CN106465509B

CN106465509B - The control method of LED lamp for vehicles lamp circuit, ignition device and lamp circuit

Info

Publication number: CN106465509B
Application number: CN201580002512.4A
Authority: CN
Inventors: 高嶋豊隆
Original assignee: Shindengen Electric Manufacturing Co Ltd
Current assignee: Shindengen Electric Manufacturing Co Ltd
Priority date: 2015-03-27
Filing date: 2015-03-27
Publication date: 2018-11-30
Anticipated expiration: 2035-03-27
Also published as: TW201641874A; CN106465509A; TWI585336B; WO2016157319A1; JPWO2016157319A1; JP6062603B1

Abstract

The present invention relates to a kind of LED lamp for vehicles lamp circuits, control the lighting for the LED light installed on vehicle, which is characterized in that including：First resistor, one end are connected with the power supply line for providing supply voltage, and the other end is connected with the first contact；First LED light is made of the first LED element of at least more than one, and one end is connected with datum node, and the other end is connected with the ground line of the second contact and grounding connection；And switching device, it switches between the second state be connected between the first state be connected between datum node and the first contact and datum node and the second contact.

Description

The control method of LED lamp for vehicles lamp circuit, ignition device and lamp circuit

Technical field

The present invention relates to a kind of LED lamp for vehicles lamp circuit, LED lamp for vehicles ignition device and LED lamp for vehicles lighting electricity The control method on road.

Background technique

In general, LED (LightEmittingDiode light emitting diode) lamp (Lamp) can rely on low-voltage lighting, and it is white Vehement lamp (Filament) (light bulb (Bulb lamp)) etc., which is compared, has the service life long, and consumption electric power is low, and reaction speed is fast, Yi Jinai The characteristics of impact, it is possible to realize small-sized, lightweights.Therefore, LED light can be perfectly suitable for the head lamp (Head of such as vehicle The occasions such as lamp).

As one kind of such a LED light ignition device, such as have as special open 2014-69694 and patent the No. 5577457 LED light lighting control devices shown.In previous this LED point lamp control device, have to LED light Lighting/turn off the light switch (Switch) the device SWa (Figure 14) controlled.

Here, such as in the lamp circuit of previous light bulb, when the lighting to lamp/switching device controlled of turning off the light SWa once meets water in cut-off (Off) state, and leakage current (Leakage current) will flow to switching device SWa.Herein In the case of, since leakage current is small, light bulb not can be lit (Figure 13).

But in above-mentioned previous LED lamp for vehicles lamp circuit, the switching device for the lighting of LED light/turn off the light is controlled SWa once meets water, and leakage current can also flow to switching device SWa, and in this case, even if leakage current is small, LED element can also be sent out Light, so as to cause the wrong lighting (Figure 14) of LED light.

So having the switch for the external circuit for preventing leakage current by application in previous LED lamp for vehicles lamp circuit Device, and the switching device with water-proof function, to inhibit the wrong lighting of LED light.

However, there is the manufacturing cost for increasing LED lamp for vehicles lamp circuit since such switching device price is high (cost) the problem of.

Therefore, the purpose of the present invention is to provide one kind can not only cut down cost, while can flow to and control to due to leakage current The switch of LED light lighting processed so as to cause the LED lamp for vehicles lamp circuit that is inhibited of LED light mistake lighting.

Summary of the invention

A kind of LED lamp for vehicles lamp circuit for the embodiment that a kind of form according to the invention is related to, to being installed on vehicle The lighting of LED light controlled, which is characterized in that including：

First LED light is made of the first LED element of at least more than one, and one end is connected with datum node, The other end is connected with ground line；

Switching device, will between the datum node (Node) and the first contact being connected with power supply line conducting and The first state that electric current circulates between the power supply line and described one end of first LED light, and with by the benchmark section It is connected between point and the second contact being connected with the other end of first LED light, makes the described of first LED light The other end of one end and first LED light is in same potential, and by the power supply line and first LED light It is switched between the second state blocked between described one end；And

First resistor, one end are connected with the power supply line for providing supply voltage, and the other end connects with described first Point is connected.

The LED lamp for vehicles lamp circuit, it is characterised in that：

Wherein, by the way that the switching device is switched to the first state, electric current is from the power supply line to described first LED light circulation makes the first LED light lighting,

By the way that the switching device is switched to second state, by the institute of the power supply line and first LED light It states and is blocked between one end, so that first LED light is made to turn off the light, meanwhile, make described one end and described of first LED light The other end of one LED light is in same potential.

The LED lamp for vehicles lamp circuit, it is characterised in that：

Wherein, in said second condition, not circulating current at first LED light.

The LED lamp for vehicles lamp circuit, it is characterised in that：

Wherein, the datum node is only connected with described one end of first LED light, and/or is, and described second Contact is only connected with the other end of first LED light and the ground line.

The LED lamp for vehicles lamp circuit, it is characterised in that：

Wherein, the switching device once meets water, and leakage current can flow between first contact and second contact It is logical.

The LED lamp for vehicles lamp circuit, it is characterised in that：

Wherein, even if electric leakage flows to the switching device circulation, by the way that the switching device is switched to second shape State, then the other end of described one end of first LED light and first LED light would be at same potential, thus Not circulating current at first LED light.

The LED lamp for vehicles lamp circuit, it is characterised in that：

Wherein, the value of the leakage current to circulate between first contact and second contact is greater than can be by institute State the value of the driving current of the first LED light lighting.

The LED lamp for vehicles lamp circuit, it is characterised in that：

Wherein, under second state, described one end of first LED light and first LED light it is described another One end ground connection, first LED light are turned off the light.

The LED lamp for vehicles lamp circuit, it is characterised in that：

Wherein, the switching device once meets water, then first contact and second contact meet water, described the It is connected between one contact and second contact due to the impedance of water and the leakage current that circulates.

The LED lamp for vehicles lamp circuit, it is characterised in that：

Wherein, described one end of first LED light is connected with the anode-side of first LED element, the first LED The other end of lamp is connected with the cathode side of first LED element.

The LED lamp for vehicles lamp circuit, it is characterised in that：

It wherein, further comprise that one end is connected with the datum node, the other end is connected with second contact Capacitor,

By the way that the switching device is switched to the first state, make electric current from the power supply line to the first LED Lamp circulation, to make the first LED light lighting on one side, on one side charges to the capacitor,

By the way that the switching device is switched to second state, by the institute of the power supply line and first LED light It states and is blocked between one end, so that first LED light is made to turn off the light, meanwhile, make described one end and the institute of first LED light on one side The other end for stating the first LED light is in same potential, makes the capacitor discharge on one side, to make electric current in the benchmark It circulates between node and second contact.

A kind of LED lamp for vehicles ignition device for the embodiment that a kind of form according to the invention is related to, to being installed on vehicle The lighting of LED light controlled, which is characterized in that including：

Switching device, will between the datum node and the first contact being connected with power supply line conducting and electric current exist The first state to circulate between the power supply line and described one end of first LED light, and with by the datum node and with Be connected between the second contact that the other end of first LED light is connected, make first LED light described one end and The other end of first LED light is in same potential, and by described the one of the power supply line and first LED light It is switched between the second state blocked between end；

Power circuit supplies stable supply voltage to the power supply line；And

First resistor, one end are connected with the power supply line for providing the supply voltage, the other end and described the One tie point is connected.

A kind of control method of the LED lamp for vehicles lamp circuit for the embodiment that a kind of form according to the invention is related to is right The lighting for the LED light installed on vehicle is controlled, which is characterized in that including：

Switching device, will between the datum node and the first contact being connected with power supply line conducting and electric current exist The first state to circulate between the power supply line and described one end of first LED light, and with by the datum node and with Be connected between the second contact that the other end of first LED light is connected, make first LED light described one end and The other end of first LED light is in same potential, and by described the one of the power supply line and first LED light It is switched between the second state blocked between end；And

First resistor, one end are connected with the power supply line of offer supply voltage, the other end and described first Contact is connected,

Invention effect

A kind of LED lamp for vehicles lamp circuit for the embodiment that a kind of form according to the invention is related to, to being installed on vehicle The lighting of LED light controlled comprising：First resistor, one end are connected with the power supply line for being provided supply voltage, The other end is connected with the first contact；First LED light is made of, one end and base the first LED element of at least more than one Quasi- node TB is connected, and the other end is connected with the second contact T2 and the ground line being grounded；And switching device, Second be connected between the first state be connected between datum node TB and the first contact and datum node TB and the second contact T2 It is switched between state.

In the LED lamp for vehicles lamp circuit, by the way that switching device is switched to first state, then from the driving of power supply line Electric current is supplied to the first LED light, thus the first LED light lighting.On the other hand, by the way that switching device is switched to the second state, Then between one end and the other end of the first LED light short circuit and become same potential, so that the first LED light is turned off the light.

In this way, for example, in the case that LED lamp for vehicles lamp circuit is applied to two wheeler, when switching device meets water When leakage current being caused to circulate, also more effectively LED light can be turned off the light.

Moreover, when switching device meets water, even if circulating leakage current between the first contact of switching device and the second contact T2 In the state of, by the way that switching device is switched to the second state, then identical electricity is between one end of the first LED light and the other end Position, thus not circulating current at the first LED light.

In this way, switching device is able to use there is no need to have the external circuit or water-proof function that prevent leakage current The switching device of low price.Therefore, it will be able to cut down the manufacturing cost of LED lamp for vehicles lamp circuit.

Therefore, the LED lamp for vehicles lamp circuit being related to according to the present invention is able to suppress while cutting down manufacturing cost Due to leakage current flow quantity control LED light lighting switching device at caused by LED light wrong lighting.

Detailed description of the invention

Fig. 1 is to show LED lamp for vehicles lamp circuit 100 involved in a kind of form i.e. first embodiment of the invention An example schematic diagram of composition.

Fig. 2 is to show that the switching device SW of LED lamp for vehicles lamp circuit 100 shown in FIG. 1 is switched to first state, first An example schematic diagram when LED light L1 lighting.

Fig. 3 is to show that the switching device SW of LED lamp for vehicles lamp circuit 100 shown in FIG. 1 is switched to the second state, first An example schematic diagram when LED light L1 turns off the light.

Fig. 4 is to show that the switching device SW of LED lamp for vehicles lamp circuit 100 shown in FIG. 1 is switched to the second state, first In the case that LED light L1 turns off the light, switching device SW meets an example schematic diagram of water and the state for the leakage current that circulates.

Fig. 5 is to show LED lamp for vehicles lamp circuit 200 involved in a kind of form i.e. second embodiment of the invention An example schematic diagram of composition.

Fig. 6 is to show that the switching device SW of LED lamp for vehicles lamp circuit 200 shown in fig. 5 is switched to first state, first An example schematic diagram when LED light L1 lighting.

Fig. 7 is to show that the switching device SW of LED lamp for vehicles lamp circuit 200 shown in fig. 5 is switched to the second state, first An example schematic diagram when LED light L1 turns off the light.

Fig. 8 is to show that the switching device SW of LED lamp for vehicles lamp circuit 200 shown in fig. 5 is switched to the second state, first In the case that LED light L1 turns off the light, switching device SW meets an example schematic diagram of water and the state for the leakage current that circulates.

Fig. 9 is to show LED lamp for vehicles lamp circuit 300 involved in a kind of form i.e. third embodiment of the invention An example schematic diagram of composition.

Figure 10 is to show that the switching device SW of LED lamp for vehicles lamp circuit 300 shown in Fig. 9 is switched to first state, the An example schematic diagram when one LED light L1 lighting.

Figure 11 is to show that the switching device SW of LED lamp for vehicles lamp circuit 300 shown in Fig. 9 is switched to the second state, the An example schematic diagram when one LED light L1 turns off the light.

Figure 12 is to show LED lamp for vehicles lamp circuit 400 involved in a kind of form i.e. the 4th embodiment of the invention Composition an example schematic diagram.

Figure 13 is an example schematic diagram for showing the composition of previous incandescent lamp bulb lamp circuit.

Figure 14 is an example schematic diagram for showing the composition of previous LED light lamp circuit.

Specific embodiment

With reference to the accompanying drawings, each embodiment according to the present invention is illustrated.

First embodiment

The LED lamp for vehicles lamp circuit 100 that first embodiment is related on the vehicle (not shown) of two wheeler etc. to installing The lighting of LED light controlled (Fig. 1).Further more, Fig. 1 is exemplified in switching device SW, datum node TB not with first, the The state that two node T1, T2 are connected.

The LED lamp for vehicles lamp circuit 100 includes：First resistor R1, one end are connected with power supply line VCC, another End is connected with the first contact T1；First LED light L1, one end are connected with datum node TB, the other end and the second contact T2 and ground line GND are connected；And (after meeting water, then the first contact T1 and the second contact T2 is met chance taps device Water, to be formed and conduct between the first contact T1 and the second contact T2 (due to water impedance and connect) and the leakage current that circulates Switching device) SW, the electric current of the first LED light L1 of circulation is controlled.

The LED lamp for vehicles lamp circuit 100 is on the vehicle such as being mounted on already described two wheeler.

Power supply line VCC is provided supply voltage.Further more, the value of the supply voltage is controlled as stable value.

It is grounded GND grounding connection.Further more, the current potential of the ground connection is not defined as 0V, and it is set at and at least can The current potential of enough fixations lower than supply voltage by LED light lighting.

In addition, the first LED light L1 is at least made of more than one first LED element D1.Also, the first LED light L1 One end be connected with the anode-side of the first LED element D1, the cathode of the other end of the first LED light L1 and the first LED element D1 Side is connected.Further more, the configuration example in Fig. 1 is that the first LED light L1 is connected in series by two the first LED element D1.

First LED light L1 is, for example, head lamp, turn signal lamp, taillight, the clearance lamps, speed instruction of already described two wheeler Any one of lamp.

In addition, the first state (Fig. 2) that switching device SW is connected between datum node TB and the first contact T1, with benchmark It is switched between the second state (Fig. 3) be connected between node TB and the second contact T2.Further more, the first contact T1, Yi Ji The surface of two point T2 is for example covered by the metal containing Cu (copper) or Al (aluminium).

For example, by the way that switching device SW is switched to first state, the first LED light L1 so that electric current I1 circulates makes first LED light L1 lighting (Fig. 3).

Switching device SW for example by the operation of user, is cut between already described first state and the second state It changes.

Switching device SW is, for example, the mechanical of the already described two wheeler controlled for the lighting to the first LED light L1 Bat-handle switch (Handle switch).Further more, switching device SW has relatively easy construction, such as equipped with for preventing The external circuit or water-proof function of leakage current IX.

Therefore, after switching device SW meets water, the first contact T1 and the second contact T2 is caused to meet water, thus the first contact T1 Formed and conduct between the second contact T2 (due to water impedance RX and connect) and circulate leakage current IX (Fig. 4).Like this, it leaks Electric current IX may circulate at switching device SW.

For example, the value of the leakage current IX to circulate between the first contact T1 and the second contact T2 of switching device SW, sometimes The value that can make the driving current of the first LED light L1 lighting can be greater than.

At this point, then the first LED light L1 may be by wrong lighting if upon leakage current IX circulates at the first LED light L1. However, even if becoming at switching device SW in the state of circulation leakage current IX, by the way that switching device SW is switched to the second state, Then one end of the first LED light L1 and the other end become same potential, thus not circulating current at the first LED light L1.

That is, be able to suppress due to leakage current IX circulation switching device SW at caused by the first LED light L1 wrong lighting.

In addition, one end of first resistor R1 is connected with power supply line VCC, the other end and the first contact T1 phase as described Connection.

For first resistor R1 under already described first state, resistance value is set to the power supply line from offer supply voltage The driving current that VCC is provided to the first LED light L1 becomes the first specified value being preset.

In this way, in the case where the value of supply voltage is controlled in fixed stable value, by by switching device SW is switched to first state, and the first LED light L1 is provided the driving current of first specified value, thus the first LED light L1 with Defined brightness lighting.

Next, just an example of the control method of the LED lamp for vehicles lamp circuit 100 with above-mentioned composition is illustrated.

Such as switching device SW as described by the operation of user, is switched between datum node TB and the first contact T1 The first state (Fig. 2) of conducting.In this way, at the first LED light of current flowing L1, to make the first LED light L1 lighting (figure 2)。

On the other hand, switching device SW by the operation of user, is switched between datum node TB and the second contact T2 and leads Logical the second state (Fig. 3).In this way, one end of the first LED light L1 and the other end become same potential (that is, the first LED light Not circulating current at L1), so that the first LED light L1 be made to turn off the light (Fig. 3).

Herein, since the switching device SW for belonging to mechanical bat-handle switch meets water, then the first contact T1 and second connects Point T2 meets water, to be formed and conduct between the first contact T1 and the second contact T2 (due to water impedance RX and connect) and circulate Leakage current IX (Fig. 4).

In this case, then one end of the first LED light L1 and the other end become by the way that switching device SW is switched to the second state For same potential, thus not circulating current at the first LED light L1.

As above, the LED lamp for vehicles lamp circuit 100 that a kind of form according to the invention is related to, to being installed on vehicle The lighting of LED light controlled comprising：First resistor R1, one end are connected with the power supply line for being provided supply voltage, Its other end is connected with the first contact T1；First LED light L1 is made of the first LED element D1 of at least more than one, One end is connected with datum node TB, and the other end is connected with the second contact T2 and the ground line GND being grounded；And Switching device SW, the first state and datum node TB that are connected between datum node TB and the first contact T1 and the second contact It is switched between the second state be connected between T2.

In the LED lamp for vehicles lamp circuit, by the way that switching device SW is switched to first state, driving current is by from power supply Line is supplied at the first LED light L1, thus the first LED light L1 lighting.

On the other hand, by the way that switching device SW is switched to the second state, then one end of the first LED light L1 and the other end it Between short circuit and become same potential, so that the first LED light L1 turns off the light.

In this way, for example, working as switch in the case that LED lamp for vehicles lamp circuit 100 is applied to the vehicles such as two wheeler When device SW chance water causes leakage current IX to circulate, also more effectively LED light can be turned off the light.

Also, after switching device SW meets water, even if becoming between the first contact T1 and the second contact T2 of switching device SW The state of circulation leakage current IX, switching device SW have also been switched for the second state.In this way, the one of the first LED light L1 End becomes same potential with the other end, not circulating current at the first LED light L1.

In this way, as described, there is no need to for preventing the external circuit of leakage current IX or preventing by switching device SW Water function, so as to use the switching device SW of low price.Accordingly, it is possible to cut down the manufacture of LED lamp for vehicles lamp circuit at This.

Therefore, the LED lamp for vehicles lamp circuit being related to according to the present embodiment can while cutting down manufacturing cost The wrong lighting of LED light caused by inhibiting at the switching device due to leakage current flow quantity control LED light lighting.

Second embodiment

In second embodiment of the invention, other configuration examples of LED lamp for vehicles lamp circuit are illustrated.

The LED lamp for vehicles lamp circuit 200 that second embodiment is related to is the same as the first embodiment, to two wheeler etc. The lighting for the LED light installed on vehicle (not shown) is controlled (Fig. 5).Further more, it is base in switching device SW that Fig. 5 is exemplified The state that quasi- node TB is not connected with first, second node T1, T2.In addition, identical with Fig. 1 symbol indicates and the in Fig. 5 The identical composition of one embodiment.

The LED lamp for vehicles lamp circuit 200 includes (Fig. 5)：First resistor R1, one end are connected with power supply line VCC, The other end is connected with the first contact T1；First LED light L1, one end are connected with datum node TB, the other end and second Contact T2 and ground line GND are connected；Switching device SW controls the electric current of the first LED light L1 of circulation；Second resistance R2, one end are connected with power supply line VCC；And the second LED light L2, one end are connected with the other end of second resistance R2, Its other end is connected with ground line GND.

That is, the LED lamp for vehicles lamp circuit of the LED lamp for vehicles lamp circuit 200 and first embodiment shown in FIG. 1 100 compare, and further comprise second resistance R2 and the second LED light L2.

Second LED light L2 is at least made of more than one second LED element D2.Also, one end of the second LED light L2 It is connected with the anode-side of the second LED element D2, the other end of the second LED light L2 is connected with the cathode side of the second LED element D2 It connects.Further more, the configuration example in Fig. 5 is that the second LED light L2 is connected in series by two the second LED element D2.

Second LED light L2 is, for example, head lamp, turn signal lamp, taillight, the clearance lamps, speed instruction of already described two wheeler Any one of lamp.

In addition, switching device SW is the same as the first embodiment, be connected between datum node TB and the first contact T1 It is switched between the second state (Fig. 7) be connected between first state (Fig. 6), with datum node TB and the second contact T2.

By the way that switching device SW is switched to first state, the second LED light L2 so that electric current I2 circulates makes the second LED light L2 lighting, meanwhile, electric current I1 the first LED light L1 of circulation makes the first LED light L1 lighting (Fig. 6).

On the other hand, by the way that switching device SW is switched to the second state, the second LED light L2 so that electric current I2 circulates makes Second LED light L2 lighting, meanwhile, one end of the first LED light L1 and the other end become same potential (that is, making at the first LED light L1 Not circulating current), so that the first LED light L1 be made to turn off the light (Fig. 7).

Herein, it is the same as the first embodiment, since switching device SW meets water, leads to the first contact T1 and the second contact T2 meets water, to be formed and conduct between the first contact T1 and the second contact T2 (due to water impedance RX and connect) and leakage of circulating Electric current IX (Fig. 8), like this, may circulate leakage current IX at switching device SW.

In addition, as described, the one end of second resistance R2 is connected with power supply line VCC, the other end of second resistance R2 It is connected with one end of the second LED light L2.

Also, be the same as the first embodiment, first resistor R1 under already described first state, resistance value be set to from The driving current that the power supply line VCC of offer supply voltage is provided to the first LED light L1 becomes the first specified value being preset.

Further, the resistance value of second resistance R2 is set to from the power supply line VCC of supply voltage is provided to the 2nd LED The driving current that lamp L2 is provided becomes the second specified value being preset.

In this way, in the case where the value of supply voltage is controlled in fixed stable value, no matter the first LED light L1 Whether lighting and whether there is leakage current IX, the second LED light L2 can be provided the driving current of second specified value, To which the second LED light L2 is with defined brightness lighting.

Further more, the other of LED lamp for vehicles lamp circuit shown in Fig. 5 200 are constituted, with the electricity of LED lamp for vehicles lighting shown in Fig. 1 Road 100 is identical.

Next, being illustrated to an example of the control method of the LED lamp for vehicles lamp circuit 200 with above-mentioned composition.

As described, for example, switching device SW for example by the operation of user, is switched to datum node TB and the first contact The first state (Fig. 6) be connected between T1.

In this way, the second LED light L2 of electric current I2 circulation, makes the second LED light L2 lighting, meanwhile, electric current I1 circulation first LED light L1 makes the first LED light L1 lighting (Fig. 6).

On the other hand, switching device SW for example by the operation of user, be switched to datum node TB and the second contact T2 it Between the second state (Fig. 7) for being connected.

In this way, the second LED light L2 of electric current I2 circulation, makes the second LED light L2 lighting, meanwhile, the one of the first LED light L1 End becomes same potential (that is, make the first LED light L1 at not circulating current) with the other end, (schemes so that the first LED light L1 be made to turn off the light 7)。

Herein, after meeting water as the switching device SW of mechanical bat-handle switch, lead to the first contact T1 and the second contact T2 meets water, to be formed and conduct between the first contact T1 and the second contact T2 (due to water impedance RX and connect) and leakage of circulating Electric current IX (Fig. 8).

In this case, one end of the first LED light L1 becomes with the other end by the way that switching device SW is switched to the second state Same potential, thus not circulating current at the first LED light L1.

Further more, other runnings of LED lamp for vehicles lamp circuit 200, with the point of LED lamp for vehicles shown in first embodiment The running of circuit for lamp 100 is identical.

That is, being the same as the first embodiment, the case where LED lamp for vehicles lamp circuit 200 is applied to the vehicles such as two wheeler Under, when switching device SW meets water, and leakage current IX is caused to circulate, also more effectively LED light can be turned off the light.

Third embodiment

In already described first embodiment, though what switching device SW was connected between datum node TB and the first contact T1 It is switched between the second state be connected between first state, with datum node TB and the second contact T2, as long as leakage current is not If circulation, just not circulating current at the second contact T2.In this case, the metal on the second surface contact T2 aoxidizes, or Whens by insulant attachment etc., the second contact T2 is possible to generate defective insulation.

It herein, will be with regard in the third embodiment, by making the second junction circulating current of switching device, to inhibit The oxidation of two point and the attachment of insulant, the LED lamp for vehicles inhibited so as to the defective insulation to the second contact The composition of lamp circuit is illustrated.

The LED lamp for vehicles lamp circuit 300 that third embodiment is related to is the same as the first embodiment, to two wheeler etc. The lighting for the LED light installed on vehicle (not shown) is controlled (Fig. 9).Further more, it is base in switching device SW that Fig. 9 is exemplified The state that quasi- node TB is not connected with first, second node T1, T2.In addition, identical with Fig. 1 symbol indicates and the in Fig. 9 The identical composition of one embodiment.

The LED lamp for vehicles lamp circuit 300 includes (Fig. 9)：First resistor R1, one end are connected with power supply line VCC, The other end is connected with the first contact T1；First LED light L1, one end are connected with datum node TB, the other end and second Contact T2 and ground line GND are connected；Switching device SW controls the electric current of the first LED light L1 of circulation；And electricity Container C1, one end are connected with datum node TB, and the other end is connected with the second contact T2.

That is, the LED lamp for vehicles lamp circuit of the LED lamp for vehicles lamp circuit 300 and first embodiment shown in FIG. 1 100 compare, and further comprise capacitor C1.

As described, capacitor C1, one end is connected with datum node TB, and the other end is connected with the second contact T2 It connects.

In addition, switching device SW is the same as the first embodiment, be connected between datum node TB and the first contact T1 It is switched between the second state (Figure 11) be connected between first state (Figure 10), with datum node TB and the second contact T2. In addition, the surface of the first contact T1 and the second contact T2 are for example by the metal containing Cu (copper) or Al (aluminium) as described It is covered.

By the way that switching device SW is switched to first state, the second LED light L2 so that electric current I2 circulates makes the second LED light L2 lighting, meanwhile, charging current IC circulated capacitor C1 is charged (Figure 10) to capacitor C1.At this point, being accumulated at capacitor C1 The charge of storage reaches the level of the VF voltage (being twice of VF voltage in the example of Figure 10) of the first LED element D1.

On the other hand, by the way that switching device SW is switched to the second state, one end of the first LED light L1 becomes with the other end Same potential (that is, make at the first LED light L1 not circulating current), so that the first LED light L1 is made to turn off the light, meanwhile, make capacitor C1 Electric discharge, circulate discharge current ID between datum node TB and the second contact T2.

In this way, it is possible to, identical with the lighting to the first LED light L1 and the frequency switched over of turning off the light frequency (that is, With to the identical frequency of the frequency of circulating current at the first contact T1), to the second contact T2 at circulating current.

In this way, inhibit the acidification of the second contact T2 and the attachment of insulant, to more effectively suppress The defective insulation of two point T2.That is, being able to suppress the decline of the performance of handoffs of switching device SW.

Further more, in order to inhibit the acidification of the second contact T2 and the attachment of insulant, so based on being flowed at switching device SW The value of logical discharge current determines the capacitance of capacitor C1.

Further more, the other of LED lamp for vehicles lamp circuit shown in Fig. 9 300 are constituted, with the electricity of LED lamp for vehicles lighting shown in Fig. 1 Road 100 is identical.

Also, there are other runnings of the LED lamp for vehicles lamp circuit 300 constituted above, with first embodiment institute The running of the LED lamp for vehicles lamp circuit 100 shown is identical.

That is, being the same as the first embodiment, LED lamp for vehicles lamp circuit 300 of the present embodiment is applied to two In the case where taking turns the vehicles such as vehicle, when switching device SW meets water, and leakage current IX is caused to circulate, also more effectively LED light can be gone out Lamp.

Further more, although present embodiment is suitable for the LED lamp for vehicles lamp circuit of first embodiment with regard to capacitor C1 Situation is illustrated, but capacitor C1 can also be suitable for the LED lamp for vehicles lamp circuit of second embodiment.

4th embodiment

Already described first into third embodiment, the just supply voltage for being controlled in maintenance level from power supply line The configuration example for being provided to LED lamp for vehicles lamp circuit is illustrated.

In present embodiment, an example including LED light lamp circuit and the LED light ignition device of power circuit is said It is bright.

The LED lamp for vehicles lamp circuit 400 that 4th embodiment is related to is as second embodiment, to two wheeler etc. The lighting for the LED light installed on vehicle (not shown) is controlled (Figure 12).Further more, Figure 12 is exemplified in switching device SW, The state that datum node TB is not connected with first, second node T1, T2.In addition, in Figure 12 identical with Fig. 5 symbol indicate with The identical composition of second embodiment.

The LED lamp for vehicles lamp circuit 400 includes (Figure 12)：First resistor R1, one end are connected with power supply line VCC, Its other end is connected with the first contact T1；First LED light L1, one end are connected with datum node TB, the other end and Two point T2 and ground line GND are connected；Switching device SW controls the electric current of the first LED light L1 of circulation；Capacitor C1, one end are connected with datum node TB, and the other end is connected with the second contact T2；And power circuit DS, to power supply Line VCC provides stable supply voltage.

That is, the LED lamp for vehicles lamp circuit of the LED lamp for vehicles lamp circuit 400 and second embodiment shown in fig. 5 200 compare, and further comprise power circuit DS.Power circuit DS controls the value of supply voltage in stable value.

Herein, as second embodiment, first resistor R1 in the first state, resistance value be set to from The driving current that the power supply line VCC of offer supply voltage is provided to the first LED light L1 becomes the first specified value being preset.

In this way, the value of supply voltage is controlled in the case where fixed stable value in power circuit DS, is passed through Switching device SW is switched to first state, the first LED light L1 is provided the driving current of first specified value, thus first LED light L1 can be with defined brightness lighting.

Further, as second embodiment, the resistance value of second resistance R2 is set to from offer supply voltage The driving current that is provided to the second LED light L2 of power supply line VCC become the second specified value being preset.

In this way, in the case where the value of supply voltage is controlled in fixed stable value by power circuit DS, nothing By the first LED light L1 whether lighting and whether there is leakage current IX, the second LED light L2 can all be provided it is described second regulation The driving current of value, so that the second LED light L2 can be with defined brightness lighting.

Further more, the other of LED lamp for vehicles lamp circuit shown in Figure 12 400 are constituted, with LED lamp for vehicles lighting shown in Fig. 5 Circuit 200 is identical.

Also, there are other runnings of the LED lamp for vehicles lamp circuit 400 constituted above, with second embodiment institute The running of the LED lamp for vehicles lamp circuit 300 shown is identical.

That is, LED lamp for vehicles lamp circuit 400 of the present embodiment is applied to two as second embodiment In the case where taking turns the vehicles such as vehicle, when switching device SW meets water, and leakage current IX is caused to circulate, also more effectively LED light can be gone out Lamp.

Further more, although present embodiment is mutually tied with regard to power circuit DS and the LED lamp for vehicles lamp circuit of second embodiment Situation after conjunction is illustrated, but can also be by power circuit DS and first, the LED lamp for vehicles lamp circuit of third embodiment It combines.

More than, several embodiments of the invention is illustrated, but these embodiments are to prompt as an example , there is no the intentions for limiting invention scope.These embodiments can be implemented by other various forms, and can be It does not depart from and carries out various omissions, replacement and change in the range of invention main idea.These embodiments or its variation are It is contained in invention scope or main idea, meanwhile, also it is contained within the range impartial with invention phase documented by claims In.

Claims

1. a kind of LED lamp for vehicles lamp circuit, controls the lighting for the LED light installed on vehicle, which is characterized in that packet It includes：

First LED light is made of the first LED element of at least more than one, and one end is connected with datum node, another End is connected with ground line；

Switching device will be connected between the datum node and the first contact being connected with power supply line so that electric current is described The first state to circulate between power supply line and described one end of first LED light, and with by the datum node and with it is described Described one end and institute so that first LED light are connected between the second contact that the other end of first LED light is connected The other end for stating the first LED light is in same potential, and by described one end of the power supply line and first LED light Between switch between the second state for blocking；And

First resistor, one end are connected with the power supply line for providing supply voltage, the other end and the first contact phase Connection.

2. LED lamp for vehicles lamp circuit according to claim 1, it is characterised in that：

Wherein, by the way that the switching device is switched to the first state, electric current is from the power supply line to first LED light Circulation makes the first LED light lighting,

By the way that the switching device is switched to second state, by described the one of the power supply line and first LED light It is blocked between end, so that first LED light is made to turn off the light, meanwhile, make described one end and described first of first LED light The other end of LED light is in same potential.

3. LED lamp for vehicles lamp circuit according to claim 1 or 2, it is characterised in that：

Wherein, in said second condition, not circulating current at first LED light.

4. LED lamp for vehicles lamp circuit according to claim 1 or 2, it is characterised in that：

Wherein, the datum node is only connected with described one end of first LED light, and/or is, second contact Only it is connected with the other end of first LED light and the ground line.

5. LED lamp for vehicles lamp circuit according to claim 1 or 2, it is characterised in that：

Wherein, the switching device once meets water, and leakage current can circulate between first contact and second contact.

6. LED lamp for vehicles lamp circuit according to claim 5, it is characterised in that：

Wherein, even if electric leakage flows to the switching device circulation, by the way that the switching device is switched to second state, then The other end of described one end of first LED light and first LED light would be at same potential, thus first Not circulating current at LED light.

7. LED lamp for vehicles lamp circuit according to claim 6, it is characterised in that：

Wherein, the value of the leakage current to circulate between first contact and second contact is greater than can be by described the The value of the driving current of one LED light lighting.

8. LED lamp for vehicles lamp circuit according to claim 1 or 2, it is characterised in that：

Wherein, under second state, the other end of described one end of first LED light and first LED light Ground connection, first LED light are turned off the light.

9. LED lamp for vehicles lamp circuit according to claim 5, it is characterised in that：

Wherein, the switching device once meets water, then first contact and second contact meet water, connects described first It is connected and the leakage current that circulates between point and second contact due to the impedance of water.

10. LED lamp for vehicles lamp circuit according to claim 1 or 2, it is characterised in that：

Wherein, described one end of first LED light is connected with the anode-side of first LED element, first LED light The other end is connected with the cathode side of first LED element.

11. LED lamp for vehicles lamp circuit according to claim 2, it is characterised in that：

It wherein, further comprise that one end is connected with the datum node, the capacitor that the other end is connected with second contact Device,

By the way that the switching device is switched to the first state, make electric current from the power supply line to the first LED light stream It is logical, to make the first LED light lighting on one side, charge on one side to the capacitor,

By the way that the switching device is switched to second state, by described the one of the power supply line and first LED light It is blocked between end, so that first LED light is made to turn off the light, meanwhile, make described one end and described of first LED light on one side The other end of one LED light is in same potential, makes the capacitor discharge on one side, to make electric current in the datum node It circulates between second contact.

12. a kind of LED lamp for vehicles ignition device, controls the lighting for the LED light installed on vehicle, which is characterized in that packet It includes：

Switching device, will between the datum node and the first contact being connected with power supply line conducting and electric current described The first state to circulate between power supply line and described one end of first LED light, and with by the datum node and with it is described It is connected between the second contact that the other end of first LED light is connected, makes described one end of first LED light and described The other end of first LED light is in same potential, and by described one end of the power supply line and first LED light it Between switch between the second state for blocking；

Power circuit supplies stable supply voltage to the power supply line；And

First resistor, one end are connected with the power supply line for providing the supply voltage, and the other end connects with described first Point is connected.

13. a kind of control method of LED lamp for vehicles lamp circuit, controls the lighting for the LED light installed on vehicle, special Sign is, including：

First resistor, one end are connected with the power supply line for providing supply voltage, the other end and the first contact phase Connection,