SCR → diode D → second lamp circuit L2 → second switching circuit SW2 → first switching circuit SW1". Thereby, the low beam lamp Lo is combined Count 2 lights (Table 4).

接下來，在圖23之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖11顯示之狀態同樣。 Next, in the example of FIG. 23, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned on.

而且，藉由在圖18所說明之已敘述之動作原理，開關控制電路C1將開關元件SCR開啟。 Moreover, the switching control circuit C1 turns on the switching element SCR by the operation principle described in FIG.

藉此，自燈驅動電源10供給之電流i是以「開關元件SCR→二極體D→第2燈電路L2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi、及低光束用燈Lo之合計4燈點燈(表4)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "switching element SCR → diode D → second lamp circuit L2 → first lamp circuit L1". Thereby, a total of four lamps of the high beam lamp Hi and the low beam lamp Lo are turned on (Table 4).

接下來，在圖24之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖12顯示之狀態同樣。 Next, in the example of FIG. 24, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned on.

而且，藉由在圖18所說明之已敘述之動作原理，開關控制電路C1將開關元件SCR開啟。 Moreover, the switching control circuit C1 turns on the switching element SCR by the operation principle described in FIG.

藉此，自燈驅動電源10供給之電流i是以「開關元件SCR→第2開關電路SW2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi之合計2燈點燈(表4)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the switching element SCR → the second switching circuit SW2 → the first lamp circuit L1". Thereby, the total of the high beam lamp Hi is 2 lamps (Table 4).

接下來，在圖25之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖13顯示之狀態同樣。 Next, in the example of FIG. 25, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned on.

而且，藉由在圖18所說明之已敘述之動作原理，開關控制電路C1將開關元件SCR開啟。 Moreover, the switching control circuit C1 turns on the switching element SCR by the operation principle described in FIG.

藉此，自燈驅動電源10供給之電流i是以「開關元件SCR→第2開關電路SW2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi之合計2燈點燈(表4)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the switching element SCR → the second switching circuit SW2 → the first lamp circuit L1". Thereby, the total of the high beam lamp Hi is 2 lamps (Table 4).

如以上，與實施例1相關之燈點燈裝置100之車寬燈Po故障之情況下之動作(表4)是同等於表3顯示之一般之燈泡燈點燈裝置之車寬燈Po故障之情況下之動作。 As described above, the operation in the case of the lamp width lamp Po of the lamp lighting device 100 according to the first embodiment (Table 4) is equivalent to the lamp width lamp Po failure of the general lamp lamp lighting device shown in Table 3. The action in the case.

接下來，針對燈點燈裝置100之低光束用燈Lo故障之情況下之動作進行說明。 Next, an operation in the case where the low beam lamp Lo of the lamp lighting device 100 fails may be described.

表5是顯示一般之燈泡燈點燈裝置之各開關之開啟/關閉與低光束用燈Lo故障之情況下之各燈泡燈之點燈之關係的表。另外，表6是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之各開關之開啟/關閉與低光束用燈Lo故障之情況下之各LED燈之點燈之關係的表。另外，圖26至圖37是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之低光束用燈Lo障之情況下之動作之例的電路圖。 Table 5 is a table showing the relationship between the turning on and off of the respective switches of the general lamp lamp lighting device and the lighting of the respective lamp lamps in the case where the low beam lamp Lo is malfunctioning. In addition, Table 6 is a table showing the relationship between the ON/OFF of the switches of the lamp lighting device 100 and the lighting of the low beam lamp Lo in the case of the failure of the low light beam lamp Lo shown in FIG. . In addition, FIG. 26 to FIG. 37 are circuit diagrams showing an example of the operation in the case where the low-beam lamp Lo of the lamp lighting apparatus 100 according to the first embodiment shown in FIG.

舉例來說，在圖26之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖2顯示之狀態同樣。 For example, in the example of Fig. 26, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in Fig. 2 described above.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關 電路SW2，以將照明關閉的方式切換第3開關電路SW3。 That is, the user switches the first switch circuit SW1 in such a manner that the overtaking lamp is turned off, and switches the second switch in such a manner as to select the low beam lamp Lo. The circuit SW2 switches the third switch circuit SW3 in such a manner that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第1開關電路SW1」之路徑流動。亦即，第1外部端子Ta1與第2外部端子Ta2之間短路。藉此，第1至第3燈電路L1~L3是熄燈(表6)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third switching circuit SW3 → the first switching circuit SW1". In other words, the first external terminal Ta1 and the second external terminal Ta2 are short-circuited. Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 6).

接下來，在圖27之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖3顯示之狀態同樣。 Next, in the example of FIG. 27, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第2開關電路SW2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi之合計2燈點燈(表6)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "the third switching circuit SW3 → the second switching circuit SW2 → the first lamp circuit L1". Thereby, the total of the high beam lamp Hi is 2 lamps (Table 6).

接下來，在圖28之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖4顯示之狀態同樣。 Next, in the example of FIG. 28, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第1開關電路SW1」之路徑流動。亦即，第1外部端子Ta1與第2外部端子Ta2之間短路。藉此，第1至第3燈電路L1~L3是熄燈(表6)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third switching circuit SW3 → the first switching circuit SW1". In other words, the first external terminal Ta1 and the second external terminal Ta2 are short-circuited. Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 6).

接下來，在圖29之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖5顯示之狀態同樣。 Next, in the example of FIG. 29, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第1開關電路SW1→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi之合計2燈點燈(表6)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third switching circuit SW3 → the first switching circuit SW1 → the first lamp circuit L1". Thereby, the total of the high beam lamp Hi is 2 lamps (Table 6).

接下來，在圖30之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖6顯示之狀態同樣。 Next, in the example of FIG. 30, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch by turning on the vehicle width lamp Po. Circuit SW3.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第3開關電路SW3→第1開關電路SW1」之路徑流動。藉此，車寬燈Po之1燈點燈(表6)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third lamp circuit L3 → the third switch circuit SW3 → the first switch circuit SW1". Thereby, the 1 lamp of the car width lamp Po lights (Table 6).

接下來，在圖31之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖7顯示之狀態同樣。 Next, in the example of FIG. 31, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch by turning on the vehicle width lamp Po. Circuit SW3.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第3開關電路SW3→第2開關電路SW2→第1燈電路L1」之路徑流動。藉此，車寬燈Po及高光束用燈Hi之合 計3燈點燈(表6)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "the third lamp circuit L3 → the third switch circuit SW3 → the second switch circuit SW2 → the first lamp circuit L1". Thereby, the combination of the car width lamp Po and the high beam lamp Hi Count 3 lights (Table 6).

接下來，在圖32之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖8顯示之狀態同樣。 Next, in the example of FIG. 32, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch by turning on the vehicle width lamp Po. Circuit SW3.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第3開關電路SW3→第1開關電路SW1」之路徑流動。藉此，車寬燈Po之1燈點燈(表6)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third lamp circuit L3 → the third switch circuit SW3 → the first switch circuit SW1". Thereby, the 1 lamp of the car width lamp Po lights (Table 6).

接下來，在圖33之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖9顯示之狀態同樣。 Next, in the example of FIG. 33, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 to select the high beam lamp Hi, and switches the third switch by turning on the vehicle width lamp Po. Circuit SW3.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第3開關電路SW3→第1開關電路SW1→第1燈電路L1」之路徑流動。藉此，車寬燈Po及高光束用燈Hi之合計3燈點燈(表6)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "the third lamp circuit L3 → the third switch circuit SW3 → the first switch circuit SW1 → the first lamp circuit L1". Thereby, the total of the vehicle width lamp Po and the high beam lamp Hi is 3 lamps (Table 6).

接下來，在圖34之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖10顯示之狀態同樣。 Next, in the example of FIG. 34, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關 電路SW2，以將照明開啟的方式切換第3開關電路SW3。 That is, the user switches the first switch circuit SW1 in such a manner that the overtaking lamp is turned off, and switches the second switch in such a manner as to select the low beam lamp Lo. The circuit SW2 switches the third switch circuit SW3 in such a manner that the illumination is turned on.

在此，於上述各開關電路SW1~SW3之狀態是因為低光束用燈Lo故障而電流i不流動。 Here, in the state of each of the above-described switch circuits SW1 to SW3, the low beam lamp Lo fails and the current i does not flow.

藉此，第1至第3燈電路L1~L3是熄燈。 Thereby, the first to third lamp circuits L1 to L3 are turned off.

接下來，在圖35之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖11顯示之狀態同樣。 Next, in the example of FIG. 35, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned on.

在此，於上述各開關電路SW1~SW3之狀態是因為低光束用燈Lo故障而電流i不流動。 Here, in the state of each of the above-described switch circuits SW1 to SW3, the low beam lamp Lo fails and the current i does not flow.

藉此，第1至第3燈電路L1~L3是熄燈。 Thereby, the first to third lamp circuits L1 to L3 are turned off.

附帶一提，於上述圖26至圖35顯示之情況下，開關控制電路C1不動作，該開關控制電路C1不影響電流i。 Incidentally, in the case shown in the above-described FIGS. 26 to 35, the switch control circuit C1 does not operate, and the switch control circuit C1 does not affect the current i.

接下來，在圖36之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖12顯示之狀態同樣。 Next, in the example of FIG. 36, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned on.

在此，於上述各開關電路SW1~SW3之狀態是因為低光束用燈Lo故障而電流i不流動。然而，此時，如先前已敘述，燈驅動電源10是藉由該定電壓控制機能，使朝第1電源端子TS1與第2電源端子TS2之間輸出之輸出電壓 上昇至預先設定之規定電壓而限制於一定之電壓。藉此，當第4接點NS4與第2外部端子Ta2之間之電位差之大小變成該基準電壓以上，則開關控制電路C1將開關元件SCR開啟。 Here, in the state of each of the above-described switch circuits SW1 to SW3, the low beam lamp Lo fails and the current i does not flow. However, at this time, as previously described, the lamp driving power source 10 is configured to output an output voltage between the first power supply terminal TS1 and the second power supply terminal TS2 by the constant voltage control function. It rises to a predetermined voltage and is limited to a certain voltage. Thereby, when the magnitude of the potential difference between the fourth contact NS4 and the second external terminal Ta2 becomes equal to or higher than the reference voltage, the switching control circuit C1 turns on the switching element SCR.

藉此，自燈驅動電源10供給之電流i是以「開關元件SCR→第2開關電路SW2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi之合計2燈點燈(表6)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the switching element SCR → the second switching circuit SW2 → the first lamp circuit L1". Thereby, the total of the high beam lamp Hi is 2 lamps (Table 6).

接下來，在圖37之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖13顯示之狀態同樣。 Next, in the example of FIG. 37, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned on.

而且，藉由在圖35所說明之已敘述之動作原理，開關控制電路C1將開關元件SCR開啟。 Moreover, the switching control circuit C1 turns on the switching element SCR by the operation principle described in FIG.

藉此，自燈驅動電源10供給之電流i是以「開關元件SCR→第2開關電路SW2→第1燈電路L1」之路徑流動。藉此，高光束用燈Hi之合計2燈點燈(表6)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the switching element SCR → the second switching circuit SW2 → the first lamp circuit L1". Thereby, the total of the high beam lamp Hi is 2 lamps (Table 6).

如以上，與實施例1相關之燈點燈裝置100之低光束用燈Lo故障之情況下之動作(表6)是除了在選擇低光束用燈Lo且將照明開啟之情況下之點燈狀態不同以外，與表5顯示之一般之燈泡燈點燈裝置之低光束用燈Lo故障之情況下之動作同等。 As described above, the operation in the case where the low beam lamp Lo of the lamp lighting device 100 according to the first embodiment fails (Table 6) is the lighting state in the case where the low beam lamp Lo is selected and the illumination is turned on. The operation is the same as that in the case where the low beam lamp Lo of the general lamp lamp lighting device shown in Table 5 fails.

接下來，針對燈點燈裝置100之高光束用燈Hi故障之情況下之動作進行說明。 Next, an operation in the case where the high beam lamp Hi of the lamp lighting device 100 fails will be described.

表7是顯示一般之燈泡燈點燈裝置之各開關之開啟/關閉與高光束用燈Hi故障之情況下之各燈泡燈之點燈之關係的表。另外，表8是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之各開關之開啟/關閉與高光束用燈Hi故障之情況下之各LED燈之點燈之關係的表。另外，圖38至圖49是顯示在圖1顯示之與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作之例的電路圖。 Table 7 is a table showing the relationship between the opening/closing of the switches of the general lamp lamp lighting device and the lighting of the respective lamp lamps in the case where the high beam lamp Hi is malfunctioning. In addition, Table 8 is a table showing the relationship between the on/off of the respective switches of the lamp lighting device 100 and the lighting of the high beam lamp Hi in the case of the lamp lighting device 100 according to the first embodiment shown in FIG. . 38 to 49 are circuit diagrams showing an example of the operation in the case where the high beam lamp Hi of the lamp lighting device 100 according to the first embodiment shown in Fig. 1 fails.

舉例來說，在圖38之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖2顯示之狀態同樣。 For example, in the example of FIG. 38, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第1開關電路SW1」之路徑流動。亦即，第1外部端子Ta1與第2外部端子Ta2之間短路。藉此，第1至第3燈電路L1~L3是熄燈(表8)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third switching circuit SW3 → the first switching circuit SW1". In other words, the first external terminal Ta1 and the second external terminal Ta2 are short-circuited. Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 8).

接下來，在圖39之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖3顯示之狀態同樣。 Next, in the example of FIG. 39, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned off.

在此，於上述各開關電路SW1~SW3之狀態是因為高光束用燈Hi故障而電流i不流動。 Here, in the state of each of the above-described switch circuits SW1 to SW3, the high beam lamp Hi fails and the current i does not flow.

藉此，第1至第3燈電路L1~L3是熄燈(表8)。 Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 8).

接下來，在圖40之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖4顯示之狀態同樣。 Next, in the example of FIG. 40, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned off.

藉此，自燈驅動電源10供給之電流i是以「第3開關電路SW3→第1燈電路L1」之路徑流動。亦即，第1外部端子Ta1與第2外部端子Ta2之間短路。藉此，第1至第3燈電路L1~L3是熄燈(表8)。 Thereby, the current i supplied from the lamp driving power source 10 flows in the path of "the third switching circuit SW3 → the first lamp circuit L1". In other words, the first external terminal Ta1 and the second external terminal Ta2 are short-circuited. Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 8).

接下來，在圖41之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖5顯示之狀態同樣。 Next, in the example of FIG. 41, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明關閉的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned off.

在此，於上述各開關電路SW1~SW3之狀態是因為高光束用燈Hi故障而電流i不流動。 Here, in the state of each of the above-described switch circuits SW1 to SW3, the high beam lamp Hi fails and the current i does not flow.

藉此，第1至第3燈電路L1~L3是熄燈(表8)。 Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 8).

接下來，在圖42之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖6顯示之狀態同樣。 Next, in the example of FIG. 42, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch by turning on the vehicle width lamp Po. Circuit SW3.

藉此，自燈驅動電源10供給之電流i是以「第3燈 電路L3→第3開關電路SW3→第1開關電路SW1」之路徑流動。藉此，車寬燈Po之1燈點燈(表8)。 Thereby, the current i supplied from the lamp driving power source 10 is "the third lamp" The path of the circuit L3 → the third switch circuit SW3 → the first switch circuit SW1 ′ flows. Thereby, the 1 lamp of the car width lamp Po lights (Table 8).

接下來，在圖43之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖7顯示之狀態同樣。 Next, in the example of FIG. 43, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch by turning on the vehicle width lamp Po. Circuit SW3.

在此，於上述各開關電路SW1~SW3之狀態是因為高光束用燈Hi故障而電流i不流動。 Here, in the state of each of the above-described switch circuits SW1 to SW3, the high beam lamp Hi fails and the current i does not flow.

藉此，第1至第3燈電路L1~L3是熄燈(表8)。 Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 8).

接下來，在圖44之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖8顯示之狀態同樣。 Next, in the example of FIG. 44, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch by turning on the vehicle width lamp Po. Circuit SW3.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第3開關電路SW3→第2開關電路SW1」之路徑流動。藉此，車寬燈Po之1燈點燈(表8)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "the third lamp circuit L3 → the third switch circuit SW3 → the second switch circuit SW1". Thereby, the 1 lamp of the car width lamp Po lights (Table 8).

接下來，在圖45之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖9顯示之狀態同樣。 Next, in the example of FIG. 45, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關 電路SW2，以車寬燈Po點燈的方式切換第3開關電路SW3。 That is, the user switches the first switch circuit SW1 in such a manner that the overtaking light is turned on, and switches the second switch in such a manner as to select the high beam lamp Hi. In the circuit SW2, the third switch circuit SW3 is switched in such a manner that the vehicle width lamp Po is turned on.

在此，於上述各開關電路SW1~SW3之狀態是因為高光束用燈Hi故障而電流i不流動。 Here, in the state of each of the above-described switch circuits SW1 to SW3, the high beam lamp Hi fails and the current i does not flow.

藉此，第1至第3燈電路L1~L3是熄燈(表8)。 Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 8).

接下來，在圖46之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖10顯示之狀態同樣。 Next, in the example of FIG. 46, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned on.

藉此，自燈驅動電源10供給之電流i是以「第3燈電路L3→第2燈電路L2→第2開關電路SW2→第1開關電路SW1」之路徑流動。藉此，車寬燈Po及低光束用燈Lo之合計3燈點燈(表8)。 Thereby, the current i supplied from the lamp driving power source 10 flows in a path of "the third lamp circuit L3 → the second lamp circuit L2 → the second switch circuit SW2 → the first switch circuit SW1". Thereby, the total of the lamp width Po and the low beam lamp Lo is 3 lamps (Table 8).

接下來，在圖47之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖11顯示之狀態同樣。 Next, in the example of FIG. 47, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇低光束用燈Lo的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the low beam lamp Lo, and switches the third switch circuit SW3 so that the illumination is turned on.

在此，於上述各開關電路SW1~SW3之狀態是因為高光束用燈Hi故障而電流i不流動。 Here, in the state of each of the above-described switch circuits SW1 to SW3, the high beam lamp Hi fails and the current i does not flow.

藉此，第1至第3燈電路L1~L3是熄燈(表8)。 Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 8).

接下來，在圖48之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖12顯示之狀態同樣。 Next, in the example of FIG. 48, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈關閉的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking lamp is turned off, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned on.

在此，於上述各開關電路SW1~SW3之狀態是因為高光束用燈Hi故障而電流i不流動。 Here, in the state of each of the above-described switch circuits SW1 to SW3, the high beam lamp Hi fails and the current i does not flow.

藉此，第1至第3燈電路L1~L3是熄燈(表8)。 Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 8).

接下來，在圖49之例，第1至第3開關電路SW1~SW3之狀態是與已敘述之圖13顯示之狀態同樣。 Next, in the example of FIG. 49, the states of the first to third switch circuits SW1 to SW3 are the same as those shown in FIG.

亦即，由使用者以將超車燈開啟的方式切換第1開關電路SW1，以選擇高光束用燈Hi的方式切換第2開關電路SW2，以將照明開啟的方式切換第3開關電路SW3。 In other words, the user switches the first switch circuit SW1 so that the overtaking light is turned on, switches the second switch circuit SW2 so as to select the high beam lamp Hi, and switches the third switch circuit SW3 so that the illumination is turned on.

在此，於上述各開關電路SW1~SW3之狀態是因為高光束用燈Hi故障而電流i不流動。 Here, in the state of each of the above-described switch circuits SW1 to SW3, the high beam lamp Hi fails and the current i does not flow.

藉此，第1至第3燈電路L1~L3是熄燈(表8)。 Thereby, the first to third lamp circuits L1 to L3 are turned off (Table 8).

附帶一提，於上述圖38至圖49顯示之情況下，開關控制電路C1不動作，該開關控制電路C1不影響電流i。 Incidentally, in the case shown in the above-described FIGS. 38 to 49, the switch control circuit C1 does not operate, and the switch control circuit C1 does not affect the current i.

如以上，與實施例1相關之燈點燈裝置100之高光束用燈Hi故障之情況下之動作(表8)是除了在選擇高光束用燈Hi且將車寬燈Po點燈之情況下之點燈狀態之一部分不同以外，與表7顯示之一般之燈泡燈點燈裝置之高光束用燈Hi故障之情況下之動作同等。 As described above, the operation in the case where the high beam lamp Hi of the lamp lighting device 100 according to the first embodiment is malfunctioning (Table 8) is in the case where the high beam lamp Hi is selected and the vehicle width lamp Po is turned on. The one of the lighting states is the same as that in the case where the high beam lamp Hi of the general lamp lamp lighting device shown in Table 7 is malfunctioning.

以上，根據與本發明相關之LED燈點燈裝置100，與習知之一般之燈泡燈點燈裝置同等之動作成為可 能。 As described above, according to the LED lamp lighting device 100 related to the present invention, the same operation as the conventional general lamp lamp lighting device can be performed. can.

另外，即便在LED燈之破損時，使用者亦可操作各開關電路而控制各LED燈之點燈。 In addition, even when the LED lamp is broken, the user can operate each of the switch circuits to control the lighting of each of the LED lights.

再者，即便是與高光束用燈Hi/低光束用燈Lo不同步之種類之LED燈(車寬燈Po)，於故障時對高光束用燈Hi/低光束用燈Lo之動作之影響亦少。 Furthermore, even in the case of an LED lamp (vehicle width lamp Po) of a type that is not synchronized with the high beam lamp Hi/low beam lamp Lo, the effect of the high beam lamp Hi/low beam lamp Lo on the failure is caused. There are also few.

再者，如先前已敘述，於LED燈點燈裝置100中，藉由第1外部端子Ta1與第2外部端子Ta2之間短路，第1燈電路L1、第2燈電路L2、及第3燈電路L3熄燈。而且，舉例來說，藉由將第3開關電路SW3切換而令照明從關閉至開啟，從第1外部端子Ta1與第2外部端子Ta2之間短路之狀態，電流流至第1燈電路L1、第2燈電路L2、及第3燈電路L3而第1外部端子Ta1與第2外部端子Ta2之間之電位差漸漸地變大。藉此，亦可抑制令照明從關閉至開啟之情況下之衝擊電流。 Further, as described above, in the LED lamp lighting device 100, the first lamp circuit L1, the second lamp circuit L2, and the third lamp are short-circuited between the first external terminal Ta1 and the second external terminal Ta2. Circuit L3 is turned off. Further, for example, by switching the third switch circuit SW3 to turn off the illumination from off to on, a current is short-circuited between the first external terminal Ta1 and the second external terminal Ta2, and current flows to the first lamp circuit L1. In the second lamp circuit L2 and the third lamp circuit L3, the potential difference between the first external terminal Ta1 and the second external terminal Ta2 gradually increases. Thereby, it is also possible to suppress an inrush current in the case where the illumination is turned off to on.

附帶一提，實施形態是舉例顯示，發明之範圍並不限定於那些。 Incidentally, the embodiments are shown by way of example, and the scope of the invention is not limited to those.

10‧‧‧燈驅動電源 10‧‧‧Lighting power supply

100‧‧‧LED燈點燈裝置 100‧‧‧LED lamp lighting device

C1‧‧‧開關控制電路 C1‧‧‧Switch Control Circuit

CON‧‧‧驅動控制電路 CON‧‧‧Drive Control Circuit

CX‧‧‧電容器 CX‧‧‧ capacitor

D‧‧‧二極體 D‧‧‧ diode

G‧‧‧交流發電機 G‧‧‧Alternator

G1‧‧‧交流發電機之一端 One end of the G1‧‧‧ alternator

G2‧‧‧交流發電機之另一端 The other end of the G2‧‧‧ alternator

Hi‧‧‧高光束用燈 Hi‧‧‧High beam light

L1‧‧‧第1燈電路 L1‧‧‧1st lamp circuit

L2‧‧‧第2燈電路 L2‧‧‧2nd lamp circuit

L3‧‧‧第3燈電路 L3‧‧‧3rd lamp circuit

Lo‧‧‧低光束用燈 Lo‧‧‧Low beam light

NB1‧‧‧第1基準節點 NB1‧‧‧1st reference node

NB2‧‧‧第2基準 NB2‧‧‧2nd benchmark

NB3‧‧‧第3基準節點 NB3‧‧‧3rd reference node

NS1‧‧‧第1接點 NS1‧‧‧1st joint

NS2‧‧‧第2接點 NS2‧‧‧2nd contact

NS3‧‧‧第3接點 NS3‧‧‧3rd junction

NS4‧‧‧第4接點 NS4‧‧‧4th junction

NS5‧‧‧第5接點 NS5‧‧‧5th joint

NS6‧‧‧第6接點 NS6‧‧‧6th joint

NS7‧‧‧第7接點 NS7‧‧‧7th junction

Po‧‧‧車寬燈 Po‧‧‧Car width lamp

R1‧‧‧第1電阻 R1‧‧‧1st resistor

R2‧‧‧第2電阻 R2‧‧‧2nd resistor

RX‧‧‧檢測電阻 RX‧‧‧ Sense resistor

SW1‧‧‧第1開關電路 SW1‧‧‧1st switch circuit

SW2‧‧‧第2開關電路 SW2‧‧‧2nd switch circuit

SW3‧‧‧第3開關電路 SW3‧‧‧3rd switch circuit

SCR‧‧‧開關元件 SCR‧‧‧ switching components

Ta1‧‧‧第1外部端子 Ta1‧‧‧1st external terminal

Ta2‧‧‧第2外部端子 Ta2‧‧‧2nd external terminal

TI1‧‧‧第1輸入端子 TI1‧‧‧1st input terminal

TS1‧‧‧第1電源端子 TS1‧‧‧1st power terminal

TS2‧‧‧第2電源端子 TS2‧‧‧2nd power terminal

X‧‧‧電源用開關元件 X‧‧‧Power supply switching elements

VA‧‧‧交流電壓 VA‧‧‧AC voltage

Ze‧‧‧齊納二極體 Ze‧‧‧Zina diode

Claims (10)

一種LED燈點燈裝置，是連接於燈驅動電源之低電位側之第1電源端子與高電位側之第2電源端子之間、自前述燈驅動電源接受驅動電流之供給、將藉由前述驅動電流而串聯地連接之複數個LED燈予以點燈之LED燈點燈裝置，其特徵在於包含：第1外部端子，連接前述第1電源端子；第2外部端子，連接前述第2電源端子；第1燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接前述第1外部端子；第2燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接前述第1燈電路之另一端；第3燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接前述第2燈電路之另一端，另一端連接前述第2外部端子；第1開關電路，只導通第1基準節點和連接前述第1外部端子之第1接點之間、或是前述第1基準節點和連接前述第1燈電路之另一端之第2接點之間之其中一者；第2開關電路，只導通連接前述第1燈電路之另一端之第2基準節點和連接前述第1基準節點之第3接點之間、或是前述第2基準節點和第4接點之間之其中一者；第3開關電路，只導通連接前述第1基準節點之第3基準節點和連接前述第2外部端子之第5接點之間、前述 第3基準節點和第6接點之間、或是前述第3基準節點和連接前述第2燈電路之另一端之第7接點之間之其中一者；二極體，陰極連接第2燈電路之另一端，陽極連接前述第4接點；開關元件，一端連接前述第4接點，另一端連接前述第2外部端子；開關控制電路，因應前述第4接點與前述第2外部端子之間之電位差而控制前述開關元件；前述開關控制電路是當前述第4接點與前述第2外部端子之間之電位差之大小在預先設定之基準電壓以上的情況下將前述開關元件開啟，當前述第4接點與前述第2外部端子之間之電位差之大小低於前述基準電壓的情況下將前述開關元件關閉。 An LED lamp lighting device is connected between a first power supply terminal on a low potential side of a lamp driving power source and a second power supply terminal on a high potential side, and receives a supply of a driving current from the lamp driving power source, and is driven by the driving An LED lamp lighting device for lighting a plurality of LED lamps connected in series with a current, comprising: a first external terminal connected to the first power supply terminal; and a second external terminal connected to the second power supply terminal; The 1 lamp circuit is composed of one LED lamp or a plurality of LED lamps connected in series, one end is connected to the first external terminal, and the second lamp circuit is composed of one LED lamp or a plurality of LED lamps connected in series. One end is connected to the other end of the first lamp circuit; the third lamp circuit is composed of one LED lamp or a plurality of LED lamps connected in series, one end is connected to the other end of the second lamp circuit, and the other end is connected to the foregoing 2 external terminal; the first switching circuit is only between the first reference node and the first contact connected to the first external terminal, or the first reference node and the second end connected to the other end of the first lamp circuit Between the contacts In the second switching circuit, only the second reference node connected to the other end of the first lamp circuit and the third contact connected to the first reference node, or the second reference node and the fourth connection are connected. One of the points; the third switching circuit is only between the third reference node that connects the first reference node and the fifth contact that connects the second external terminal, and One of a third reference node and a sixth junction, or a third reference node and a seventh junction connected to the other end of the second lamp circuit; a diode, a cathode connected to the second lamp The other end of the circuit has an anode connected to the fourth contact; the switching element has one end connected to the fourth contact and the other end connected to the second external terminal; and a switch control circuit for the fourth contact and the second external terminal The switching element is controlled by a potential difference between the switching element and the switching element, wherein the switching element is turned on when the magnitude of the potential difference between the fourth contact and the second external terminal is equal to or greater than a predetermined reference voltage When the magnitude of the potential difference between the fourth contact and the second external terminal is lower than the reference voltage, the switching element is turned off. 如請求項1之LED燈點燈裝置，在前述LED燈點燈裝置中，藉由前述第1外部端子與前述第2外部端子之間短路，前述第1燈電路、前述第2燈電路、及前述第3燈電路熄燈。 The LED lamp lighting device of claim 1, wherein the first lamp circuit, the second lamp circuit, and the first external terminal are short-circuited between the first external terminal and the second external terminal; The third lamp circuit is turned off. 如請求項1之LED燈點燈裝置，前述開關元件是陰極連接前述第4接點、陽極連接前述第2外部端子之閘流體。 In the LED lamp lighting device of claim 1, the switching element is a thyristor in which a cathode is connected to the fourth contact and an anode is connected to the second external terminal. 如請求項3之LED燈點燈裝置，前述開關控制電路具有：第1電阻，一端連接前述第4接點，另一端連接前述閘流體之閘；第2電阻，一端連接前述第1電阻之另一 端；齊納二極體，陽極連接前述第2電阻之另一端，陰極連接前述第2外部端子。 The LED lamp lighting device of claim 3, wherein the switch control circuit has: a first resistor, one end connected to the fourth contact, the other end connected to the gate of the thyristor; and the second resistor connected to the first resistor at one end One a Zener diode having an anode connected to the other end of the second resistor and a cathode connected to the second external terminal. 如請求項1之LED燈點燈裝置，前述燈驅動電源具有：第1輸入端子，連接交流發電機之一端；第2輸入端子，連接前述交流發電機之另一端；電源用開關元件，一端連接前述第1輸入端子，另一端連接前述第1電源端子；電容器，一端連接前述電源用開關元件之另一端，另一端連接前述第2輸入端子；檢測電阻，一端連接前述第2輸入端子，另一端連接前述第2電源端子；驅動控制電路，在電流流至前述檢測電阻的情況下，以流至前述檢測電阻之電流成為一定的方式控制前述電源用開關元件，另一方面，在電流不流至前述檢測電阻的情況下，以前述第1電源端子與前述第2電源端子之間之電壓成為預先設定之規定電壓的方式控制前述電源用開關元件。 The LED lamp lighting device of claim 1, wherein the lamp driving power source has: a first input terminal connected to one end of the alternator; a second input terminal connected to the other end of the alternator; and a power supply switching element connected at one end The first input terminal has the other end connected to the first power supply terminal; the capacitor has one end connected to the other end of the power supply switching element, the other end is connected to the second input terminal, and the detecting resistor is connected to the second input terminal at one end and the other end. The second power supply terminal is connected to the second power supply terminal, and when the current flows to the detection resistor, the power supply switching element is controlled such that the current flowing to the detection resistor becomes constant, and the current does not flow. In the case of the detection resistor, the power supply switching element is controlled such that the voltage between the first power supply terminal and the second power supply terminal is a predetermined voltage set in advance. 如請求項1之LED燈點燈裝置，前述燈驅動電源是具有定電壓控制機能與定電流控制機能而構成；在使電流流至前述第1燈電路、第2燈電路、及前述第3燈電路中之任一者之LED燈的情況下，藉由前述定電流控制機能將定電流流至前述LED燈；在不使電流流至前述第1燈電路、第2燈電路、及前述第3燈電路中之任一者之LED燈的情況下，藉由前述定電壓控制機能，使朝前述第1電源端子與前述第2電源端子之間輸出之輸出電壓上昇至預先設定之規定電壓而限制於一定之電壓。 The LED lamp lighting device of claim 1, wherein the lamp driving power source is configured to have a constant voltage control function and a constant current control function; and to cause a current to flow to the first lamp circuit, the second lamp circuit, and the third lamp. In the case of an LED lamp of any of the circuits, a constant current is supplied to the LED lamp by the constant current control function; and the current is not supplied to the first lamp circuit, the second lamp circuit, and the third In the case of an LED lamp of any one of the lamp circuits, the output voltage that is output between the first power supply terminal and the second power supply terminal is increased to a predetermined voltage by a predetermined voltage control function, thereby limiting At a certain voltage. 如請求項1之LED燈點燈裝置，前述第1燈電路之前述一端是前述第1燈電路之前述LED燈之陰極側，前述第1燈電路之前述另一端是前述第1燈電路之前述LED燈之陽極側，前述第2燈電路之前述一端是前述第2燈電路之前述LED燈之陰極側，前述第2燈電路之前述另一端是前述第2燈電路之前述LED燈之陽極側，前述第3燈電路之前述一端是前述第3燈電路之前述LED燈之陰極側，前述第3燈電路之前述另一端是前述第3燈電路之前述LED燈之陽極側。 The LED lamp lighting device of claim 1, wherein the one end of the first lamp circuit is a cathode side of the LED lamp of the first lamp circuit, and the other end of the first lamp circuit is the aforementioned one of the first lamp circuits The anode side of the LED lamp, the one end of the second lamp circuit is the cathode side of the LED lamp of the second lamp circuit, and the other end of the second lamp circuit is the anode side of the LED lamp of the second lamp circuit The one end of the third lamp circuit is the cathode side of the LED lamp of the third lamp circuit, and the other end of the third lamp circuit is the anode side of the LED lamp of the third lamp circuit. 如請求項1之LED燈點燈裝置，前述第1開關電路、前述第2開關電路、及前述第3開關電路是由使用者以手動控制。 In the LED lamp lighting device of claim 1, the first switch circuit, the second switch circuit, and the third switch circuit are manually controlled by a user. 如請求項1之LED燈點燈裝置，前述第1燈電路之LED燈是車輛之頭燈之高光束用燈，前述第2燈電路之LED燈是前述頭燈之低光束用燈，前述第3燈電路之LED燈是前述車輛之車寬燈。 The LED lamp lighting device of claim 1, wherein the LED lamp of the first lamp circuit is a high beam lamp for a headlight of a vehicle, and the LED lamp of the second lamp circuit is a low beam lamp for the headlight, the The LED lamp of the 3 lamp circuit is the car width lamp of the aforementioned vehicle. 一種LED燈點燈裝置之控制方法，該LED燈點燈裝置是連接於燈驅動電源之低電位側之第1電源端子與高電位側之第2電源端子之間、自前述燈驅動電源接受驅動電流之供給、將藉由前述驅動電流而串聯地連接之複數個LED燈予以點燈之LED燈點燈裝置；該LED燈點燈裝置包含：第1外部端子，連接前述第1電源端子；第2外部端子，連接前述第2電源端子；第1燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接前述 第1外部端子；第2燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接前述第1燈電路之另一端；第3燈電路，以1個LED燈或是串聯地連接之複數個LED燈構成，一端連接前述第2燈電路之另一端，另一端連接前述第2外部端子；第1開關電路，只導通第1基準節點和連接前述第1外部端子之第1接點之間、或是前述第1基準節點和連接前述第1燈電路之另一端之第2接點之間之其中一者；第2開關電路，只導通連接前述第1燈電路之另一端之第2基準節點和連接前述第1基準節點之第3接點之間、或是前述第2基準節點和第4接點之間之其中一者；第3開關電路，只導通連接前述第1基準節點之第3基準節點和連接前述第2外部端子之第5接點之間、前述第3基準節點和第6接點之間、或是前述第3基準節點和連接前述第2燈電路之另一端之第7接點之間之其中一者；二極體，陰極連接第2燈電路之另一端，陽極連接前述第4接點；開關元件，一端連接前述第4接點，另一端連接前述第2外部端子；開關控制電路，因應前述第4接點與前述第2外部端子之間之電位差而控制前述開關元件；該LED燈點燈裝置之控制方法之特徵在於：前述第4接點與前述第2外部端子之間之電位差之大小在預先設定之基準電壓以上的情況下將前述開關元件開啟，前述第4接點與前述第2外部端子之間之電位差之 大小低於前述基準電壓的情況下將前述開關元件關閉。 A method for controlling an LED lamp lighting device, which is connected between a first power supply terminal on a low potential side of a lamp driving power source and a second power supply terminal on a high potential side, and is driven from the lamp driving power source An LED lamp lighting device for lighting a plurality of LED lamps connected in series by the driving current; the LED lamp lighting device includes: a first external terminal connected to the first power supply terminal; 2, the external terminal is connected to the second power supply terminal; the first lamp circuit is composed of one LED lamp or a plurality of LED lamps connected in series, and one end is connected to the foregoing a first external terminal; the second lamp circuit is composed of one LED lamp or a plurality of LED lamps connected in series, one end of which is connected to the other end of the first lamp circuit; and the third lamp circuit is one LED lamp or a plurality of LED lamps connected in series, one end of which is connected to the other end of the second lamp circuit, and the other end of which is connected to the second external terminal; and the first switch circuit connects only the first reference node and the first external terminal One of the contacts between the 1st contact point and the second reference point connecting the first reference node and the other end of the first lamp circuit; the second switch circuit is only electrically connected to the first lamp circuit One of a second reference node at one end and a third contact connected to the first reference node, or one of the second reference node and the fourth contact; the third switch circuit is only connected to the first a third reference node of the reference node and a fifth contact connected to the second external terminal, between the third reference node and the sixth contact, or the third reference node and the second lamp circuit One of the seventh junctions at the other end; the diode, The other end of the pole connected to the second lamp circuit is connected to the fourth contact; the switching element has one end connected to the fourth contact and the other end connected to the second external terminal; and the switch control circuit is adapted to the fourth contact and the aforementioned The switching element is controlled by a potential difference between the second external terminals; and the control method of the LED lamp lighting device is characterized in that a potential difference between the fourth contact and the second external terminal is a predetermined reference voltage In the above case, the switching element is turned on, and a potential difference between the fourth contact and the second external terminal is The aforementioned switching element is turned off when the size is lower than the aforementioned reference voltage.
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