TWI585336B - Car LED lights power circuit, automotive LED lights power devices, automotive LED lights on the circuit control method - Google Patents

Car LED lights power circuit, automotive LED lights power devices, automotive LED lights on the circuit control method Download PDF

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TWI585336B
TWI585336B TW105108888A TW105108888A TWI585336B TW I585336 B TWI585336 B TW I585336B TW 105108888 A TW105108888 A TW 105108888A TW 105108888 A TW105108888 A TW 105108888A TW I585336 B TWI585336 B TW I585336B
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led lamp
contact
switching device
state
lighting circuit
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TW105108888A
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Chinese (zh)
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TW201641874A (en
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Toyotaka Takashima
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Shindengen Electric Manufacturing Co Ltd
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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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights

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

Description

車載LED燈通電電路、車載LED燈通電裝置、車載LED燈通電電路的控制方法Vehicle LED lamp energizing circuit, vehicle LED lamp energizing device, and vehicle LED lamp energizing circuit control method

本發明涉及一種車用LED燈點燈電路，車用LED燈點燈裝置，以及車用LED燈點燈電路的控制方法。The invention relates to a LED lamp lighting circuit for a vehicle, a LED lamp lighting device for a vehicle, and a control method for a LED lamp lighting circuit for a vehicle.

通常，LED (Light Emitting Diode)燈（Lamp）可以依靠低電壓點燈，與白熾燈（Filament）（燈泡（Bulb lamp））等相比具有壽命長，消耗電力低，反應速度快，以及耐衝擊的特點，能夠謀求小型、輕量化。因此，LED燈可以很好地適用於例如車輛的頭燈(Head lamp)等場合。In general, LED (Light Emitting Diode) lamps (Lamp) can rely on low-voltage lighting, and have a long life, low power consumption, fast response, and impact resistance compared to incandescent lamps (bulb lamps). The characteristics are small and lightweight. Therefore, the LED lamp can be suitably applied to, for example, a headlight of a vehicle.

作為像這樣的LED燈點燈裝置的一種，例如有像特開2014-69694號以及專利第5577457號所展示的LED燈點燈控制裝置。以往的這種LED點燈控制裝置中，具有對LED燈的點燈/滅燈進行控制的開關（Switch）裝置SWa（圖14）。For example, there is an LED lamp lighting control device as disclosed in Japanese Laid-Open Patent Publication No. H2014-69694 and No. 5577457. In the conventional LED lighting control device, there is provided a switch device SWa (FIG. 14) for controlling the turning on/off of the LED lamp.

這裡，例如在以往燈泡的點燈電路中，當對燈的點燈/滅燈進行控制的開關裝置SWa在截止(Off)狀態時一旦遇水，漏電流（Leakage current）就會流向開關裝置SWa。在此情況下，由於漏電流小，燈泡不會被點亮（圖13）。Here, for example, in the lighting circuit of the conventional light bulb, when the switching device SWa that controls the lighting/lighting of the lamp is in the OFF state, the leakage current flows to the switching device SWa. . In this case, the bulb will not be illuminated due to the small leakage current (Fig. 13).

但是，在上述的以往的車用LED燈點燈電路中，控制LED燈的點燈/滅燈的開關裝置SWa一旦遇水，漏電流也會流向該開關裝置SWa，這種情況下，即使漏電流小，LED元件也會發光，從而導致LED燈的錯誤點燈（圖14）。However, in the above-described conventional LED lamp lighting circuit for a vehicle, when the switch device SWa that controls the turning on/off of the LED lamp is exposed to water, the leakage current also flows to the switching device SWa. In this case, even if it leaks The current is small and the LED components will also illuminate, causing the LEDs to illuminate incorrectly (Figure 14).

所以，以往的車用LED燈點燈電路中，通過應用具備防止漏電流的外部電路的開關裝置，以及具有防水功能的開關裝置，來抑制LED燈的錯誤點燈。Therefore, in the conventional LED lamp lighting circuit for a vehicle, by using a switching device having an external circuit for preventing leakage current and a switching device having a waterproof function, erroneous lighting of the LED lamp is suppressed.

然而，由於這樣的開關裝置價格高，存在增加車用LED燈點燈電路的製造成本（cost）的問題。However, since such a switching device is expensive, there is a problem that the manufacturing cost of the LED lamp lighting circuit for a vehicle is increased.

因此，本發明的目的是提供一種不僅能夠削減成本，同時能夠對因漏電流流向控制LED燈點燈的開關從而引起的LED燈錯誤點燈進行抑制的車用LED燈點燈電路。Accordingly, it is an object of the present invention to provide a vehicular LED lighting circuit capable of suppressing LED lamp erroneous lighting caused by leakage current flowing to a switch for controlling LED lamp lighting, which can reduce cost.

按照本發明的一種形態涉及的實施例的一種車用LED燈點燈電路，對車輛上安裝的LED燈的點燈進行控制，其特徵在於，包括： 第一電阻，其一端與提供電源電壓的電源線相連接，其另一端與第一接點電連接； 第一LED燈，由至少一個以上的第一LED元件所構成，其一端與基準節點（Node）相連接，其另一端與第二接點以及接地連接的接地線相連接；以及 開關裝置，在所述基準節點與所述第一接點之間導通的第一狀態，和將所述基準節點與所述第二接點之間導通的第二狀態之間進行切換。According to an embodiment of the present invention, a vehicular LED lamp lighting circuit controls lighting of an LED lamp mounted on a vehicle, and includes: a first resistor having one end and a power supply voltage The power line is connected, the other end of which is electrically connected to the first contact; the first LED lamp is composed of at least one or more first LED elements, one end of which is connected to the reference node (Node), and the other end of which is connected to the second node. a ground connection of the contact and the ground connection; and a switching device, a first state that is conductive between the reference node and the first contact, and between the reference node and the second contact Switching between the second states of conduction.

所述車用LED燈點燈電路，其特徵在於： 其中，通過將所述開關裝置切換為所述第一狀態，使所述第一LED燈點燈， 通過將所述開關裝置切換為所述第二狀態，使所述第一LED燈的所述一端和所述另一端處於相同電位，從而使所述第一LED燈滅燈。The LED lamp lighting circuit for a vehicle, wherein: the first LED lamp is turned on by switching the switching device to the first state, and the switching device is switched to the In the second state, the one end of the first LED lamp and the other end are at the same potential, thereby turning off the first LED lamp.

所述車用LED燈點燈電路，其特徵在於，進一步包括： 電容器，其一端與所述基準節點相連接，其另一端與所述第二接點相連接， 其中，通過將所述開關裝置切換為所述第一狀態，使所述第一LED燈點燈，同時對所述電容器進行充電， 通過將所述開關裝置切換為所述第二狀態，使所述第一LED燈的所述一端與所述另一端處於相容電位，從而使所述第一LED燈滅燈，同時，使所述電容器放電，在所述基準節點與所述第二接點之間流通電流。The LED lamp lighting circuit for a vehicle, further comprising: a capacitor, one end of which is connected to the reference node, and the other end of which is connected to the second contact, wherein the switching device is Switching to the first state, lighting the first LED lamp while charging the capacitor, and switching the switching device to the second state to cause the first LED lamp to One end is at a compatible potential with the other end such that the first LED lamp is turned off, and at the same time, the capacitor is discharged, and a current flows between the reference node and the second contact.

所述車用LED燈點燈電路，其特徵在於： 所述第一接點以及所述第二接點的表面，被含有Cu（銅）或Al（鋁）的金屬所覆蓋。The LED lamp lighting circuit for a vehicle is characterized in that: the surfaces of the first contact and the second contact are covered with a metal containing Cu (copper) or Al (aluminum).

所述車用LED燈點燈電路，其特徵在於，進一步包括： 第二電阻，其一端與所述電源線相連接；以及 第二LED燈，由至少一個以上的第二LED元件所構成，其一端與所述第二電阻的另一端相連接，其另一端與所述接地線相連接。The LED lamp lighting circuit for a vehicle, further comprising: a second resistor having one end connected to the power line; and a second LED lamp composed of at least one or more second LED elements, One end is connected to the other end of the second resistor, and the other end is connected to the ground line.

所述車用LED燈點燈電路，其特徵在於： 其中，通過將所述開關裝置切換為所述第一狀態，使所述第二LED燈點燈，同時使所述第一LED燈點燈， 通過將所述開關裝置切換為所述第二狀態，使所述第二LED燈點燈，同時，使所述第一LED燈的所述一端與所述另一端處於相同電位，從而使所述第一LED燈滅燈。The LED lamp lighting circuit for a vehicle is characterized in that: by switching the switching device to the first state, the second LED lamp is turned on, and the first LED lamp is turned on at the same time Turning the second LED lamp into light by switching the switching device to the second state, and simultaneously causing the one end of the first LED lamp to be at the same potential as the other end, thereby The first LED light is turned off.

所述車用LED燈點燈電路，其特徵在於： 其中，所述開關裝置一旦遇水，漏電流會在所述第一接點與所述第二接點之間流通。The LED lamp lighting circuit for a vehicle is characterized in that: when the switching device encounters water, a leakage current flows between the first contact and the second contact.

所述車用LED燈點燈電路，其特徵在於： 其中，即使漏電流向所述開關裝置流通，通過將所述開關裝置切換為所述第二狀態，則所述第一LED燈的所述一端和所述第一LED燈的所述另一端就會處於相同電位，從而第一LED燈處不流通電流。The LED lamp lighting circuit for a vehicle, wherein: the first end of the first LED lamp is switched by switching the switching device to the second state even if a leakage current flows to the switching device The other end of the first LED lamp will be at the same potential so that no current flows at the first LED lamp.

所述車用LED燈點燈電路，其特徵在於： 其中，在所述第一接點與所述第二接點之間流通的所述漏電流的值大於能夠將所述第一LED燈點燈的驅動電流的值。The LED lamp lighting circuit for a vehicle, wherein: the value of the leakage current flowing between the first contact and the second contact is greater than a value of the first LED lamp The value of the drive current of the lamp.

所述車用LED燈點燈電路，其特徵在於： 其中，通過用戶（User）的操作，對所述第一狀態與所述第二狀態間進行切換。The LED lamp lighting circuit for a vehicle is characterized in that: the first state and the second state are switched by an operation of a user.

所述車用LED燈點燈電路，其特徵在於： 其中，所述車用LED燈點燈電路安裝在兩輪車上，所述第一LED燈以及/或是所述第二LED燈為頭燈（Head light）、轉向信號燈（Winker）、尾燈（Tail lamp）、示廓燈（Position lamp）、速度指示燈（Meter illumination）中的任一種， 所述開關裝置為用於控制所述第一LED燈點燈的所述兩輪車的機械式的手柄（Handle switch）開關。The vehicular LED lamp lighting circuit is characterized in that: the vehicular LED lamp lighting circuit is mounted on a two-wheeled vehicle, and the first LED lamp and/or the second LED lamp is a head Any one of a head light, a turner, a tail lamp, a position lamp, and a meter illumination, wherein the switch device is for controlling the first A mechanical handle (Handle switch) of the two-wheeled vehicle that is illuminated by an LED lamp.

所述車用LED燈點燈電路，其特徵在於： 其中，所述開關裝置一旦遇水，則所述第一接點以及所述第二接點遇水，從而所述第一接點與所述第二接點之間電導通並且流通漏電流。The vehicular LED lamp lighting circuit is characterized in that: when the switching device encounters water, the first contact and the second contact contact water, so that the first contact and the The second contact is electrically conductive and flows a leakage current.

所述車用LED燈點燈電路，其特徵在於： 其中，所述電源電壓的值被控制在穩定的值。The LED lamp lighting circuit for a vehicle is characterized in that: the value of the power supply voltage is controlled to a stable value.

所述車用LED燈點燈電路，其特徵在於： 其中，第一電阻在所述的第一狀態中，電阻值被設定為從提供所述電源電壓的所述電源線向所述第一LED燈提供的驅動電流成為被預先設定的第一規定值， 第二電阻的電阻值被設定為從提供所述電源電壓的所述電源線向所述第二LED燈提供的驅動電流成為被預先設定的第二規定值。The LED lamp lighting circuit for a vehicle, wherein: the first resistor is in the first state, the resistance value is set to be from the power supply line providing the power supply voltage to the first LED The driving current supplied from the lamp becomes a predetermined first predetermined value, and the resistance value of the second resistor is set such that the driving current supplied from the power supply line supplying the power supply voltage to the second LED lamp is preset The second specified value.

所述車用LED燈點燈電路，其特徵在於： 其中，所述第一LED燈的所述一端連接有所述第一LED元件的陽極側，所述第一LED燈的所述另一端連接有所述第一LED元件的陰極側。The vehicular LED lamp lighting circuit is characterized in that: the one end of the first LED lamp is connected to the anode side of the first LED element, and the other end of the first LED lamp is connected There is a cathode side of the first LED element.

按照本發明的一種形態涉及的實施例的一種車用LED燈點燈裝置，對車輛上安裝的LED燈的點燈進行控制，其特徵在於，包括： 第一電阻，其一端與電源線相連接，其另一端與第一接點電連接； 第一LED燈，由至少一個以上的第一LED元件所構成，其一端與基準節點相連接，其另一端與第二接點以及接地連接的接地線相連接； 開關裝置，在所述基準節點與所述第一接點之間導通的第一狀態，和將所述基準節點與所述第二接點之間導通的第二狀態之間進行切換；以及 電源電路，向所述電源線提供穩定的電源電壓。According to an embodiment of the present invention, a vehicular LED lamp lighting device controls lighting of an LED lamp mounted on a vehicle, and includes: a first resistor, one end of which is connected to a power line The other end is electrically connected to the first contact; the first LED lamp is composed of at least one or more first LED elements, one end of which is connected to the reference node, and the other end of which is connected to the second contact and the ground of the ground. a line connection; a switching device, a first state in which a conduction between the reference node and the first contact is performed, and a second state in which a conduction between the reference node and the second contact is performed Switching; and a power supply circuit that supplies a stable supply voltage to the power line.

按照本發明的一種形態涉及的實施例的一種車用LED燈點燈電路的控制方法，對車輛上安裝的LED燈的點燈進行控制，其特徵在於： 在包括第一電阻，其一端與提供電源電壓的電源線相連接，其另一端與第一接點電連接；第一LED燈，由至少一個以上的第一LED元件所構成，其一端與基準節點相連接，其另一端與第二接點以及接地連接的接地線相連接；以及開關裝置，在所述基準節點與所述第一接點之間導通的第一狀態，和將所述基準節點與所述第二接點之間導通的第二狀態之間進行切換車用LED燈點燈電路的控制方法中， 通過將所述開關裝置切換為所述第一狀態，使所述第一LED燈點燈， 通過將所述開關裝置切換為所述第二狀態，使所述第一LED燈的所述一端和所述另一端處於相同電位，從而使所述第一LED燈滅燈。 [發明效果]A method for controlling a LED lamp lighting circuit for a vehicle according to an embodiment of the present invention, wherein the lighting of the LED lamp mounted on the vehicle is controlled, wherein: the first resistor is included, and one end thereof is provided The power supply line is connected to the power line, and the other end is electrically connected to the first contact; the first LED lamp is composed of at least one or more first LED elements, one end of which is connected to the reference node, and the other end of which is connected to the second node. a ground connection of the contact and the ground connection; and a switching device, a first state that is conductive between the reference node and the first contact, and between the reference node and the second contact In the method of controlling the LED lamp lighting circuit for switching between the second states of conduction, the first LED lamp is turned on by switching the switching device to the first state, and the switch is turned on The device switches to the second state such that the one end of the first LED lamp and the other end are at the same potential, thereby causing the first LED to turn off. [Effect of the invention]

按照本發明的一種形態涉及的實施例的一種車用LED燈點燈電路，對車輛上安裝的LED燈的點燈進行控制，其包括：第一電阻，其一端與被提供電源電壓的電源線相連接，其另一端與第一接點相連接；第一LED燈，由至少一個以上的第一LED元件所構成，其一端與基準節點TB相連接，其另一端與第二接點T2以及已接地的接地線相連接；以及，開關裝置，在基準節點TB與第一接點之間導通的第一狀態，和基準節點TB與第二接點T2之間導通的第二狀態之間進行切換。According to an embodiment of the present invention, a vehicular LED lamp lighting circuit controls lighting of an LED lamp mounted on a vehicle, and includes: a first resistor having one end and a power cord supplied with a power supply voltage Connected to the other end and connected to the first contact; the first LED lamp is composed of at least one or more first LED elements, one end of which is connected to the reference node TB, and the other end of which is connected with the second contact T2 and The grounded ground wire is connected; and the switching device is in a first state in which the reference node TB is electrically connected to the first contact, and a second state in which the reference node TB is connected to the second contact T2. Switch.

該車用LED燈點燈電路中，通過將開關裝置切換為第一狀態，則來自電源線的驅動電流供給到第一LED燈，從而第一LED燈點燈。另一方面，通過將開關裝置切換為第二狀態，則第一LED燈的一端與另一端之間短路並變為相同電位，從而第一LED燈滅燈。In the LED lamp lighting circuit for a vehicle, when the switching device is switched to the first state, the driving current from the power source line is supplied to the first LED lamp, and the first LED lamp is turned on. On the other hand, by switching the switching device to the second state, the one end of the first LED lamp is short-circuited and becomes the same potential, so that the first LED lamp is turned off.

通過這樣，例如，車用LED燈點燈電路被適用於兩輪車的情況下，當開關裝置遇水導致漏電流流通時，也能夠更切實地將LED燈滅燈。In this way, for example, when the vehicle LED lighting circuit is applied to a two-wheeled vehicle, when the switching device encounters water and causes leakage current to flow, the LED lamp can be more reliably turned off.

而且，當開關裝置遇水，即使開關裝置的第一接點與第二接點T2之間流通漏電流的狀態下，通過將開關裝置切換為第二狀態，則第一LED燈的一端與另一端之間處於相同電位，從而第一LED燈處不流通電流。Moreover, when the switching device is in contact with water, even if the leakage current flows between the first contact of the switching device and the second contact T2, by switching the switching device to the second state, one end of the first LED lamp and the other The same potential is at one end so that no current flows at the first LED lamp.

通過這樣，開關裝置就不需要具備防止漏電流的外部電路或防水功能，能夠使用低價格的開關裝置。因此，就能夠削減車用LED燈點燈電路的製造成本。In this way, the switching device does not need to have an external circuit or a waterproof function for preventing leakage current, and a low-cost switching device can be used. Therefore, it is possible to reduce the manufacturing cost of the LED lamp lighting circuit for a vehicle.

因此，根據本發明涉及的車用LED燈點燈電路，在削減製造成本的同時，能夠抑制由於漏電流流通控制LED燈點燈的開關裝置處而導致的LED燈的錯誤點燈。Therefore, according to the LED lamp lighting circuit for a vehicle according to the present invention, it is possible to suppress the erroneous lighting of the LED lamp due to the leakage current flowing through the switching device for controlling the lighting of the LED lamp while reducing the manufacturing cost.

下面參照附圖，對本發明所涉及的各實施方式進行說明。 [第一實施方式]Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment]

第一實施方式涉及的車用LED燈點燈電路100對兩輪車等的車輛（未圖示）上安裝的LED燈的點燈進行控制（圖1）。再有，圖1所示例為開關裝置SW中，基準節點TB未與第一、第二接點T1、T2相連接的狀態。The vehicle LED lamp lighting circuit 100 according to the first embodiment controls lighting of an LED lamp mounted on a vehicle (not shown) such as a two-wheeled vehicle (FIG. 1). Further, the example shown in FIG. 1 is a state in which the reference node TB is not connected to the first and second contacts T1 and T2 in the switching device SW.

該車用LED燈點燈電路100包括（圖1）：第一電阻R1，其一端與電源線VCC相連接，其另一端與第一接點T1相連接；第一LED燈L1，其一端與基準節點TB相連接，其另一端與第二接點T2以及接地線GND相連接；以及，開關裝置SW，對流通第一LED燈L1的電流進行控制。The vehicle LED lighting circuit 100 includes (FIG. 1): a first resistor R1 having one end connected to the power line VCC and the other end connected to the first contact T1; the first LED L1, one end of which is The reference node TB is connected, the other end of which is connected to the second contact T2 and the ground line GND, and the switching device SW controls the current flowing through the first LED lamp L1.

該車用LED燈點燈電路100例如安裝在已述的兩輪車等的車輛上。The vehicle lamp lighting circuit 100 is mounted, for example, on a vehicle such as a two-wheeled vehicle.

電源線VCC被提供電源電壓。再有，該電源電壓的值被控制為穩定的值。The power supply line VCC is supplied with a power supply voltage. Further, the value of the power supply voltage is controlled to a stable value.

接地線GND接地連接。再有，該接地的電位並非被限定為0V，而是被設定為至少能夠將LED燈點燈的低於電源電壓的固定的電位。Ground wire GND is grounded. Further, the potential of the ground is not limited to 0 V, but is set to a fixed potential lower than the power supply voltage at which the LED lamp can be lit.

另外，第一LED燈L1至少由一個以上的第一LED元件D1所構成。並且，第一LED燈L1的一端與第一LED元件D1的陽極側相連接，第一LED燈L1的另一端與第一LED元件D1的陰極側相連接。再有，圖1中的構成例為第一LED燈L1由兩個第一LED元件D1相串聯而成。Further, the first LED lamp L1 is composed of at least one or more first LED elements D1. Further, one end of the first LED lamp L1 is connected to the anode side of the first LED element D1, and the other end of the first LED lamp L1 is connected to the cathode side of the first LED element D1. Further, in the configuration example of Fig. 1, the first LED lamp L1 is formed by connecting two first LED elements D1 in series.

該第一LED燈L1例如為已述的兩輪車的頭燈、轉向信號燈、尾燈、示廓燈、速度指示燈中的任一種。The first LED lamp L1 is, for example, any of a headlight, a turn signal lamp, a tail light, a position light, and a speed indicator of the two-wheeled vehicle.

另外，開關裝置SW在基準節點TB和第一接點T1之間導通的第一狀態（圖2），與基準節點TB和第二接點T2之間導通的第二狀態（圖3）之間進行切換。再有，第一接點T1，以及第二接點T2的表面例如被含有Cu（銅）或是Al（鋁）的金屬所覆蓋。In addition, a first state (FIG. 2) in which the switching device SW is turned on between the reference node TB and the first contact T1, and a second state (FIG. 3) in conduction between the reference node TB and the second contact T2 Switch. Further, the surfaces of the first contact T1 and the second contact T2 are covered with, for example, a metal containing Cu (copper) or Al (aluminum).

例如，通過將開關裝置SW切換為第一狀態，從而電流I1流通第一LED燈L1，使第一LED燈L1點燈（圖3）。For example, by switching the switching device SW to the first state, the current I1 flows through the first LED lamp L1, and the first LED lamp L1 is turned on (FIG. 3).

該開關裝置SW例如通過使用者的操作，在已述的第一狀態和第二狀態之間進行切換。The switching device SW switches between the first state and the second state already described, for example, by a user's operation.

開關裝置SW例如為用於對第一LED燈L1的點燈進行控制的已述的兩輪車的機械式的手柄開關（Handle switch）。再有，該開關裝置SW具有較簡易的構造，例如設有用於防止漏電流IX的外部電路或防水功能。The switching device SW is, for example, a mechanical handle switch of the above-described two-wheeled vehicle for controlling the lighting of the first LED lamp L1. Further, the switching device SW has a relatively simple configuration, for example, an external circuit or a waterproof function for preventing leakage current IX.

因此，開關裝置SW遇水後，導致第一接點T1以及第二接點T2遇水，從而第一接點T1與第二接點T2之間形成電導通（由於水的阻抗RX而連接）並流通漏電流IX（圖4）。像這樣，漏電流IX就可能流通開關裝置SW處。Therefore, after the switch device SW meets the water, the first contact T1 and the second contact T2 are exposed to water, so that electrical conduction is formed between the first contact T1 and the second contact T2 (connected due to the water resistance RX) And the leakage current IX (Figure 4). In this way, the leakage current IX may flow through the switching device SW.

例如，在開關裝置SW的第一接點T1與第二接點T2之間流通的漏電流IX的值，有時會大於能夠使第一LED燈L1點燈的驅動電流的值。For example, the value of the leakage current IX flowing between the first contact T1 and the second contact T2 of the switching device SW may be larger than the value of the driving current that can turn on the first LED lamp L1.

此時，假如一旦該漏電流IX流通第一LED燈L1處，則第一LED燈L1可能被錯誤點燈。然而，即使變為開關裝置SW處流通漏電流IX的狀態下，通過將開關裝置SW切換為第二狀態，則第一LED燈L1的一端與另一端變為相同電位，從而第一LED燈L1處不流通電流。At this time, if the leakage current IX flows through the first LED lamp L1, the first LED lamp L1 may be erroneously lit. However, even in a state where the leakage current IX flows in the switching device SW, by switching the switching device SW to the second state, one end and the other end of the first LED lamp L1 become the same potential, so that the first LED lamp L1 No current flows.

即，能夠抑制由於漏電流IX流通開關裝置SW處而導致的第一LED燈L1的錯誤點燈。That is, it is possible to suppress erroneous lighting of the first LED lamp L1 due to leakage current IX flowing through the switching device SW.

另外，如已述般，第一電阻R1的一端與電源線VCC相連接，另一端與第一接點T1相連接。Further, as described above, one end of the first resistor R1 is connected to the power supply line VCC, and the other end is connected to the first contact T1.

該第一電阻R1在已述的第一狀態下，電阻值被設定為從提供電源電壓的電源線VCC向第一LED燈L1提供的驅動電流成為被預先設定的第一規定值。In the first state described above, the first resistor R1 is set such that the drive current supplied from the power supply line VCC for supplying the power supply voltage to the first LED lamp L1 becomes a predetermined first predetermined value.

通過這樣，在電源電壓的值被控制在所定的穩定的值的情況下，通過將開關裝置SW切換為第一狀態，第一LED燈L1被提供所述第一規定值的驅動電流，從而第一LED燈L1以規定的亮度點燈。Thus, when the value of the power supply voltage is controlled to a predetermined stable value, by switching the switching device SW to the first state, the first LED lamp L1 is supplied with the drive current of the first predetermined value, thereby An LED lamp L1 is lit with a predetermined brightness.

接下來，就具有上述構成的車用LED燈點燈電路100的控制方法的一例進行說明。Next, an example of a method of controlling the vehicle LED lamp lighting circuit 100 having the above configuration will be described.

如已述的例如開關裝置SW通過使用者的操作，切換為基準節點TB和第一接點T1之間導通的第一狀態（圖2）。通過這樣，電流流通第一LED燈L1處，從而使第一LED燈L1點燈（圖2）。As already described, for example, the switching device SW is switched by the user's operation to a first state (Fig. 2) in which conduction between the reference node TB and the first contact T1 is made. By this, current flows through the first LED lamp L1, thereby lighting the first LED lamp L1 (Fig. 2).

另一方面，開關裝置SW通過使用者的操作，切換為基準節點TB和第二接點T2之間導通的第二狀態（圖3）。通過這樣，第一LED燈L1的一端與另一端變為相同電位（即，第一LED燈L1處不流通電流），從而使第一LED燈L1滅燈（圖3）。On the other hand, the switching device SW is switched to the second state (Fig. 3) in which the reference node TB and the second contact T2 are turned on by the user's operation. By this, one end of the first LED lamp L1 becomes the same potential as the other end (that is, no current flows at the first LED lamp L1), thereby turning off the first LED lamp L1 (FIG. 3).

此處，由於屬於機械式的手柄開關的開關裝置SW遇水，則第一接點T1以及第二接點T2遇水，從而第一接點T1與第二接點T2之間形成電導通（由於水的阻抗RX而連接）並流通漏電流IX（圖4）。Here, since the switching device SW belonging to the mechanical handle switch is in contact with water, the first contact T1 and the second contact T2 are in contact with water, so that electrical conduction is formed between the first contact T1 and the second contact T2 ( The leakage current IX is connected due to the impedance RX of the water (Fig. 4).

此情況下，通過將開關裝置SW切換為第二狀態，則第一LED燈L1的一端與另一端變為相同電位，從而第一LED燈L1處不流通電流。In this case, by switching the switching device SW to the second state, one end of the first LED lamp L1 and the other end have the same potential, so that no current flows at the first LED lamp L1.

即，能夠抑制由於漏電流IX流通開關裝置SW處而導致的第一LED燈L1的錯誤點燈。That is, it is possible to suppress erroneous lighting of the first LED lamp L1 due to leakage current IX flowing through the switching device SW.

如上述般，按照本發明的一種形態涉及的車用LED燈點燈電路100，對車輛上安裝的LED燈的點燈進行控制，其包括：第一電阻R1，其一端與被提供電源電壓的電源線相連接，其另一端與第一接點T1相連接；第一LED燈L1，由至少一個以上的第一LED元件D1所構成，其一端與基準節點TB相連接，其另一端與第二接點T2以及已接地的接地線GND相連接；以及，開關裝置SW，在基準節點TB與第一接點T1之間導通的第一狀態，和基準節點TB與第二接點T2之間導通的第二狀態之間進行切換。As described above, the LED lamp lighting circuit 100 for a vehicle according to an aspect of the present invention controls the lighting of the LED lamp mounted on the vehicle, and includes: a first resistor R1 having one end and a power supply voltage supplied thereto The power line is connected, the other end of which is connected to the first contact T1; the first LED lamp L1 is composed of at least one or more first LED elements D1, one end of which is connected to the reference node TB, and the other end is connected to the first node The second contact T2 and the grounded ground GND are connected; and the switching device SW is in a first state in which the reference node TB is electrically connected to the first contact T1, and between the reference node TB and the second contact T2 Switching between the second states of conduction.

該車用LED燈點燈電路中，通過將開關裝置SW切換為第一狀態，驅動電流被從電源線提供給第一LED燈L1處，從而第一LED燈L1點燈。In the LED lamp lighting circuit for a vehicle, by switching the switching device SW to the first state, the driving current is supplied from the power supply line to the first LED lamp L1, so that the first LED lamp L1 is turned on.

另一方面，通過將開關裝置SW切換為第二狀態，則第一LED燈L1的一端與另一端之間短路並變為相同電位，從而第一LED燈L1滅燈。On the other hand, by switching the switching device SW to the second state, the one end and the other end of the first LED lamp L1 are short-circuited and become the same potential, so that the first LED lamp L1 is turned off.

通過這樣，例如，車用LED燈點燈電路100被適用於兩輪車等車輛的情況下，當開關裝置SW遇水導致漏電流IX流通時，也能夠更切實地將LED燈滅燈。In this way, for example, when the vehicle LED lighting circuit 100 is applied to a vehicle such as a two-wheeled vehicle, when the switching device SW is exposed to water and the leakage current IX flows, the LED lamp can be more reliably turned off.

並且，開關裝置SW遇水後，即使開關裝置SW的第一接點T1與第二接點T2之間變為流通漏電流IX的狀態，開關裝置SW也已被切換為了第二狀態。通過這樣，第一LED燈L1的一端與另一端變為相同電位，第一LED燈L1處不流通電流。When the switching device SW is in contact with water, even if the leakage current IX flows between the first contact T1 and the second contact T2 of the switching device SW, the switching device SW is switched to the second state. Thus, one end of the first LED lamp L1 and the other end have the same potential, and no current flows through the first LED lamp L1.

通過這樣，如所述般，開關裝置SW就不需要用於防止漏電流IX的外部電路或是防水功能，從而 能夠使用低價的開關裝置SW。因此，就可以削減車用LED燈點燈電路的製造成本。Thus, as described above, the switching device SW does not require an external circuit for preventing the leakage current IX or a waterproof function, so that the low-cost switching device SW can be used. Therefore, it is possible to reduce the manufacturing cost of the LED lamp lighting circuit for a vehicle.

因此，根據本實施方式涉及的車用LED燈點燈電路，在削減製造成本的同時，能夠抑制由於漏電流流通控制LED燈點燈的開關裝置處而導致的LED燈的錯誤點燈。    [第二實施方式]Therefore, according to the LED lamp lighting circuit for a vehicle according to the present embodiment, it is possible to suppress the erroneous lighting of the LED lamp due to the leakage current flowing through the switching device for controlling the lighting of the LED lamp while reducing the manufacturing cost. [Second Embodiment]

本發明第二實施方式中，就車用LED燈點燈電路的其他構成例進行說明。In the second embodiment of the present invention, another configuration example of the LED lamp lighting circuit for a vehicle will be described.

第二實施方式涉及的車用LED燈點燈電路200與第一實施方式一樣，對兩輪車等的車輛（未圖示）上安裝的LED燈的點燈進行控制（圖5）。再有，圖5所示例為開關裝置SW中，基準節點TB未與第一、第二接點T1、T2相連接的狀態。另外，圖5中與圖1相同的符號表示與第一實施方式相同的構成。The LED lamp lighting circuit 200 for a vehicle according to the second embodiment controls the lighting of the LED lamp mounted on a vehicle (not shown) such as a two-wheeled vehicle as in the first embodiment (FIG. 5). Further, the example shown in FIG. 5 is a state in which the reference node TB is not connected to the first and second contacts T1 and T2 in the switching device SW. In FIG. 5, the same reference numerals as those in FIG. 1 denote the same configurations as those of the first embodiment.

該車用LED燈點燈電路200包括（圖5）：第一電阻R1，其一端與電源線VCC相連接，其另一端與第一接點T1相連接；第一LED燈L1，其一端與基準節點TB相連接，其另一端與第二接點T2以及接地線GND相連接；開關裝置SW，對流通第一LED燈L1的電流進行控制；第二電阻R2，其一端與電源線VCC相連接；以及，第二LED燈L2，其一端與第二電阻R2的另一端相連接，其另一端與接地線GND相連接。The vehicle LED lighting circuit 200 includes (FIG. 5): a first resistor R1 having one end connected to the power line VCC and the other end connected to the first contact T1; the first LED L1, one end of which is The reference node TB is connected, the other end of which is connected to the second contact T2 and the ground line GND; the switching device SW controls the current flowing through the first LED lamp L1; and the second resistor R2 has one end connected to the power line VCC And a second LED lamp L2 having one end connected to the other end of the second resistor R2 and the other end connected to the ground line GND.

即，該車用LED燈點燈電路200與圖1所示的第一實施方式的車用LED燈點燈電路100相比，進一步包括第二電阻R2、以及第二LED燈L2。That is, the vehicle LED lamp lighting circuit 200 further includes a second resistor R2 and a second LED lamp L2 as compared with the vehicle LED lamp lighting circuit 100 of the first embodiment shown in FIG. 1 .

第二LED燈L2至少由一個以上的第二LED元件D2所構成。並且，第二LED燈L2的一端與第二LED元件D2的陽極側相連接，第二LED燈L2的另一端與第二LED元件D2的陰極側相連接。再有，圖5中的構成例為第二LED燈L2由兩個第二LED元件D2相串聯而成。The second LED lamp L2 is composed of at least one or more second LED elements D2. Further, one end of the second LED lamp L2 is connected to the anode side of the second LED element D2, and the other end of the second LED lamp L2 is connected to the cathode side of the second LED element D2. Further, in the configuration example of FIG. 5, the second LED lamp L2 is formed by connecting two second LED elements D2 in series.

該第二LED燈L2例如為已述的兩輪車的頭燈、轉向信號燈、尾燈、示廓燈、速度指示燈中的一種。The second LED lamp L2 is, for example, one of a headlight, a turn signal lamp, a tail light, a position light, and a speed indicator of the two-wheeled vehicle.

另外，開關裝置SW與第一實施方式一樣，在基準節點TB和第一接點T1之間導通的第一狀態（圖6），與基準節點TB和第二接點T2之間導通的第二狀態（圖7）之間進行切換。Further, the switching device SW is the same as the first embodiment, the first state (FIG. 6) that is electrically connected between the reference node TB and the first contact T1, and the second state that is electrically connected between the reference node TB and the second contact T2. Switch between states (Figure 7).

通過將開關裝置SW切換為第一狀態，從而電流I2流通第二LED燈L2，使第二LED燈L2點燈，同時，電流I1流通第一LED燈L1，使第一LED燈L1點燈（圖6）。By switching the switching device SW to the first state, the current I2 flows through the second LED lamp L2, and the second LED lamp L2 is turned on. At the same time, the current I1 flows through the first LED lamp L1, causing the first LED lamp L1 to light up ( Figure 6).

另一方面，通過將開關裝置SW切換為第二狀態，從而電流I2流通第二LED燈L2，使第二LED燈L2點燈，同時，第一LED燈L1的一端與另一端變為相同電位（即，使第一LED燈L1處不流通電流），從而使第一LED燈L1滅燈（圖7）。On the other hand, by switching the switching device SW to the second state, the current I2 flows through the second LED lamp L2, and the second LED lamp L2 is turned on, and at the same time, one end of the first LED lamp L1 becomes the same potential as the other end. (ie, no current flows through the first LED lamp L1), thereby turning off the first LED lamp L1 (FIG. 7).

此處，與第一實施方式一樣，由於開關裝置SW遇水，導致第一接點T1以及第二接點T2遇水，從而第一接點T1與第二接點T2之間形成電導通（由於水的阻抗RX而連接）並流通漏電流IX（圖8），像這樣，開關裝置SW處就可能流通漏電流IX。Here, as in the first embodiment, since the switching device SW is in contact with water, the first contact T1 and the second contact T2 are exposed to water, so that electrical conduction is formed between the first contact T1 and the second contact T2 ( The leakage current IX (Fig. 8) flows due to the impedance RX of the water, and as such, the leakage current IX may flow through the switching device SW.

例如，在開關裝置SW的第一接點T1與第二接點T2之間流通的漏電流IX的值，有時會大於能夠使第一LED燈L1點燈的驅動電流的值。For example, the value of the leakage current IX flowing between the first contact T1 and the second contact T2 of the switching device SW may be larger than the value of the driving current that can turn on the first LED lamp L1.

此時，假如一旦該漏電流IX流通第一LED燈L1處，則第一LED燈L1可能被錯誤點燈。然而，即使變為開關裝置SW處流通漏電流IX的狀態下，通過將開關裝置SW切換為第二狀態，則第一LED燈L1的一端與另一端變為相同電位，從而第一LED燈L1處不流通電流。At this time, if the leakage current IX flows through the first LED lamp L1, the first LED lamp L1 may be erroneously lit. However, even in a state where the leakage current IX flows in the switching device SW, by switching the switching device SW to the second state, one end and the other end of the first LED lamp L1 become the same potential, so that the first LED lamp L1 No current flows.

即，能夠抑制由於漏電流IX流通開關裝置SW處而導致的第一LED燈L1的錯誤點燈。That is, it is possible to suppress erroneous lighting of the first LED lamp L1 due to leakage current IX flowing through the switching device SW.

另外，如所述般，第二電阻R2的其一端與電源線VCC相連接，第二電阻R2的另一端與第二LED燈L2的一端相連接。Further, as described above, one end of the second resistor R2 is connected to the power supply line VCC, and the other end of the second resistor R2 is connected to one end of the second LED lamp L2.

並且，與第一實施方式一樣，第一電阻R1在已述的第一狀態下，電阻值被設定為從提供電源電壓的電源線VCC向第一LED燈L1提供的驅動電流成為被預先設定的第一規定值。Further, as in the first embodiment, in the first state described above, the first resistor R1 is set such that the drive current supplied from the power supply line VCC supplying the power supply voltage to the first LED lamp L1 is set in advance. The first specified value.

通過這樣，在電源電壓的值被控制在所定的穩定的值的情況下，通過將開關裝置SW切換為第一狀態，第一LED燈L1被提供所述第一規定值的驅動電流，從而第一LED燈L1以規定的亮度點燈。Thus, when the value of the power supply voltage is controlled to a predetermined stable value, by switching the switching device SW to the first state, the first LED lamp L1 is supplied with the drive current of the first predetermined value, thereby An LED lamp L1 is lit with a predetermined brightness.

進一步的，第二電阻R2的電阻值被設定為從提供電源電壓的電源線VCC向第二LED燈L2提供的驅動電流成為被預先設定的第二規定值。Further, the resistance value of the second resistor R2 is set such that the drive current supplied from the power supply line VCC that supplies the power supply voltage to the second LED lamp L2 becomes a second predetermined value that is set in advance.

通過這樣，在電源電壓的值被控制在所定的穩定的值的情況下，無論第一LED燈L1的是否點燈以及是否存在漏電流IX，第二LED燈L2都會被提供所述第二規定值的驅動電流，從而第二LED燈L2以規定的亮度點燈。By doing so, in the case where the value of the power supply voltage is controlled to a predetermined stable value, the second LED lamp L2 is supplied with the second regulation regardless of whether or not the first LED lamp L1 is turned on and whether or not the leakage current IX is present. The value drives the current so that the second LED lamp L2 is lit with a prescribed brightness.

再有，圖5所示車用LED燈點燈電路200的其他的構成，與圖1所示車用LED燈點燈電路100相同。The other configuration of the vehicle LED lamp lighting circuit 200 shown in Fig. 5 is the same as that of the vehicle LED lamp lighting circuit 100 shown in Fig. 1 .

接下來，對具有上述構成的車用LED燈點燈電路200的控制方法的一例進行說明。Next, an example of a method of controlling the vehicle LED lamp lighting circuit 200 having the above configuration will be described.

如已述般，例如，開關裝置SW例如通過使用者的操作，切換為基準節點TB與第一接點T1之間導通的第一狀態（圖6）。As described above, for example, the switching device SW is switched to a first state in which conduction between the reference node TB and the first contact T1 is performed, for example, by a user's operation (FIG. 6).

通過這樣，電流I2流通第二LED燈L2，使第二LED燈L2點燈，同時，電流I1流通第一LED燈L1，使第一LED燈L1點燈（圖6）。Thus, the current I2 flows through the second LED lamp L2, and the second LED lamp L2 is turned on. At the same time, the current I1 flows through the first LED lamp L1, and the first LED lamp L1 is turned on (FIG. 6).

另一方面，開關裝置SW例如通過使用者的操作，切換為基準節點TB與第二接點T2之間導通的第二狀態（圖7）。On the other hand, the switching device SW is switched to a second state in which conduction between the reference node TB and the second contact T2 is performed by, for example, a user operation (FIG. 7).

通過這樣，電流I2流通第二LED燈L2，使第二LED燈L2點燈，同時，第一LED燈L1的一端與另一端變為相同電位（即，使第一LED燈L1處不流通電流），從而使第一LED燈L1滅燈（圖7）。In this way, the current I2 flows through the second LED lamp L2, and the second LED lamp L2 is turned on, and at the same time, one end of the first LED lamp L1 and the other end become the same potential (that is, the current does not flow at the first LED lamp L1). ), thereby turning off the first LED lamp L1 (Fig. 7).

此處，作為機械式手柄開關的開關裝置SW遇水後，導致第一接點T1以及第二接點T2遇水，從而第一接點T1與第二接點T2之間形成電導通（由於水的阻抗RX而連接）並流通漏電流IX（圖8）。Here, the switch device SW, which is a mechanical handle switch, contacts the water, causing the first contact T1 and the second contact T2 to meet water, so that electrical conduction is formed between the first contact T1 and the second contact T2 (due to The water impedance RX is connected) and the leakage current IX flows (Fig. 8).

此情況下，通過將開關裝置SW切換為第二狀態，第一LED燈L1的一端與另一端變為相同電位，從而第一LED燈L1處不流通電流。In this case, by switching the switching device SW to the second state, one end of the first LED lamp L1 and the other end become the same potential, so that no current flows at the first LED lamp L1.

即，能夠抑制由於漏電流IX流通開關裝置SW處而導致的第一LED燈L1的錯誤點燈。That is, it is possible to suppress erroneous lighting of the first LED lamp L1 due to leakage current IX flowing through the switching device SW.

再有，車用LED燈點燈電路200的其他的運作，與第一實施方式所示的車用LED燈點燈電路100的運作相同。The other operation of the vehicle LED lamp lighting circuit 200 is the same as that of the vehicle LED lamp lighting circuit 100 shown in the first embodiment.

即，與第一實施方式一樣，車用LED燈點燈電路200被適用於兩輪車等車輛的情況下，當開關裝置SW遇水導致漏電流IX流通時，也能夠更切實地將LED燈滅燈。In other words, when the vehicle LED lamp lighting circuit 200 is applied to a vehicle such as a two-wheeled vehicle as in the first embodiment, when the switching device SW is exposed to water and the leakage current IX is distributed, the LED lamp can be more reliably Lights off.

並且，開關裝置SW遇水後，即使開關裝置SW的第一接點T1與第二接點T2之間變為流通漏電流IX的狀態，開關裝置SW也已被切換為了第二狀態。通過這樣，第一LED燈L1的一端與另一端變為相同電位，第一LED燈L1處不流通電流。When the switching device SW is in contact with water, even if the leakage current IX flows between the first contact T1 and the second contact T2 of the switching device SW, the switching device SW is switched to the second state. Thus, one end of the first LED lamp L1 and the other end have the same potential, and no current flows through the first LED lamp L1.

通過這樣，如所述般，開關裝置SW就不需要用於防止漏電流IX的外部電路或是防水功能，從而 能夠使用低價的開關裝置SW。因此，就可以削減車用LED燈點燈電路的製造成本。Thus, as described above, the switching device SW does not require an external circuit for preventing the leakage current IX or a waterproof function, so that the low-cost switching device SW can be used. Therefore, it is possible to reduce the manufacturing cost of the LED lamp lighting circuit for a vehicle.

因此，根據本實施方式涉及的車用LED燈點燈電路，在削減製造成本的同時，能夠抑制由於漏電流流通控制LED燈點燈的開關裝置處而導致的LED燈的錯誤點燈。    [第三實施方式]Therefore, according to the LED lamp lighting circuit for a vehicle according to the present embodiment, it is possible to suppress the erroneous lighting of the LED lamp due to the leakage current flowing through the switching device for controlling the lighting of the LED lamp while reducing the manufacturing cost. [Third embodiment]

已述的第一實施方式中，即使開關裝置SW在基準節點TB與第一接點T1之間導通的第一狀態，與基準節點TB與第二接點T2之間導通的第二狀態之間進行切換，只要漏電流不流通的話，第二接點T2處就不流通電流。此情況下，第二接點T2表面的金屬發生氧化，或者被絕緣物附著等時，第二接點T2就有可能產生絕緣不良。In the first embodiment described above, even if the switching device SW is in a first state in which the reference node TB is electrically connected to the first contact T1, and between the second state in which the reference node TB and the second contact T2 are turned on Switching is performed so that no current flows at the second contact T2 as long as the leakage current does not flow. In this case, when the metal on the surface of the second contact T2 is oxidized or adhered by an insulator or the like, the second contact T2 may cause insulation failure.

此處，將就該第三實施方式中，通過使開關裝置的第二接點處流通電流，來抑制第二接點的氧化以及絕緣物的附著，從而能夠對第二接點的絕緣不良進行抑制的車用LED燈點燈電路的構成進行說明。Here, in the third embodiment, by causing a current to flow through the second contact of the switching device, oxidation of the second contact and adhesion of the insulator are suppressed, and insulation failure of the second contact can be performed. The configuration of the suppressed LED lamp lighting circuit for the vehicle will be described.

第三實施方式涉及的車用LED燈點燈電路300與第一實施方式一樣，對兩輪車等的車輛（未圖示）上安裝的LED燈的點燈進行控制（圖9）。再有，圖9所示例為開關裝置SW中，基準節點TB未與第一、第二接點T1、T2相連接的狀態。另外，圖9中與圖1相同的符號表示與第一實施方式相同的構成。Similarly to the first embodiment, the LED lamp lighting circuit 300 for a vehicle according to the third embodiment controls lighting of an LED lamp mounted on a vehicle (not shown) such as a two-wheeled vehicle (FIG. 9). Further, the example shown in FIG. 9 is a state in which the reference node TB is not connected to the first and second contacts T1 and T2 in the switching device SW. In FIG. 9, the same reference numerals as those in FIG. 1 denote the same configurations as those of the first embodiment.

該車用LED燈點燈電路300包括（圖9）：第一電阻R1，其一端與電源線VCC相連接，其另一端與第一接點T1相連接；第一LED燈L1，其一端與基準節點TB相連接，其另一端與第二接點T2以及接地線GND相連接；開關裝置SW，對流通第一LED燈L1的電流進行控制；以及，電容器C1，其一端與基準節點TB相連接，其另一端與第二接點T2相連接。The vehicle LED lighting circuit 300 includes (FIG. 9): a first resistor R1 having one end connected to the power line VCC and the other end connected to the first contact T1; the first LED L1, one end of which is The reference node TB is connected, the other end of which is connected to the second contact T2 and the ground line GND; the switching device SW controls the current flowing through the first LED lamp L1; and the capacitor C1 has one end connected to the reference node TB. The other end of the connection is connected to the second contact T2.

即，該車用LED燈點燈電路300與圖1所示的第一實施方式的車用LED燈點燈電路100相比，進一步包括電容器C1。That is, the vehicle LED lighting circuit 300 further includes a capacitor C1 as compared with the vehicle LED lighting circuit 100 of the first embodiment shown in FIG. 1 .

如已述般，電容器C1，其一端與基準節點TB相連接，其另一端與第二接點T2相連接。As already described, the capacitor C1 has one end connected to the reference node TB and the other end connected to the second contact T2.

另外，開關裝置SW與第一實施方式一樣，在基準節點TB和第一接點T1之間導通的第一狀態（圖10），與基準節點TB和第二接點T2之間導通的第二狀態（圖11）之間進行切換。另外，如已述般，第一接點T1，以及第二接點T2的表面例如被含有Cu（銅）或是Al（鋁）的金屬所覆蓋。Further, the switching device SW is electrically connected to the first state (FIG. 10) between the reference node TB and the first contact T1, and the second between the reference node TB and the second contact T2, as in the first embodiment. Switch between states (Figure 11). Further, as already described, the surfaces of the first contact T1 and the second contact T2 are covered, for example, by a metal containing Cu (copper) or Al (aluminum).

通過將開關裝置SW切換為第一狀態，從而電流I2流通第二LED燈L2，使第二LED燈L2點燈，同時，充電電流IC流通電容器C1，對電容器C1進行充電（圖10）。此時，電容器C1處積蓄的電荷達到第一LED元件D1的VF電壓（在圖10的例中，為VF電壓的兩倍）的水準。By switching the switching device SW to the first state, the current I2 flows through the second LED lamp L2, and the second LED lamp L2 is turned on, and the charging current IC flows through the capacitor C1 to charge the capacitor C1 (FIG. 10). At this time, the electric charge accumulated at the capacitor C1 reaches the level of the VF voltage of the first LED element D1 (in the example of FIG. 10, twice the VF voltage).

另一方面，通過將開關裝置SW切換為第二狀態，第一LED燈L1的一端與另一端變為相同電位（即，使第一LED燈L1處不流通電流），從而使第一LED燈L1滅燈，同時，使電容器C1放電，在基準節點TB與所述第二接點T2之間流通放電電流ID。On the other hand, by switching the switching device SW to the second state, one end of the first LED lamp L1 and the other end become the same potential (that is, the current does not flow at the first LED lamp L1), thereby making the first LED lamp When L1 is turned off, the capacitor C1 is discharged, and the discharge current ID flows between the reference node TB and the second contact T2.

這樣，就能夠以，與對第一LED燈L1的點燈和滅燈進行切換的頻率相同的頻率（即，與向第一接點T1處流通電流的頻率相同的頻率），向第二接點T2處流通電流。In this way, it is possible to switch to the second frequency at the same frequency as the frequency at which the first LED lamp L1 is switched on and off (that is, the same frequency as the frequency at which the current flows to the first contact T1). The current flows at point T2.

通過這樣，來抑制第二接點T2的酸化以及絕緣物的附著，從而更加切實地抑制第二接點T2的絕緣不良。即，能夠抑制開關裝置SW的切換性能的下降。Thus, the acidification of the second contact T2 and the adhesion of the insulator are suppressed, and the insulation failure of the second contact T2 is more reliably suppressed. That is, it is possible to suppress a decrease in the switching performance of the switching device SW.

再有，為了抑制第二接點T2的酸化以及絕緣物的附著，所以基於開關裝置SW處流通的放電電流的值來決定電容器C1的電容值。Further, in order to suppress acidification of the second contact T2 and adhesion of the insulator, the capacitance value of the capacitor C1 is determined based on the value of the discharge current flowing through the switching device SW.

再有，圖9所示車用LED燈點燈電路300的其他的構成，與圖1所示車用LED燈點燈電路100相同。The other configuration of the vehicle LED lamp lighting circuit 300 shown in Fig. 9 is the same as that of the vehicle LED lamp lighting circuit 100 shown in Fig. 1 .

並且，具有以上構成的車用LED燈點燈電路300的其他的運作，與第一實施方式所示的車用LED燈點燈電路100的運作相同。Further, the other operation of the vehicular LED lamp lighting circuit 300 having the above configuration is the same as the operation of the vehicular LED lamp lighting circuit 100 described in the first embodiment.

即，與第一實施方式一樣，本實施方式涉及的車用LED燈點燈電路300被適用於兩輪車等車輛的情況下，當開關裝置SW遇水導致漏電流IX流通時，也能夠更切實地將LED燈滅燈。In other words, when the vehicle LED lamp lighting circuit 300 according to the present embodiment is applied to a vehicle such as a two-wheeled vehicle, the switch device SW can also circulate the leakage current IX when it encounters water. Actually turn off the LED light.

並且，開關裝置SW遇水後，即使開關裝置SW的第一接點T1與第二接點T2之間變為流通漏電流IX的狀態，開關裝置SW也已被切換為了第二狀態。通過這樣，第一LED燈L1的一端與另一端變為相同電位，第一LED燈L1處不流通電流。When the switching device SW is in contact with water, even if the leakage current IX flows between the first contact T1 and the second contact T2 of the switching device SW, the switching device SW is switched to the second state. Thus, one end of the first LED lamp L1 and the other end have the same potential, and no current flows through the first LED lamp L1.

通過這樣，如所述般，開關裝置SW就不需要用於防止漏電流IX的外部電路或是防水功能，從而 能夠使用低價的開關裝置SW。因此，就可以削減車用LED燈點燈電路的製造成本。Thus, as described above, the switching device SW does not require an external circuit for preventing the leakage current IX or a waterproof function, so that the low-cost switching device SW can be used. Therefore, it is possible to reduce the manufacturing cost of the LED lamp lighting circuit for a vehicle.

因此，根據本實施方式涉及的車用LED燈點燈電路，在削減製造成本的同時，能夠抑制由於漏電流流通控制LED燈點燈的開關裝置處而導致的LED燈的錯誤點燈。Therefore, according to the LED lamp lighting circuit for a vehicle according to the present embodiment, it is possible to suppress the erroneous lighting of the LED lamp due to the leakage current flowing through the switching device for controlling the lighting of the LED lamp while reducing the manufacturing cost.

再有，雖然本實施方式就電容器C1適用於第一實施方式的車用LED燈點燈電路的情況進行了說明，但也可將電容器C1適用於第二實施方式的車用LED燈點燈電路。   [第四實施方式]In the present embodiment, the case where the capacitor C1 is applied to the vehicular LED lamp lighting circuit of the first embodiment has been described. However, the capacitor C1 may be applied to the vehicular LED lamp lighting circuit of the second embodiment. . [Fourth embodiment]

在已述的第一至第三實施方式中，就來自電源線的被控制在穩定水準的電源電壓被提供給車用LED燈點燈電路的構成例進行了說明。In the first to third embodiments described above, a configuration example in which the power source voltage controlled from the power source line is supplied to the vehicle LED lamp lighting circuit has been described.

本實施方式中，就包括LED燈點燈電路與電源電路的LED燈點燈裝置的一例進行說明。In the present embodiment, an example of an LED lamp lighting device including an LED lamp lighting circuit and a power supply circuit will be described.

第四實施方式涉及的車用LED燈點燈電路400與第二實施方式一樣，對兩輪車等的車輛（未圖示）上安裝的LED燈的點燈進行控制（圖12）。再有，圖12所示例為開關裝置SW中，基準節點TB未與第一、第二接點T1、T2相連接的狀態。另外，圖12中與圖5相同的符號表示與第二實施方式相同的構成。The LED lamp lighting circuit 400 for a vehicle according to the fourth embodiment controls the lighting of the LED lamp mounted on a vehicle (not shown) such as a two-wheeled vehicle as in the second embodiment (FIG. 12). Further, the example shown in FIG. 12 is a state in which the reference node TB is not connected to the first and second contacts T1 and T2 in the switching device SW. In FIG. 12, the same reference numerals as those in FIG. 5 denote the same configurations as those of the second embodiment.

該車用LED燈點燈電路400包括（圖12）：第一電阻R1，其一端與電源線VCC相連接，其另一端與第一接點T1相連接；第一LED燈L1，其一端與基準節點TB相連接，其另一端與第二接點T2以及接地線GND相連接；開關裝置SW，對流通第一LED燈L1的電流進行控制；電容器C1，其一端與基準節點TB相連接，其另一端與第二接點T2相連接；以及，電源電路DS，向電源線VCC提供穩定的電源電壓。The vehicle LED lighting circuit 400 includes (FIG. 12): a first resistor R1 having one end connected to the power line VCC and the other end connected to the first contact T1; the first LED L1, one end of which is The reference node TB is connected, the other end of which is connected to the second contact T2 and the ground line GND; the switching device SW controls the current flowing through the first LED lamp L1; and the capacitor C1 has one end connected to the reference node TB. The other end thereof is connected to the second contact T2; and the power supply circuit DS supplies a stable power supply voltage to the power supply line VCC.

即，該車用LED燈點燈電路400與圖5所示的第二實施方式的車用LED燈點燈電路200相比，進一步包括電源電路DS。該電源電路DS將電源電壓的值控制在穩定的值。That is, the vehicle LED lamp lighting circuit 400 further includes a power supply circuit DS as compared with the vehicle LED lamp lighting circuit 200 of the second embodiment shown in FIG. 5. The power supply circuit DS controls the value of the power supply voltage to a stable value.

此處，與第二實施方式一樣，第一電阻R1在所述的第一狀態中，電阻值被設定為從提供電源電壓的電源線VCC向第一LED燈L1提供的驅動電流成為被預先設定的第一規定值。Here, as in the second embodiment, in the first state, the first resistor R1 is set such that the drive current supplied from the power supply line VCC supplying the power supply voltage to the first LED lamp L1 is set in advance. The first specified value.

通過這樣，在電源電路DS將電源電壓的值控制在所定的穩定的值的情況下，通過將開關裝置SW切換為第一狀態，第一LED燈L1被提供所述第一規定值的驅動電流，從而第一LED燈L1會以規定的亮度點燈。In this way, when the power supply circuit DS controls the value of the power supply voltage to a predetermined stable value, the first LED lamp L1 is supplied with the driving current of the first predetermined value by switching the switching device SW to the first state. Therefore, the first LED lamp L1 is lit with a prescribed brightness.

進一步的，與第二實施方式一樣，第二電阻R2的電阻值被設定為從提供電源電壓的電源線VCC向第二LED燈L2提供的驅動電流成為被預先設定的第二規定值。Further, as in the second embodiment, the resistance value of the second resistor R2 is set such that the drive current supplied from the power supply line VCC that supplies the power supply voltage to the second LED lamp L2 becomes a second predetermined value that is set in advance.

通過這樣，在電源電路DS將電源電壓的值被控制在所定的穩定的值的情況下，無論第一LED燈L1的是否點燈以及是否存在漏電流IX，第二LED燈L2都會被提供所述第二規定值的驅動電流，從而第二LED燈L2會以規定的亮度點燈。By doing so, in the case where the power supply circuit DS controls the value of the power supply voltage to a predetermined stable value, the second LED lamp L2 is supplied regardless of whether or not the first LED lamp L1 is turned on and whether or not the leakage current IX is present. The drive current of the second predetermined value is described so that the second LED lamp L2 is lit with a predetermined brightness.

再有，圖12所示車用LED燈點燈電路400的其他的構成，與圖5所示車用LED燈點燈電路200相同。The other configuration of the vehicle LED lamp lighting circuit 400 shown in Fig. 12 is the same as that of the vehicle LED lamp lighting circuit 200 shown in Fig. 5 .

並且，具有以上構成的車用LED燈點燈電路400的其他的運作，與第二實施方式所示的車用LED燈點燈電路300的運作相同。Further, the other operation of the vehicular LED lamp lighting circuit 400 having the above configuration is the same as the operation of the vehicular LED lamp lighting circuit 300 shown in the second embodiment.

即，與第二實施方式一樣，本實施方式涉及的車用LED燈點燈電路400被適用於兩輪車等車輛的情況下，當開關裝置SW遇水導致漏電流IX流通時，也能夠更切實地將LED燈滅燈。In other words, when the vehicle LED lamp lighting circuit 400 according to the present embodiment is applied to a vehicle such as a two-wheeled vehicle, the switch device SW can also circulate the leakage current IX when it encounters water. Actually turn off the LED light.

並且，開關裝置SW遇水後，即使開關裝置SW的第一接點T1與第二接點T2之間變為流通漏電流IX的狀態，開關裝置SW也已被切換為了第二狀態。通過這樣，第一LED燈L1的一端與另一端變為相同電位，第一LED燈L1處不流通電流。When the switching device SW is in contact with water, even if the leakage current IX flows between the first contact T1 and the second contact T2 of the switching device SW, the switching device SW is switched to the second state. Thus, one end of the first LED lamp L1 and the other end have the same potential, and no current flows through the first LED lamp L1.

通過這樣，如所述般，開關裝置SW就不需要用於防止漏電流IX的外部電路或是防水功能，從而 能夠使用低價的開關裝置SW。因此，就可以削減車用LED燈點燈電路的製造成本。Thus, as described above, the switching device SW does not require an external circuit for preventing the leakage current IX or a waterproof function, so that the low-cost switching device SW can be used. Therefore, it is possible to reduce the manufacturing cost of the LED lamp lighting circuit for a vehicle.

因此，根據本實施方式涉及的車用LED燈點燈電路，在削減製造成本的同時，能夠抑制由於漏電流流通控制LED燈點燈的開關裝置處而導致的LED燈的錯誤點燈。Therefore, according to the LED lamp lighting circuit for a vehicle according to the present embodiment, it is possible to suppress the erroneous lighting of the LED lamp due to the leakage current flowing through the switching device for controlling the lighting of the LED lamp while reducing the manufacturing cost.

再有，雖然本實施方式就電源電路DS與第二實施方式的車用LED燈點燈電路相結合後的情況進行了說明，但也可將電源電路DS與第一、第三實施方式的車用LED燈點燈電路相結合。Further, in the present embodiment, the case where the power supply circuit DS is combined with the vehicle LED lamp lighting circuit of the second embodiment has been described, but the power supply circuit DS and the vehicles of the first and third embodiments may be used. Combined with LED light lighting circuit.

以上，就本發明的幾個實施方式進行了說明，但這些實施方式是作為舉例而提示的，並沒有限定發明範圍的意圖。這些實施方式可以被其他的各種形態所實施，並且可以在不脫離發明要旨的範圍內進行種種的省略、替換、以及更改。這些實施方式或是其變形例是包含於發明範圍或要旨中的，同時，也是包含於與申請專利範圍所記載的發明相均等的範圍中的。The embodiments of the present invention have been described above, but these embodiments are presented by way of example and are not intended to limit the scope of the invention. The embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. The embodiments and the modifications thereof are included in the scope of the invention, and are also included in the scope equivalent to the invention described in the claims.

100‧‧‧車用LED燈點燈電路
200‧‧‧車用LED燈點燈電路
300‧‧‧車用LED燈點燈電路
400‧‧‧車用LED燈點燈電路
C1‧‧‧電容器
D1‧‧‧第一LED元件
D2‧‧‧第二LED元件
DS‧‧‧電源電路
GND‧‧‧接地線
I1‧‧‧電流
I2‧‧‧電流
IC‧‧‧充電電流
IX‧‧‧漏電流
L1‧‧‧第一LED燈
L2‧‧‧第二LED燈
R1‧‧‧第一電阻
R2‧‧‧第二電阻
RX‧‧‧水的阻抗
SW‧‧‧開關裝置
SWa‧‧‧開關裝置
T1‧‧‧第一接點
T2‧‧‧第二接點
TB‧‧‧基準節點
VCC‧‧‧電源線100‧‧‧Car LED lighting circuit
200‧‧‧Car LED lighting circuit
300‧‧‧Car LED lighting circuit
400‧‧‧Car LED lighting circuit
C1‧‧‧ capacitor
D1‧‧‧First LED component
D2‧‧‧Second LED component
DS‧‧‧Power Circuit
GND‧‧‧ Grounding wire
I1‧‧‧ Current
I2‧‧‧ current
IC‧‧‧Charging current
IX‧‧‧Leakage current
L1‧‧‧First LED light
L2‧‧‧second LED light
R1‧‧‧first resistance
R2‧‧‧second resistance
RX‧‧‧ water impedance
SW‧‧‧ Switchgear
SWa‧‧‧ Switchgear
T1‧‧‧ first joint
T2‧‧‧second joint
TB‧‧‧ benchmark node
VCC‧‧‧ power cord

圖1是展示本發明的一種形態即第一實施方式所涉及的車用LED燈點燈電路100的構成的一例示意圖。 圖2是展示圖1所示的車用LED燈點燈電路100的開關裝置SW切換為第一狀態，第一LED燈L1點燈時的一例示意圖。 圖3是展示圖1所示的車用LED燈點燈電路100的開關裝置SW切換為第二狀態，第一LED燈L1滅燈時的一例示意圖。 圖4是展示圖1所示的車用LED燈點燈電路100的開關裝置SW切換為第二狀態，第一LED燈L1滅燈的情況下，開關裝置SW遇水並流通漏電流的狀態的一例示意圖。 圖5是展示本發明的一種形態即第二實施方式所涉及的車用LED燈點燈電路200的構成的一例示意圖。 圖6是展示圖5所示的車用LED燈點燈電路200的開關裝置SW切換為第一狀態，第一LED燈L1點燈時的一例示意圖。 圖7是展示圖5所示的車用LED燈點燈電路200的開關裝置SW切換為第二狀態，第一LED燈L1滅燈時的一例示意圖。 圖8是展示圖5所示的車用LED燈點燈電路200的開關裝置SW切換為第二狀態，第一LED燈L1滅燈的情況下，開關裝置SW遇水並流通漏電流的狀態的一例示意圖。 圖9是展示本發明的一種形態即第三實施方式所涉及的車用LED燈點燈電路300的構成的一例示意圖。 圖10是展示圖9所示的車用LED燈點燈電路300的開關裝置SW切換為第一狀態，第一LED燈L1點燈時的一例示意圖。 圖11是展示圖9所示的車用LED燈點燈電路300的開關裝置SW切換為第二狀態，第一LED燈L1滅燈時的一例示意圖。 圖12是展示本發明的一種形態即第四實施方式所涉及的車用LED燈點燈電路400的構成的一例示意圖。 圖13是展示以往的白熾燈泡點燈電路的構成的一例示意圖。 圖14是展示以往的LED燈點燈電路的構成的一例示意圖。FIG. 1 is a schematic diagram showing an example of a configuration of a vehicle lamp lamp lighting circuit 100 according to the first embodiment of the present invention. FIG. 2 is a schematic diagram showing an example in which the switching device SW of the vehicular LED lamp lighting circuit 100 shown in FIG. 1 is switched to the first state, and the first LED lamp L1 is turned on. Fig. 3 is a view showing an example of a case where the switching device SW of the vehicular LED lamp lighting circuit 100 shown in Fig. 1 is switched to the second state and the first LED lamp L1 is turned off. 4 is a view showing a state in which the switching device SW of the vehicular LED lamp lighting circuit 100 shown in FIG. 1 is switched to the second state, and when the first LED lamp L1 is turned off, the switching device SW is in contact with water and flows a leak current. An example of a schematic. FIG. 5 is a schematic diagram showing an example of a configuration of a vehicle lamp lamp lighting circuit 200 according to a second embodiment of the present invention. Fig. 6 is a view showing an example of a case where the switching device SW of the vehicular LED lamp lighting circuit 200 shown in Fig. 5 is switched to the first state and the first LED lamp L1 is turned on. Fig. 7 is a view showing an example of a case where the switching device SW of the vehicular LED lamp lighting circuit 200 shown in Fig. 5 is switched to the second state, and the first LED lamp L1 is turned off. 8 is a view showing a state in which the switching device SW of the vehicular LED lamp lighting circuit 200 shown in FIG. 5 is switched to the second state, and when the first LED lamp L1 is turned off, the switching device SW is in contact with water and flows a leak current. An example of a schematic. FIG. 9 is a schematic diagram showing an example of a configuration of a vehicle LED lamp lighting circuit 300 according to a third embodiment of the present invention. FIG. 10 is a schematic diagram showing an example in which the switching device SW of the vehicular LED lamp lighting circuit 300 shown in FIG. 9 is switched to the first state, and the first LED lamp L1 is turned on. FIG. 11 is a view showing an example of a case where the switching device SW of the vehicular LED lamp lighting circuit 300 shown in FIG. 9 is switched to the second state, and the first LED lamp L1 is turned off. FIG. 12 is a schematic diagram showing an example of a configuration of a vehicle LED lamp lighting circuit 400 according to a fourth embodiment of the present invention. FIG. 13 is a schematic view showing an example of a configuration of a conventional incandescent light bulb lighting circuit. FIG. 14 is a schematic view showing an example of a configuration of a conventional LED lamp lighting circuit.

100‧‧‧車用LED燈點燈電路 100‧‧‧Car LED lighting circuit

D1‧‧‧第一LED元件 D1‧‧‧First LED component

GND‧‧‧接地線 GND‧‧‧ Grounding wire

L1‧‧‧第一LED燈 L1‧‧‧First LED light

R1‧‧‧第一電阻 R1‧‧‧first resistance

SW‧‧‧開關裝置 SW‧‧‧ Switchgear

T1‧‧‧第一接點 T1‧‧‧ first joint

T2‧‧‧第二接點 T2‧‧‧second joint

TB‧‧‧基準節點 TB‧‧‧ benchmark node

VCC‧‧‧電源線 VCC‧‧‧ power cord

Claims (15)

一種車用LED燈點燈電路，對車輛上安裝的LED燈的點燈進行控制，其特徵在於，包括：第一LED燈，由至少一個以上的第一LED元件所構成，其一端與基準節點相連接，其另一端與接地線相連接；以及開關裝置，在將所述基準節點和與電源線相連接的第一接點之間導通使得電流在所述電源線和所述第一LED燈的所述一端之間流通的第一狀態，和與將所述基準節點和與所述第一LED燈的所述另一端相連接的第二接點之間導通使得所述第一LED燈的所述一端和所述第一LED燈的所述另一端處於相同電位，並且將所述電源線和所述第一LED燈的所述一端之間阻斷的第二狀態之間進行切換。 A vehicle LED lighting circuit for controlling lighting of an LED lamp mounted on a vehicle, comprising: a first LED lamp, comprising at least one or more first LED elements, one end and a reference node Connected, the other end of which is connected to the ground line; and a switching device that conducts between the reference node and the first contact connected to the power line such that current is at the power line and the first LED lamp a first state in which the one end is circulated, and a conduction between the reference node and the second contact connected to the other end of the first LED lamp such that the first LED lamp The one end is at the same potential as the other end of the first LED lamp and switches between a second state in which the power line and the one end of the first LED lamp are blocked. 根據請求項1所述的車用LED燈點燈電路，其中，通過將所述開關裝置切換為所述第一狀態，電流從所述電源線向所述第一LED燈流通使所述第一LED燈點燈，通過將所述開關裝置切換為所述第二狀態，將所述電源線和所述第一LED燈的所述一端之間阻斷，從而使所述第一LED燈滅燈，同時，使所述第一LED燈的所述一端和所述第一LED燈的所述另一端處於相同電位。 The vehicular LED lamp lighting circuit of claim 1, wherein the current is circulated from the power source line to the first LED lamp by switching the switching device to the first state LED light is turned on, and the first LED light is turned off by switching the power supply line and the one end of the first LED lamp by switching the switching device to the second state. At the same time, the one end of the first LED lamp and the other end of the first LED lamp are at the same potential. 根據請求項1或2所述的車用LED燈點燈電路，其中，在所述第二狀態下，所述第一LED燈處不流通電流。 The vehicular LED lamp lighting circuit according to claim 1 or 2, wherein, in the second state, no current flows at the first LED lamp. 根據請求項1或2所述的車用LED燈點燈電路，其特徵在於：其中，所述基準節點僅與所述第一LED燈的所述一端相連接，以及/或是，所述第二接點僅與所述第一LED燈的所述另一端以及所述接地線相連接。 The LED lamp lighting circuit for a vehicle according to claim 1 or 2, wherein the reference node is connected only to the one end of the first LED lamp, and/or the The two contacts are only connected to the other end of the first LED lamp and the ground line. 根據請求項1或2所述的車用LED燈點燈電路，其中，所述開關裝置一旦遇水，漏電流會在所述第一接點與所述第二接點之間流通。 The vehicular LED lamp lighting circuit according to claim 1 or 2, wherein, when the switching device encounters water, a leakage current flows between the first contact and the second contact. 根據請求項5所述的車用LED燈點燈電路，其中，即使所述漏電流向所述開關裝置流通，通過將所述開關裝置切換為所述第二狀態，則所述第一LED燈的所述一端和所述第一LED燈的所述另一端就會處於相同電位，從而所述第一LED燈處不流通電流。 The vehicular LED lamp lighting circuit according to claim 5, wherein the first LED lamp is switched by switching the switching device to the second state even if the leakage current flows to the switching device The one end and the other end of the first LED lamp are at the same potential, so that no current flows at the first LED lamp. 根據請求項6所述的車用LED燈點燈電路，其中，在所述第一接點與所述第二接點之間流通的所述漏電流的值大於能夠將所述第一LED燈點燈的驅動電流的值。 The vehicular LED lamp lighting circuit of claim 6, wherein a value of the leakage current flowing between the first contact and the second contact is greater than a capability of the first LED lamp The value of the drive current for lighting. 根據請求項6所述的車用LED燈點燈電路，其中，所述第二狀態下，所述第一LED燈的所述一端以及所述第一LED燈的所述另一端接地，所述第一LED燈滅燈。 The vehicle LED lamp lighting circuit of claim 6, wherein in the second state, the one end of the first LED lamp and the other end of the first LED lamp are grounded, The first LED light is off. 根據請求項5所述的車用LED燈點燈電路，其中，所述開關裝置一旦遇水，則所述第一接點以及所述第二接點遇水，在所述第一接點與所述第二接點之間由於水的阻抗而連接並且流通漏電流。 The vehicular LED lamp lighting circuit of claim 5, wherein the first contact and the second contact are in contact with water when the switching device encounters water, at the first contact The second contacts are connected due to the impedance of the water and flow a leakage current. 根據請求項1所述的車用LED燈點燈電路，其中，在所述電源線和所述第一接點之間連接有第一電阻。 The vehicular LED lamp lighting circuit according to claim 1, wherein a first resistor is connected between the power source line and the first contact. 根據請求項10所述的車用LED燈點燈電路，其中，所述第一電阻的一端與所述電源線相連接，所述第一電阻的另一端僅與所述第一接點相連接。 The vehicular LED lamp lighting circuit of claim 10, wherein one end of the first resistor is connected to the power line, and the other end of the first resistor is only connected to the first contact . 根據請求項1所述的車用LED燈點燈電路，其中，所述第一LED燈的所述一端連接有所述第一LED元件的陽極側，所述第一LED燈的所述另一端連接有所述第一LED元件的陰極側。 The vehicular LED lamp lighting circuit according to claim 1, wherein the one end of the first LED lamp is connected to an anode side of the first LED element, and the other end of the first LED lamp is A cathode side of the first LED element is connected. 根據請求項2所述的車用LED燈點燈電路，其中，進一步包括一端與所述基準節點相連接，另一端與所述第二接點相連接的電容器，通過將所述開關裝置切換為所述第一狀態，使電流從所述電源線向所述第一LED燈流通，從而一邊使所述第一LED燈點燈，一邊對所述電容器進行充電，通過將所述開關裝置切換為所述第二狀態，將所述電源線和所述第一LED燈的所述一端之間阻斷，從而使所述第一LED燈滅燈，同時，一邊使所述第一LED燈的所述一端和所述第一LED燈的所述另一端處於相同電位，一邊使所述電容器放電，從而使電流在所述基準節點和所述第二接點之間流通。 The vehicular LED lamp lighting circuit according to claim 2, further comprising a capacitor having one end connected to the reference node and the other end connected to the second contact, by switching the switching device to In the first state, a current is caused to flow from the power line to the first LED lamp, thereby charging the capacitor while lighting the first LED lamp, and switching the switching device to The second state blocks between the power line and the one end of the first LED lamp, thereby turning off the first LED lamp, and simultaneously making the first LED lamp The one end and the other end of the first LED lamp are at the same potential, and the capacitor is discharged while circulating a current between the reference node and the second contact. 一種車用LED燈點燈裝置，對車輛上安裝的LED燈的點燈進行控制，其特徵在於，包括：第一LED燈，由至少一個以上的第一LED元件所構成，其一端與基準節點相連接，其另一端與接地線相連接；開關裝置，在將所述基準節點和與電源線相連接的第一接點之間導通並且電流在所述電源線和所述第一LED燈的所述一端之間流通的第一狀態，和與將所述基準節點和與所述第一LED燈的所述另一端相連接的第二接點之間導通，使所述第一LED燈的所述一端和所述第一LED燈的所述另一端處於相同電位，並且將所述電源線和所述第一LED燈的所述一端之間阻斷的第二狀態之間進行切換；以及電源電路，向所述電源線供給穩定的電源電壓。 A LED lamp lighting device for a vehicle controls a lighting of an LED lamp mounted on a vehicle, comprising: a first LED lamp, which is composed of at least one or more first LED elements, one end thereof and a reference node Connected, the other end of which is connected to the ground line; a switching device that conducts between the reference node and the first contact connected to the power line and current is present in the power line and the first LED lamp a first state circulating between the one ends, and a second connection between the reference node and the second contact connected to the other end of the first LED lamp to enable the first LED lamp The one end is at the same potential as the other end of the first LED lamp, and switches between a second state in which the power line and the one end of the first LED lamp are blocked; A power supply circuit supplies a stable power supply voltage to the power supply line. 一種車用LED燈點燈電路的控制方法，對車輛上安裝的LED燈的點燈進行控制，其特徵在於，包括：第一LED燈，由至少一個以上的第一LED元件所構成，其一端與基準節點相連接，其另一端與接地線相連接；以及開關裝置，在將所述基準節點和與電源線相連接的第一接點之間導通使得電流在所述電源線和所述第一LED燈的所述一端之間流通的第一狀態，和與將所述基準節點和與所述第一LED燈的所述另一端相連接的第二接點之間導通使得所述第一LED燈的所述一端和所述第一LED燈的所述另一端處於相同電位，並且將所述電源線和所述第一LED燈的所述一端之間阻斷的第二狀態之間進行切換，其中，通過將所述開關裝置切換為所述第一狀態，電流從所述電源線向所述第一LED燈流通使所述第一LED燈點燈，通過將所述開關裝置切換為所述第二狀態，將所述電源線和所述第一LED燈的所述一端之間阻斷，從而使所述第一LED燈滅燈，同時，使所述第一LED燈的所述一端和所述第一LED燈的所述另一端處於相同電位。 A control method for a LED lamp lighting circuit for a vehicle, wherein the lighting of the LED lamp mounted on the vehicle is controlled, comprising: a first LED lamp, which is composed of at least one or more first LED elements, one end thereof Connected to the reference node, the other end of which is connected to the ground line; and a switching device that conducts between the reference node and the first contact connected to the power line such that current is in the power line and the first a first state between the one end of an LED lamp and a second state connected to the reference node and the other end of the first LED lamp such that the first The one end of the LED lamp and the other end of the first LED lamp are at the same potential, and a second state between the power line and the one end of the first LED lamp is blocked Switching, wherein, by switching the switching device to the first state, current flows from the power line to the first LED lamp to illuminate the first LED lamp, by switching the switching device to The second state, the power cord and the Blocking between the one ends of an LED lamp to turn off the first LED lamp while simultaneously making the one end of the first LED lamp and the other end of the first LED lamp Potential.
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