CN106465509A

CN106465509A - Vehicle led lamp lighting circuit, vehicle led lamp lighting device, and method for controlling vehicle led lamp lighting circuit

Info

Publication number: CN106465509A
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: 2017-02-22
Anticipated expiration: 2035-03-27
Also published as: WO2016157319A1; TW201641874A; JPWO2016157319A1; TWI585336B; CN106465509B; JP6062603B1

Abstract

This vehicle LED lamp lighting circuit controls lighting of an LED lamp mounted on a vehicle, and is provided with: a first resistor which has one end connected to a power supply line for feeding power supply voltage and has the other end connected to a first contact; a first LED lamp which is formed of at least one first LED element, and which has one end connected to a reference node and has the other end connected to a second contact and a grounded ground wire; and a switching device exposed to water which switches between a first state where the reference node and the first contact have electrical continuity and a second state where the reference node and the second contact have electrical continuity.

Description

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

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 technology

Generally, LED (LightEmittingDiode light emitting diode) lamp (Lamp) can rely on low-voltage lighting, and white Vehement lamp (Filament) (bulb (Bulb lamp)) etc. is compared with life-span length, and consumption electric power is low, and response speed is fast, Yi Jinai The feature of impact, can seek small-sized, lightweight.Therefore, LED can be perfectly suitable for the head lamp (Head of such as vehicle The occasion such as lamp).

As one kind of such a LED ignition device, for example, have as JP 2014-69694 and patent the The LED lighting control device that No. 5577457 are shown.In conventional this LED point lamp control device, have to LED Lighting/turn off the light switch (Switch) the device SWa (Figure 14) being controlled.

Here, for example in the lamp circuit of conventional bulb, when the lighting to lamp/switching device being controlled of turning off the light SWa once meets water when ending (Off) state, and leakage current (Leakage current) will flow to switching device SWa.Here In the case of, because leakage current is little, bulb will not be lit (Figure 13).

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

So, in conventional LED lamp for vehicles lamp circuit, possess the switch of the external circuit preventing leakage current by application Device, and there is the switching device of water-proof function, to suppress the wrong lighting of LED.

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

Therefore, it is an object of the invention to provide one kind can not only cut down cost, control can be flowed to due to leakage current simultaneously The switch of LED lighting processed is thus the LED lamp for vehicles lamp circuit that suppressed of the LED mistake lighting that causes.

Content of the invention

A kind of LED lamp for vehicles lamp circuit of the embodiment that a kind of form according to the present invention is related to, installs on vehicle The lighting of LED be controlled it is characterised in that including：

First resistor, its one end is connected with the power line providing supply voltage, and its other end is electrically connected with the first contact；

First LED, is made up of the first LED element of at least more than one, its one end and datum node (Node) phase Connect, its other end is connected with the earth lead of the second contact and grounding connection；And

Switching device, the first state of conducting between described datum node and described first contact, and by described benchmark Switch between second state of conducting between node and described second contact.

Described LED lamp for vehicles lamp circuit it is characterised in that：

Wherein, by described switching device is switched to described first state, make described first LED lighting,

By described switching device is switched to described second state, make described one end of described first LED and described The other end is in same potential, so that described first LED is turned off the light.

Described LED lamp for vehicles lamp circuit is it is characterised in that further include：

Capacitor, its one end is connected with described datum node, and its other end is connected with described second contact,

Wherein, by described switching device is switched to described first state, make described first LED lighting, simultaneously right Described capacitor is charged,

By described switching device is switched to described second state, make described one end of described first LED with described The other end is in compatible current potential, so that described first LED is turned off the light, meanwhile, makes described capacitor discharge, in described benchmark section Circulating current between point and described second contact.

Described LED lamp for vehicles lamp circuit it is characterised in that：

Described first contact and the surface of described second contact, are covered by the metal containing Cu (copper) or Al (aluminum).

Second resistance, its one end is connected with described power line；And

Second LED, is made up of the second LED element of at least more than one, and its one end is another with described second resistance One end is connected, and its other end is connected with described earth lead.

Described LED lamp for vehicles lamp circuit it is characterised in that：

Wherein, by described switching device is switched to described first state, make described second LED lighting, make simultaneously Described first LED lighting,

By described switching device is switched to described second state, make described second LED lighting, meanwhile, make described Described one end of first LED and the described other end are in same potential, so that described first LED is turned off the light.

Described LED lamp for vehicles lamp circuit it is characterised in that：

Wherein, water once met by described switching device, and leakage current can flow between described first contact and described second contact Logical.

Described LED lamp for vehicles lamp circuit it is characterised in that：

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

Described LED lamp for vehicles lamp circuit it is characterised in that：

Wherein, the value of the described leakage current circulating between described first contact and described second contact is more than can be by institute State the value of the driving current of the first LED lighting.

Described LED lamp for vehicles lamp circuit it is characterised in that：

Wherein, by the operation of user (User), switch between described first state and described second state.

Described LED lamp for vehicles lamp circuit it is characterised in that：

Wherein, described LED lamp for vehicles lamp circuit is arranged on two wheeler, described first LED and/or be described Two LED are head lamp (Head light), turn signal lamp (Winker), taillight (Tail lamp), clearance lamps (Position Lamp), any one in speed light (Meter illumination),

Described switching device is the mechanical handle of the described two wheeler for controlling described first LED lighting (Handle switch) switchs.

Described LED lamp for vehicles lamp circuit it is characterised in that：

Wherein, water once met by described switching device, then described first contact and described second contact meet water, thus described Conduct and circulate between first contact and described second contact leakage current.

Described LED lamp for vehicles lamp circuit it is characterised in that：

Wherein, the value of described supply voltage is controlled in stable value.

Described LED lamp for vehicles lamp circuit it is characterised in that：

Wherein, in described first state, resistance value is set to from the institute providing described supply voltage first resistor The driving current that stating power line provides to described first LED becomes the first setting being preset,

The resistance value of second resistance be set to from provide described supply voltage described power line to described second LED The driving current providing becomes the second setting being preset.

Described LED lamp for vehicles lamp circuit it is characterised in that：

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

A kind of LED lamp for vehicles ignition device of the embodiment that a kind of form according to the present invention is related to, installs on vehicle The lighting of LED be controlled it is characterised in that including：

First resistor, its one end is connected with power line, and its other end is electrically connected with the first contact；

First LED, is made up of the first LED element of at least more than one, its one end is connected with datum node, its The other end is connected with the earth lead of the second contact and grounding connection；

Switching device, the first state of conducting between described datum node and described first contact, and by described benchmark Switch between second state of conducting between node and described second contact；And

Power circuit, provides stable supply voltage to described power line.

A kind of control method of LED lamp for vehicles lamp circuit of the embodiment that a kind of form according to the present invention is related to is right On vehicle install LED lighting be controlled it is characterised in that：

Including first resistor, its one end is connected with the power line of offer supply voltage, its other end and the first contact Electrical connection；First LED, is made up of the first LED element of at least more than one, its one end is connected with datum node, its The other end is connected with the earth lead of the second contact and grounding connection；And switching device, described datum node with described Between first contact conducting first state, and by between described datum node and described second contact conducting the second state it Between switch in the control method of LED lamp for vehicles lamp circuit,

By described switching device is switched to described first state, make described first LED lighting,

Invention effect

A kind of LED lamp for vehicles lamp circuit of the embodiment that a kind of form according to the present invention is related to, installs on vehicle The lighting of LED be controlled, it includes：First resistor, its one end is connected with the power line being provided supply voltage, its The other end is connected with the first contact；First LED, is made up of the first LED element of at least more than one, its one end and base Quasi- node TB is connected, and its other end is connected with the earth lead of the second contact T2 and ground connection；And, switching device, The first state of conducting between datum node TB and the first contact, the second of conducting and datum node TB and the second contact T2 between Switch between state.

In this LED lamp for vehicles lamp circuit, by switching device is switched to first state, then it is derived from the driving of power line Electric current is supplied to the first LED, thus the first LED lighting.On the other hand, by switching device is switched to the second state, Then between one end of the first LED and the other end short circuit and be changed into same potential, thus the first LED is turned off the light.

By so, for example, in the case that LED lamp for vehicles lamp circuit is applied to two wheeler, when water met by switching device Lead to during leakage current circulation it is also possible to more effectively LED be turned off the light.

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

By so, switching device avoids the need for possessing the external circuit preventing leakage current or water-proof function, can use The switching device of low price.Therefore it becomes possible to cut down the manufacturing cost of LED lamp for vehicles lamp circuit.

Therefore, according to LED lamp for vehicles lamp circuit according to the present invention, while cutting down manufacturing cost, can suppress The wrong lighting of the LED due to leading at the switching device of leakage current flow quantity control LED lighting.

Brief description

Fig. 1 is to show that a kind of form of the present invention is LED lamp for vehicles lamp circuit 100 involved by first embodiment The illustration constituting is intended to.

Fig. 2 is that the switching device SW showing the LED lamp for vehicles lamp circuit 100 shown in Fig. 1 switches to first state, first The illustration during lighting of LED L1 is intended to.

Fig. 3 is that the switching device SW showing the LED lamp for vehicles lamp circuit 100 shown in Fig. 1 switches to the second state, first Illustration when LED L1 is turned off the light is intended to.

Fig. 4 is that the switching device SW showing the LED lamp for vehicles lamp circuit 100 shown in Fig. 1 switches to the second state, first In the case that LED L1 is turned off the light, switching device SW meets water and an illustration of the state of the leakage current that circulates is intended to.

Fig. 5 is to show that a kind of form of the present invention is LED lamp for vehicles lamp circuit 200 involved by second embodiment The illustration constituting is intended to.

Fig. 6 is that the switching device SW showing the LED lamp for vehicles lamp circuit 200 shown in Fig. 5 switches to first state, first The illustration during lighting of LED L1 is intended to.

Fig. 7 is that the switching device SW showing the LED lamp for vehicles lamp circuit 200 shown in Fig. 5 switches to the second state, first Illustration when LED L1 is turned off the light is intended to.

Fig. 8 is that the switching device SW showing the LED lamp for vehicles lamp circuit 200 shown in Fig. 5 switches to the second state, first In the case that LED L1 is turned off the light, switching device SW meets water and an illustration of the state of the leakage current that circulates is intended to.

Fig. 9 is to show that a kind of form of the present invention is LED lamp for vehicles lamp circuit 300 involved by the 3rd embodiment The illustration constituting is intended to.

Figure 10 is that the switching device SW showing the LED lamp for vehicles lamp circuit 300 shown in Fig. 9 switches to first state, the Illustration during one LED L1 lighting is intended to.

Figure 11 is that the switching device SW showing the LED lamp for vehicles lamp circuit 300 shown in Fig. 9 switches to the second state, the Illustration when one LED L1 is turned off the light is intended to.

Figure 12 is to show that a kind of form of the present invention is LED lamp for vehicles lamp circuit 400 involved by the 4th embodiment Composition one illustration be intended to.

Figure 13 is that the illustration showing the conventional composition of incandescent lamp bulb lamp circuit is intended to.

Figure 14 is that the illustration showing the conventional composition of LED lamp circuit is intended to.

Specific embodiment

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

First embodiment

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

This LED lamp for vehicles lamp circuit 100 includes (Fig. 1)：First resistor R1, its one end is connected with power line VCC, its The other end is connected with the first contact T1；First LED L1, its one end is connected with datum node TB, its other end and second Contact T2 and earth lead GND is connected；And, switching device SW, the electric current of first LED L1 that circulates is controlled.

This LED lamp for vehicles lamp circuit 100 is for example arranged on the vehicle of already described two wheeler etc..

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

Earth lead GND grounding connection.Further, the current potential of this ground connection is not defined as 0V, and it is set at least Enough by LED lighting less than the fixation of supply voltage current potential.

In addition, the first LED L1 is at least made up of more than one first LED element D1.And, the first LED L1 One end be connected with the anode-side of the first LED element D1, the negative electrode of the other end of the first LED L1 and the first LED element D1 Side is connected.Further, the configuration example in Fig. 1 is in series by two the first LED element D1 for the first LED L1 and forms.

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

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

For example, by switching device SW is switched to first state, the first LED L1 thus electric current I1 circulates, make first LED L1 lighting (Fig. 3).

This switching device SW, for example by the operation of user, is cut between already described first state and the second state Change.

Switching device SW is, for example, the mechanical type of the already described two wheeler being used for the lighting of the first LED L1 is controlled Bat-handle switch (Handle switch).Further, this switching device SW has more easily constructing, for example, it is provided with for preventing The external circuit of leakage current IX or water-proof function.

Therefore, after switching device SW meets water, the first contact T1 and the second contact T2 is led to meet water, thus the first contact T1 Formed between the second contact T2 and conduct (being connected due to the impedance RX of water) the leakage current IX (Fig. 4) that circulates.Like this, leak Electric current IX may circulate at switching device SW.

For example, the value of the leakage current IX circulating between the first contact T1 and the second contact T2 of switching device SW, sometimes Can be more than the value of the driving current that can make the first LED L1 lighting.

Now, at the first LED L1 if upon this leakage current IX circulates, then the first LED L1 may be by wrong lighting. Even if however, in the state of being changed at switching device SW circulation leakage current IX, by switching device SW is switched to the second state, Then one end of the first LED L1 and the other end are changed into same potential, thus not circulating current at the first LED L1.

That is, can suppress due to the wrong lighting of the first LED L1 leading at leakage current IX circulation switching device SW.

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

Under already described first state, resistance value is set to from the power line providing supply voltage this first resistor R1 The driving current that VCC provides to the first LED L1 becomes the first setting being preset.

By so, in the case that the value of supply voltage is controlled in fixed stable value, by by switching device SW switches to first state, and the first LED L1 is provided the driving current of described first setting, thus the first LED L1 with The brightness lighting of regulation.

Next, one just with the control method of LED lamp for vehicles lamp circuit 100 of above-mentioned composition illustrates.

The operation by user for the such as switching device SW as described, switches between datum node TB and the first contact T1 The first state (Fig. 2) of conducting.By so, at current flowing first LED L1, so that the first LED L1 lighting (is schemed 2).

On the other hand, the operation by user for the switching device SW, switches to and leads between datum node TB and the second contact T2 Logical the second state (Fig. 3).By so, one end of the first LED L1 and the other end are changed into same potential (that is, the first LED Not circulating current at L1) so that the first LED L1 is turned off the light (Fig. 3).

Herein, due to belong to mechanical bat-handle switch switching device SW meet water, then the first contact T1 and second connect Point T2 meets water, thus formed between the first contact T1 and the second contact T2 and conducting (being connected due to the impedance RX of water) and circulate Leakage current IX (Fig. 4).

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

As above, the LED lamp for vehicles lamp circuit 100 being related to according to a kind of form of the present invention, installs on vehicle The lighting of LED be controlled, it includes：First resistor R1, its one end is connected with the power line being provided supply voltage, Its other end is connected with the first contact T1；First LED L1, is made up of the first LED element D1 of at least more than one, its One end is connected with datum node TB, and its other end is connected with the earth lead GND of the second contact T2 and ground connection；And, Switching device SW, the first state of conducting between datum node TB and the first contact T1, and datum node TB and the second contact Switch between second state of conducting between T2.

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

On the other hand, by switching device SW is switched to the second state, then one end of the first LED L1 and the other end it Between short circuit and be changed into same potential, thus the first LED L1 is turned off the light.

By so, for example, in the case that LED lamp for vehicles lamp circuit 100 is applied to the vehicles such as two wheeler, working as switch Device SW meets water and leads to during leakage current IX circulation it is also possible to more effectively LED be turned off the light.

And, after switching device SW meets water, even if being changed between the first contact T1 of switching device SW and the second contact T2 The state of circulation leakage current IX, switching device SW has also been switched for the second state.By so, the one of the first LED L1 End and the other end are changed into same potential, not circulating current at the first LED L1.

By so, as described, switching device SW avoids the need for for preventing the external circuit of leakage current IX or preventing Water function is such that it is able to use the switching device SW of low price.Accordingly, it is possible to cut down being manufactured into of LED lamp for vehicles lamp circuit This.

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

Second embodiment

In second embodiment of the invention, other configuration examples with regard to LED lamp for vehicles lamp circuit illustrate.

The LED lamp for vehicles lamp circuit 200 that second embodiment is related to as first embodiment, to two wheeler etc. The lighting of the vehicle upper LED installed (not shown) is controlled (Fig. 5).Further, being base in switching device SW exemplified by Fig. 5 The state that quasi- node TB is not connected with first, second node T1, T2.In addition, representing with Fig. 1 identical symbol in Fig. 5 and the One embodiment identical is constituted.

This LED lamp for vehicles lamp circuit 200 includes (Fig. 5)：First resistor R1, its one end is connected with power line VCC, its The other end is connected with the first contact T1；First LED L1, its one end is connected with datum node TB, its other end and second Contact T2 and earth lead GND is connected；Switching device SW, is controlled to the electric current of first LED L1 that circulates；Second resistance R2, its one end is connected with power line VCC；And, the second LED L2, its one end is connected with the other end of second resistance R2, Its other end is connected with earth lead GND.

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

Second LED L2 is at least made up of more than one second LED element D2.And, one end of the second LED L2 It is connected with the anode-side of the second LED element D2, the other end of the second LED L2 is connected with the cathode side of the second LED element D2 Connect.Further, the configuration example in Fig. 5 is in series by two the second LED element D2 for the second LED L2 and forms.

This second LED L2 is, for example, the already described head lamp of two wheeler, turn signal lamp, taillight, clearance lamps, speed instruction One of lamp.

In addition, switching device SW is as first embodiment, conducting between datum node TB and the first contact T1 Switch between second state (Fig. 7) of conducting between first state (Fig. 6), and datum node TB and the second contact T2.

By switching device SW is switched to first state, the second LED L2 thus electric current I2 circulates, make the second LED L2 lighting, meanwhile, electric current I1 circulation the first LED L1, make the first LED L1 lighting (Fig. 6).

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

Herein, as first embodiment, because switching device SW meets water, the first contact T1 and the second contact are led to T2 meets water, thus formed between the first contact T1 and the second contact T2 and conducting (being connected due to the impedance RX of water) and circulate Lou Electric current IX (Fig. 8), like this, may circulate at switching device SW leakage current IX.

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

And, as first embodiment, first resistor R1 under already described first state, resistance value be set to from The driving current that the power line VCC of supply voltage provides to the first LED L1 is provided to become the first setting being preset.

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

By so, in the case that the value of supply voltage is controlled in fixed stable value, no matter the first LED L1 Whether lighting and whether there is leakage current IX, the second LED L2 all can be provided the driving current of described second setting, Thus the brightness lighting to specify for second LED L2.

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

Next, illustrating to 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, switches to datum node TB and the first contact The first state (Fig. 6) of conducting between T1.

By so, electric current I2 circulates the second LED L2, makes the second LED L2 lighting, meanwhile, electric current I1 circulation first LED L1, makes the first LED L1 lighting (Fig. 6).

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

By so, electric current I2 circulates the second LED L2, makes the second LED L2 lighting, meanwhile, the one of the first LED L1 End and the other end are changed into same potential (that is, make the first LED L1 at not circulating current), so that the first LED L1 is turned off the light (scheming 7).

Herein, as mechanical type bat-handle switch switching device SW meet water after, lead to the first contact T1 and the second contact T2 meets water, thus formed between the first contact T1 and the second contact T2 and conducting (being connected due to the impedance RX of water) and circulate Lou Electric current IX (Fig. 8).

In the case of this, by switching device SW is switched to the second state, one end of the first LED L1 and the other end are changed into Same potential, thus not circulating current at the first LED L1.

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

That is, as first embodiment, LED lamp for vehicles lamp circuit 200 is applied to the situation of the vehicles such as two wheeler Under, when switching device SW meets when water leads to leakage current IX circulation it is also possible to more effectively LED be turned off the light.

3rd embodiment

In already described first embodiment, though what switching device SW turned between datum node TB and the first contact T1 Switch over, as long as leakage current is not between second state of conducting between first state, and datum node TB and the second contact T2 If circulation, just not circulating current at the second contact T2.In the case of this, the metal on the second contact T2 surface aoxidizes, or When being adhered to etc. by insulant, the second contact T2 is possible to produce defective insulation.

Herein, by making the second junction circulating current of switching device, should be suppressed in the 3rd embodiment The attachment of the oxidation of two point and insulant is such that it is able to LED lamp for vehicles that the defective insulation of the second contact is suppressed The composition of lamp circuit illustrates.

The LED lamp for vehicles lamp circuit 300 that 3rd embodiment is related to as first embodiment, to two wheeler etc. The lighting of the vehicle upper LED installed (not shown) is controlled (Fig. 9).Further, being base in switching device SW exemplified by Fig. 9 The state that quasi- node TB is not connected with first, second node T1, T2.In addition, representing with Fig. 1 identical symbol in Fig. 9 and the One embodiment identical is constituted.

This LED lamp for vehicles lamp circuit 300 includes (Fig. 9)：First resistor R1, its one end is connected with power line VCC, its The other end is connected with the first contact T1；First LED L1, its one end is connected with datum node TB, its other end and second Contact T2 and earth lead GND is connected；Switching device SW, is controlled to the electric current of first LED L1 that circulates；And, electricity Container C1, its one end is connected with datum node TB, and its other end is connected with the second contact T2.

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

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

In addition, switching device SW is as first embodiment, conducting between datum node TB and the first contact T1 Switch between second state (Figure 11) of conducting between first state (Figure 10), and datum node TB and the second contact T2. In addition, as described, the first contact T1, and the surface of the second contact T2 is for example by the metal containing Cu (copper) or Al (aluminum) Covered.

By switching device SW is switched to first state, the second LED L2 thus electric current I2 circulates, make the second LED L2 lighting, meanwhile, charging current IC circulated capacitor C1, (Figure 10) is charged to capacitor C1.Now, long-pending at capacitor C1 The electric charge storing reaches the level of the VF voltage (in the example of Figure 10, be the twice of VF voltage) of the first LED element D1.

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

In this way, it is possible to with the lighting to the first LED L1 and turn off the light the frequency identical frequency switching over (i.e., Frequency identical frequency with the circulating current at the first contact T1), the circulating current at the second contact T2.

By so, to suppress the acidifying of the second contact T2 and the attachment of insulant, thus more effectively suppression the The defective insulation of two point T2.That is, the decline of the performance of handoffs of switching device SW can be suppressed.

Further, in order to suppress the acidifying of the second contact T2 and the attachment of insulant, so flow based at switching device SW The value of logical discharge current is determining the capacitance of capacitor C1.

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

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

That is, as first embodiment, LED lamp for vehicles lamp circuit 300 of the present embodiment is applied to two In the case of the vehicles such as wheel car, when switching device SW meets when water leads to leakage current IX circulation it is also possible to more effectively LED be gone out Lamp.

Although further, present embodiment is applied to the LED lamp for vehicles lamp circuit of first embodiment with regard to capacitor C1 Situation is illustrated, but capacitor C1 also can be applied to the LED lamp for vehicles lamp circuit of second embodiment.

4th embodiment

In the already described first to the 3rd embodiment, just from the supply voltage being controlled in maintenance level of power line The configuration example being provided to LED lamp for vehicles lamp circuit is illustrated.

In present embodiment, inclusion LED lamp circuit is said with of the LED ignition device of power circuit Bright.

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

This LED lamp for vehicles lamp circuit 400 includes (Figure 12)：First resistor R1, its one end is connected with power line VCC, Its other end is connected with the first contact T1；First LED L1, its one end is connected with datum node TB, its other end and Two point T2 and earth lead GND is connected；Switching device SW, is controlled to the electric current of first LED L1 that circulates；Capacitor C1, its one end is connected with datum node TB, and its 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 this LED lamp for vehicles lamp circuit 400 and the second embodiment shown in Fig. 5 200 compare, and further include power circuit DS.This power circuit DS controls the value of supply voltage in stable value.

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

By so, the value of supply voltage being controlled in the case of fixed stable value in power circuit DS, passing through Switching device SW is switched to first state, the first LED L1 is provided the driving current of described first setting, thus first LED L1 can be with the brightness lighting of regulation.

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

By so, in the case that the value of supply voltage is controlled in fixed stable value by power circuit DS, no By the whether lighting of the first LED L1 and whether there is leakage current IX, the second LED L2 all can be provided described second regulation The driving current of value, thus the second LED L2 can be with the brightness lighting of regulation.

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

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

That is, as second embodiment, LED lamp for vehicles lamp circuit 400 of the present embodiment is applied to two In the case of the vehicles such as wheel car, when switching device SW meets when water leads to leakage current IX circulation it is also possible to more effectively LED be gone out Lamp.

Although further, present embodiment is with regard to the LED lamp for vehicles lamp circuit phase knot of power circuit DS and second embodiment Situation after conjunction is illustrated, but also can be by the LED lamp for vehicles lamp circuit of power circuit DS and first, the 3rd embodiment Combine.

More than, several embodiments of the invention is illustrated, but these embodiments are to point out as an example , do not limit the intention of invention scope.These embodiments can be implemented by other various forms, and can be Without departing from carry out in the range of invention main idea a variety of omissions, replace and change.These embodiments or its variation are It is contained in invention scope or main idea, meanwhile, be also contained within the scope mutually impartial with the invention described in claims In.

Claims

1. a kind of LED lamp for vehicles lamp circuit, the lighting to the LED installed on vehicle is controlled it is characterised in that wrapping Include：

First LED, is made up of the first LED element of at least more than one, its one end is connected with datum node, and it is another End is connected with the earth lead of the second contact and grounding connection；And

Switching device, the first state of conducting between described datum node and described first contact, and by described datum node Switch between second state of conducting and described second contact between.

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

By described switching device is switched to described second state, make described one end of described first LED and described another End is in same potential, so that described first LED is turned off the light.

3. LED lamp for vehicles lamp circuit according to claim 2 is it is characterised in that further include：

Wherein, by described switching device is switched to described first state, make described first LED lighting, simultaneously to described Capacitor is charged,

By described switching device is switched to described second state, make described one end of described first LED another with described End be in compatible current potential so that described first LED is turned off the light, meanwhile, make described capacitor discharge, described datum node with Circulating current between described second contact.

4. LED lamp for vehicles lamp circuit according to claim 3 it is characterised in that：

5. LED lamp for vehicles lamp circuit according to claim 2 is it is characterised in that further include：

Second resistance, its one end is connected with described power line；And

Second LED, is made up of the second LED element of at least more than one, the other end of its one end and described second resistance It is connected, its other end is connected with described earth lead.

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

Wherein, by described switching device is switched to described first state, make described second LED lighting, make described simultaneously First LED lighting,

By described switching device is switched to described second state, make described second LED lighting, meanwhile, make described first Described one end of LED and the described other end are in same potential, so that described first LED is turned off the light.

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

Wherein, water once met by described switching device, and leakage current can circulate between described first contact and described second contact.

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

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

9. LED lamp for vehicles lamp circuit according to claim 8 it is characterised in that：

Wherein, between described first contact and described second contact the value of the described leakage current of circulation be more than can be by described the The value of the driving current of one LED lighting.

10. LED lamp for vehicles lamp circuit according to claim 8 it is characterised in that：

Wherein, by the operation of user, switch between described first state and described second state.

11. LED lamp for vehicles lamp circuits according to claim 3 it is characterised in that：

Wherein, described LED lamp for vehicles lamp circuit is arranged on two wheeler,

Described first LED and/or be described second LED be head lamp, turn signal lamp, taillight, clearance lamps, speed instruction Any one in lamp,

Described switching device is the mechanical bat-handle switch of the described two wheeler for controlling described first LED lighting.

12. LED lamp for vehicles lamp circuits according to claim 7 it is characterised in that：

Wherein, water once met by described switching device, then described first contact and described second contact meet water, thus described first Conduct and circulate between contact and described second contact leakage current.

13. LED lamp for vehicles lamp circuits according to claim 4 it is characterised in that：

Wherein, the value of described supply voltage is controlled in stable value.

14. LED lamp for vehicles lamp circuits according to claim 11, the lighting to the LED installed on vehicle is controlled System it is characterised in that：

Wherein, in described first state, resistance value is set to from the described electricity providing described supply voltage first resistor The driving current that source line provides to described first LED becomes the first setting being preset,

The described power line that the resistance value of second resistance is set to from providing described supply voltage provides to described second LED Driving current become the second setting being preset.

15. LED lamp for vehicles ignition devices according to claim 12, the lighting to the LED installed on vehicle is controlled System it is characterised in that：

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

A kind of 16. LED lamp for vehicles ignition devices, the lighting to the LED installed on vehicle is controlled it is characterised in that wrapping Include：

First LED, is made up of the first LED element of at least more than one, its one end is connected with datum node, and it is another End is connected with the earth lead of the second contact and grounding connection；

Switching device, the first state of conducting between described datum node and described first contact, and by described datum node Switch between second state of conducting and described second contact between；And

Power circuit, provides stable supply voltage to described power line.

A kind of 17. control methods of LED lamp for vehicles lamp circuit, the lighting to the LED installed on vehicle is controlled, and it is special Levy and be：

Including first resistor, its one end is connected with the power line providing supply voltage, and its other end is electrically connected with the first contact Connect；First LED, is made up of the first LED element of at least more than one, its one end is connected with datum node, and it is another End is connected with the earth lead of the second contact and grounding connection；And switching device, in described datum node and described first The first state of conducting between contact, and will enter between the second state of conducting between described datum node and described second contact In the control method of row switching LED lamp for vehicles lamp circuit,