CN110139421A - Alternating turns on and off the circuit device of at least two electrically in parallel lamp branches of headlight - Google Patents
Alternating turns on and off the circuit device of at least two electrically in parallel lamp branches of headlight Download PDFInfo
- Publication number
- CN110139421A CN110139421A CN201910103130.0A CN201910103130A CN110139421A CN 110139421 A CN110139421 A CN 110139421A CN 201910103130 A CN201910103130 A CN 201910103130A CN 110139421 A CN110139421 A CN 110139421A
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- China
- Prior art keywords
- lamp
- branch
- lamp branch
- circuit device
- parallel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
- H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
Landscapes
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The present invention relates to a kind of for alternately turning on and off the circuit device (1) of at least two electrically in parallel lamp branches of headlight for vehicle, it include: parallel circuit, it has at least two electrically in parallel lamp branches, wherein each lamp branch routes multiple light source (7) compositions electrically coupled in series each other；At least one energy source (5) for giving parallel circuit (4) to power, wherein parallel circuit (4) is connect with energy source (5) and/or energy source (5) is designed to, so that under switch element (6) on state, the voltage being applied on parallel circuit (4) is in the working range of the first lamp branch (2) and thereby turns on the second lamp branch (3) of the first lamp branch (2) and shutdown, and under switch element (6) not on-state, the voltage being applied on parallel circuit (4) improve to the working range of the second lamp branch (3) and therefore turn off the first lamp branch (2) with connect the second lamp branch (3).
Description
Technical field
The present invention relates to a kind of for alternately turning on and off the circuit of at least two electrically in parallel lamp branches of headlight for vehicle
Device, the circuit device include: parallel circuit, which has at least two electrically in parallel lamp branches, wherein each lamp
Branch routes multiple light source compositions electrically coupled in series each other；At least one is used for the energy source powered to parallel circuit, and wherein at least two
The first lamp branch in a electrically in parallel lamp branch has a working range, which has for running the first lamp branch
The lower voltage limit and upper voltage limit on road, and the second lamp branch in the electrically in parallel lamp branch of wherein at least two has a work
Make range, which has the lower voltage limit and upper voltage limit for running the second lamp branch, wherein the first lamp branch
Upper voltage limit is lower than the lower voltage limit of the second lamp branch, wherein the first lamp branch is connected with switch element.
In addition, the present invention relates to a kind of lighting devices with circuit device according to the present invention and one kind to have basis
The headlight for vehicle of lighting device of the invention.
Background technique
Known following circuits device from the prior art, wherein described for turning on and off for the distribution of each light source branch
The switch element of light source branch.In order to realize the light transformation from a branch to another branch, need to transmit so far
Two signals, i.e. the first switch signal for deactivating the switch element of the first branch and the switch member for activating second branch
The second switch signal of part.Such as can by alternative structure mode or unsuitable headlight for vehicle application that change-over switch includes,
It is with high costs.
Summary of the invention
Therefore, it is an object of the present invention to realize a kind of reliable and cost-effective circuit device, it can be realized, borrow
The presence (i.e. in response to circuit state) of the unique switching signal of only one is helped to cause the transformation of the operation of at least two branches.
The purpose refers to the circuit device of type to realize, wherein parallel circuit and energy source according to the present invention by beginning
Connection and/or energy source are designed to, so that the voltage being applied on parallel circuit is under the on state of switch element
In the working range of first lamp branch and the second lamp branch of the first lamp branch and shutdown is thereby turned on, and in switch element
Under not on-state, the voltage being applied on parallel circuit improves to the working range of the second lamp branch and therefore turns off first
Lamp branch with connect the second lamp branch.
It is possible thereby to abandon setting second switch element in the following manner, i.e., by uniquely can only " lead in state
It is logical " and " being not turned on " between the switch element that switches have been able to realize that the alternating between at least two branches switches, wherein
For control, the unique signal wire of only one is sufficient, which is related to reference potential (for example, the ground electricity in vehicle
Position).
Statement " multiple " is understood as example can be one (as long as no otherwise indicated) scope of the present disclosure interior,
Two, three, four or more, especially six, eight, ten, 12, or the quantity more than 12.Those skilled in the art
Member can correspondingly select the quantity of respective sources according to the application purpose of circuit device.
Preferably it can be stated that all light source leds of lamp branch are that structure is identical, and is especially equipped with defined
Forward voltage.
Furthermore it can be stated that the quantity of concatenated LED is different from each other in lamp branch, wherein especially it can be stated that all lamps
The LED of branch is that structure is identical.In this way it is possible to generate lamp branch, the lamp in a manner of highly effective and is simple
Branch has different working ranges about its working voltage.
Instead of this place it can be stated that the quantity of concatenated LED is identical at least two lamp branches, wherein described
The forward voltage of the LED of two lamp branches is different, and more specifically in the following manner, i.e. the upper voltage limit of the first lamp branch is lower than
The lower voltage limit of second lamp branch.
Furthermore it can be stated that energy source is constant current source.In this way, it such as can be particularly easy to realize one kind
Device, wherein being absorbed by all electric currents that energy source provides by the first branch in the case where connecting the first branch, and corresponding
Ground is applied to the voltage on parallel circuit and is in the working range of the first branch.For example, branch can have it is identical specified
Electric current, and the output electric current of constant current source can be rated current, so that can always be supplied simultaneously to only one branch
Electricity.
Suitably it can be stated that switch element is relay or transistor, especially MOSFET or bipolar transistor.
Furthermore it can be stated that the switching voltage of switch element is between 5V and 24V.
Furthermore it can be stated that the voltage being applied on parallel circuit provided by energy source is between 2 and 60V, especially
Between 5 and 24V.The range of operation in automotive field especially for being advantageously applied.
The invention further relates to the lighting devices including at least one circuit device according to the present invention, and including according to this
The headlight for vehicle of the lighting device of invention, especially headlamp for vehicles.
Detailed description of the invention
The present invention is explained in greater detail below according to exemplary and non-limiting embodiment, the embodiment is in attached drawing
In show.Wherein:
Fig. 1 shows the schematic diagram of circuit device according to the present invention.
Specific embodiment
Fig. 1 shows circuit device 1 according to the present invention.The circuit device 1 is arranged for being alternatively switched on and turning off vehicle
The electrically in parallel lamp branches 2 and 3 of at least two of head lamp and including parallel circuit 4 and at least one be used for parallel circuit 4
The energy source 5 of power supply, the parallel circuit have at least two electrically in parallel lamp branches, i.e. the first lamp branch 2 and the second lamp branch
Road 3.First lamp branch 2 has a working range, the working range have for run the lower voltage limit of the first lamp branch with
Upper voltage limit, the lower voltage limit and upper voltage limit pass through the light source 7 that especially may be embodied as LED concatenated in the branch
Lower voltage limit or the sum of upper voltage limit give.
Kindred circumstances is suitable for the second lamp branch 3 in a similar way, wherein the second lamp branch has relative to the first lamp
Branch 2 improve quantity light source, and be accordingly used in operation the second lamp branch 3 lower voltage limit and upper voltage limit be correspondingly higher than
Lower voltage limit and upper voltage limit in first lamp branch 2.Specifically, the quantity and voltage value for selecting light emitting device, so that second
The lower voltage limit of lamp branch 3 is higher than the upper voltage limit of the first lamp branch 2.
First lamp branch 2 is connected with switch element 6, which is arranged for through external switch signal Sext?
Switch between conductive and electricity cut-off state.
Parallel circuit 4 is connect with energy source 5 and/or energy source 5 is designed to, so that under 6 on state of switch element,
It is applied to the voltage Up on parallel circuit 4 to be in the working range of the first lamp branch 2, and thereby turns on the first lamp branch 2
With the second lamp branch 3 of shutdown, and under the nonconducting state of switch element 6, the voltage Up being applied on parallel circuit 4 is improved
To the working range of the second lamp branch 3, and therefore turn off the first lamp branch 2 with connect the second lamp branch 3.For example, first
In lamp branch 2 use five LED light sources when, total forward voltage, i.e. the first lamp branch 2 working range in 13.5 V and 17.5 V
Between (therefore lower voltage limit is 13.5 V herein and therefore upper voltage limit is 17. 5 V), and make in the second lamp branch 3
When with 10 LED light sources, correspondingly (therefore lower voltage limit is herein the working range of the second lamp branch between 27 V and 35V
Therefore 27 V and upper voltage limit are 35 V).If such branch for example powers (constant current source by constant current source
Export the rated current that electric current is equal to a branch), then the connection of switch element 6 causes: carrying out to the voltage of constant current source
Adjustment, so that rated current flows in the first branch 2.Therefore, voltage will be between 13.5 V and 17.5 V, and are no more than
The value, because of rated current INIt has flowed.Only in the case where turning off switch element 6, the switch element just will interrupt with
Thus the connection of first lamp branch 2 improves voltage Up until rated current INFlow through second branch 3.Voltage Up is now second
In the working range of lamp branch 3.
In view of the introduction, those skilled in the art can obtain of the invention other in the case where no creative work
Unshowned embodiment.Therefore, the embodiment the present invention is not limited to shown in.Moreover, of the invention or embodiment each
Aspect can be used and be combined with each other.Essence is ideas based on the present invention, can be existed by those skilled in the art
Implement in various ways in the case where solution this specification and however remains unchanged in itself.Any attached drawing in claim
Label is all exemplary, and reads claim only for being more convenient for, without limitations on claims.
Claims (11)
1. the circuit device (1) for at least two electrically in parallel lamp branches for alternately turning on and off headlight for vehicle, comprising:
Parallel circuit has at least two electrically in parallel lamp branches, wherein each lamp branch routes multiple electrically coupled in series light each other
Source (7) composition,
At least one is used for the energy source (5) powered to the parallel circuit (4),
Wherein the first lamp branch (2) in described at least two electrically in parallel lamp branches (2,3) has a working range, described
Working range has the lower voltage limit and upper voltage limit for running the first lamp branch (2),
And wherein the second lamp branch (3) in described at least two electrically in parallel lamp branches (2,3) has a working range,
The working range has the lower voltage limit and upper voltage limit for running the second lamp branch (3),
Wherein the upper voltage limit of the first lamp branch (2) be lower than the second lamp branch (3) lower voltage limit, wherein the first lamp branch with open
Element (6) series connection is closed,
It is characterized in that, the circuit device (1) is arranged for causing by the presence of the unique switching signal of only one
The transformation of the operation of at least two branch (2,3), mode are that the parallel circuit (4) connect with the energy source (5)
And/or the energy source (5) is designed to, so that
Under the on state of the switch element (6), in response to this, it is applied at the voltage on the parallel circuit (4)
In in the working range of the first lamp branch (2), and the second lamp branch (3) of the first lamp branch (2) and shutdown is thereby turned on, and
Under the not on-state of the switch element (6), in response to this, the voltage being applied on the parallel circuit (4)
Improve to the second lamp branch (3) working range, and therefore turn off the first lamp branch (2) with connect the second lamp branch (3).
2. circuit device (1) according to claim 1, wherein all light sources (7) of the lamp branch are LED.
3. circuit device (1) according to claim 2, wherein the LED of all lamp branches (2,3) is that structure is identical.
4. circuit device (1) according to claim 2 or 3, wherein in the lamp branch (2,3) concatenated LED number
It measures different from each other.
5. circuit device (1) according to claim 2, wherein the concatenated LED in at least two lamps branch (2,3)
Quantity be identical, wherein the forward voltage of the LED of described two lamp branches (2,3) is different from each other.
6. the circuit device according to one of preceding claims (1), wherein the energy source (5) is constant current source.
7. the circuit device according to one of preceding claims (1), wherein the switch element (6) is relay or crystal
Pipe, especially MOSFET or bipolar transistor.
8. the circuit device according to one of preceding claims (1), wherein the switching voltage of the switch element (6) is in 5V
Between 24V.
9. the circuit device according to one of preceding claims (1), wherein being applied to by what the energy source (5) provided
Voltage on the parallel circuit (4) is between 2V and 60V.
10. a kind of lighting device, including at least one circuit device according to one of preceding claims (1).
11. a kind of headlight for vehicle, especially headlamp for vehicles, including lighting device according to claim 10.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18155962.6A EP3525552B1 (en) | 2018-02-09 | 2018-02-09 | Circuit arrangement for switching on and off at least two light strands for a vehicle headlight electrically connected in parallel |
| EP18155962.6 | 2018-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110139421A true CN110139421A (en) | 2019-08-16 |
Family
ID=61192716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910103130.0A Pending CN110139421A (en) | 2018-02-09 | 2019-02-01 | Alternating turns on and off the circuit device of at least two electrically in parallel lamp branches of headlight |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3525552B1 (en) |
| CN (1) | CN110139421A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018437A (en) * | 2007-02-17 | 2007-08-15 | 肖祥柏 | LED lamp component circuit unit and compound serial LED lamp circuit |
| US20130063035A1 (en) * | 2011-09-12 | 2013-03-14 | Juno Manufacturing, LLC | Dimmable led light fixture having adjustable color temperature |
| JP2014157744A (en) * | 2013-02-15 | 2014-08-28 | Panasonic Corp | Light emitting circuit, light emitting module and lighting apparatus |
| CN104113961A (en) * | 2013-04-22 | 2014-10-22 | 欧司朗有限公司 | Drive Control Of Semiconductor Light Emitting Element |
| EP3193564A1 (en) * | 2014-09-08 | 2017-07-19 | Citizen Watch Co., Ltd. | Led drive circuit |
| US20180014368A1 (en) * | 2015-01-13 | 2018-01-11 | Philips Lighting Holding B.V. | Operation of led lighting elements under control with a light sensitive element |
-
2018
- 2018-02-09 EP EP18155962.6A patent/EP3525552B1/en active Active
-
2019
- 2019-02-01 CN CN201910103130.0A patent/CN110139421A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018437A (en) * | 2007-02-17 | 2007-08-15 | 肖祥柏 | LED lamp component circuit unit and compound serial LED lamp circuit |
| US20130063035A1 (en) * | 2011-09-12 | 2013-03-14 | Juno Manufacturing, LLC | Dimmable led light fixture having adjustable color temperature |
| JP2014157744A (en) * | 2013-02-15 | 2014-08-28 | Panasonic Corp | Light emitting circuit, light emitting module and lighting apparatus |
| CN104113961A (en) * | 2013-04-22 | 2014-10-22 | 欧司朗有限公司 | Drive Control Of Semiconductor Light Emitting Element |
| EP3193564A1 (en) * | 2014-09-08 | 2017-07-19 | Citizen Watch Co., Ltd. | Led drive circuit |
| US20180014368A1 (en) * | 2015-01-13 | 2018-01-11 | Philips Lighting Holding B.V. | Operation of led lighting elements under control with a light sensitive element |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3525552B1 (en) | 2023-10-11 |
| EP3525552A1 (en) | 2019-08-14 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190816 |