CN201383890Y - Front LED lamp circuit for electric bicycle - Google Patents
Front LED lamp circuit for electric bicycle Download PDFInfo
- Publication number
- CN201383890Y CN201383890Y CN200920039668U CN200920039668U CN201383890Y CN 201383890 Y CN201383890 Y CN 201383890Y CN 200920039668 U CN200920039668 U CN 200920039668U CN 200920039668 U CN200920039668 U CN 200920039668U CN 201383890 Y CN201383890 Y CN 201383890Y
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- led lamp
- resistance
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- parallel
- voltage stabilizing
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Abstract
The utility model discloses a front LED lamp circuit used for an electric bicycle. The circuit comprises three rows of LED lamp banks formed from a plurality of LED lamps connected in series in sequence, a first parallel circuit and a second parallel circuit comprising resistors and diodes, and a constant-current triode A and a constant-current triode B, wherein the first row and second row of the LED lamp banks are connected with the positive pole of a DC 48 V power supply after being connected with a diode in series to be served as a dipped headlight; and the DC 48 V power supply is connected with the three rows of the LED lamp banks in parallel to be served as a high beam lamp. In the utility model, constant current can be outputted within a wide voltage range by only adding two constant-current triodes in the front LED lamp circuit in the prior electric bicycle, high dynamic impedance is provided, current passing through each LED lamp is ensured to be constantly stabilized within the range of 16 to 20 mA, the brightness of the front LED lamp can reach 355 candela, thereby greatly prolonging the service life of the LED lamp, and meeting the requirement for use of the front LED lamp on electric bicycles.
Description
Technical field
The utility model relates to a kind of car light circuit, and especially a kind of circuit of LED electric motor car headlight belongs to the Vehicular lamp technical field.
Background technology
In recent years, electric bicycle still is that the rural area is all developed very soon in the city as a kind of laborsaving inexpensive short distance walking-replacing tool, and when riding electric bicycle night, the illuminating effect of its headlight is to ensureing that driving safety has played important effect.Advantages such as LED lamp (light-emitting diode) is big than incandescent lamp economize on electricity 80%, brightness with it as a kind of advanced person's cold light source, good stability, response time short (nanosecond), environmental protection begin to obtain application more and more widely in all kinds of lightings, the headlight of electric bicycle also brings into use the LED lamp as its lighting source.Circuit for lamp as shown in Figure 1 before the existing electric bicycle LED, comprise that two rows are respectively by a plurality of LED lamp 21 LED lamp groups 2 of joining and forming in sequential series, the serial connection of being separated by in the middle of each LED lamp group divider resistance 22, the negative pole of the parallel connected end serial connection diode A1 of first, second row LED lamp group 2 positive poles, the positive pole of diode A1 connects DC power supply DC48V positive source; The negative pole parallel connected end of the LED lamp 21 of DC48V dc power anode the 3rd row LED lamp group then in parallel again 3, three row LED lamp groups 2,3 is by diode B4 energize negative pole.Dial when " dipped headlights " first, second row LED lamp group 2 of DC48V power connection when selecting switch; Dial when " high beam " the whole three row LED lamps of DC48V power connection when selecting switch.Circuit for lamp exists following defective before this LED: because the direct voltage shakiness of electric motor car output, overtension then influences useful life of LED headlight; Brownout, then light is too dark, influences the result of use of LED headlight.
The utility model content
In order to improve the result of use of electric bicycle LED headlight, increase the service life, the utility model provides that a kind of brightness is big, the electric bicycle LED headlight of long service life.
The utility model is achieved by the following technical programs:
Circuit for lamp before a kind of LED of electric bicycle, comprise that number row is respectively by a plurality of LED lamp 21 LED lamp groups of joining and forming in sequential series, serial connection divider resistance 22 in described each LED lamp group, connect the DC48V positive source after the positive pole of first, second row LED lamp group parallel connected end is connected in series diode A1, connect the DC48V positive source after the 3rd row LED lamp group 3 and first, second row LED lamp group are in parallel; Also be provided with first, second parallel circuits 2 and two constant current triode A8, B9 in the described circuit, described first, second parallel circuits 6,7 is formed by resistance C61 and voltage stabilizing didoe C62, resistance D71 and voltage stabilizing didoe D72 serial connection respectively; Wherein the end span of the resistance C61 of first parallel circuits 6 connects the LED lamp 21 anodal parallel connected end of two row LED lamp groups, connects power supply DC48V negative pole behind the positive pole of the positive terminal cross-over connection diode B4 of voltage stabilizing didoe C62; The end of the resistance D71 of second parallel circuits is anodal in parallel with the 3rd row LED lamp group LED lamp 21, and the positive pole of voltage stabilizing didoe D72 is in parallel with resistance B10; The negative pole parallel connected end of first, second row LED lamp group LED lamp 21 links to each other with the collector electrode of constant current triode B9 with the negative pole of the collector electrode of constant current triode A8, the 3rd row LED lamp group LED lamp 21; The emitter of constant current triode A8, constant current triode B9 links to each other with the positive pole of diode B4 respectively behind series resistor A5, the resistance B10 respectively again, connects the DC48V power cathode behind the cathode connecting diode B4 of the positive pole of the other end of resistance A5, voltage stabilizing didoe C62, the other end of resistance B10, voltage stabilizing didoe D72; The base stage of constant current triode A8, constant current triode B9 is connected on respectively on the link of negative pole of negative pole, resistance D71 and voltage stabilizing didoe D72 of resistance C61 and voltage stabilizing didoe C62; The negative pole of diode E11 links to each other with the anodal parallel connected end of first, second row LED lamp group, and the positive pole of diode E11 connects the DC48V positive source.
The purpose of this utility model can also further realize by following technical measures.
Circuit for lamp before the aforesaid electric bicycle LED, the resistance of wherein said each resistance is 460～480 Ω; The electric current that passes through of described each LED lamp is 18～20mA.
The utility model is simple in structure, only before the LED of existing electric bicycle, increase by 2 constant current triodes in the circuit for lamp, just can in very wide voltage, export constant electric current, has very high motional impedance, make the current constant that passes through each LED lamp in 18～20mA scope, the brightness of LED headlight can reach 355 candelas, has prolonged the useful life of LED lamp greatly, satisfies the instructions for use of the LED headlight of electric bicycle.
Advantage of the present utility model and characteristics will illustrate by the non-limitative illustration of following preferred embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is a circuit for lamp before the existing electric bicycle LED;
Fig. 2 is a circuit for lamp before the electric bicycle LED of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 2, the utility model comprises that two rows are respectively by 12 LED lamps, the 21 LED lamp groups 2 of joining and forming in sequential series, after arranging LED lamp groups 3 and first, second row LED lamp group is in parallel, the serial connection of being separated by in the middle of each LED lamp group 2 divider resistance 22, the three connects the DC48V positive source; Be provided with first parallel circuits 6, second parallel circuits, 7, the first parallel circuitss 6 in the circuit and formed by resistance C61 and voltage stabilizing didoe C62 serial connection, second parallel circuits 7 is formed by resistance D71 and voltage stabilizing didoe D72 serial connection; Wherein the end span of the resistance C61 of first parallel circuits 6 connects the LED lamp 21 anodal parallel connected end of first, second row LED lamp group, connects power cathode behind the positive pole of the positive terminal cross-over connection diode B4 of diode C62; The end of the resistance D71 of second parallel circuits 7 connects the DC48V positive source with the 3rd row LED lamp group LED lamp after 21 anodal linking to each other; The LED lamp 21 negative pole parallel connected end of first, second row LED lamp group 2 link to each other with the collector electrode of constant current triode B9 with LED lamp 21 negative poles of the collector electrode of constant current triode A8, the 3rd row LED lamp group 3; The emitter of constant current triode A8, constant current triode B9 links to each other with the positive pole of diode B4 respectively behind series resistor A5, the resistance B10 respectively again, and the negative pole of the negative pole of the other end of resistance A5, diode B4, the other end of resistance B10, voltage stabilizing didoe C62 connects power cathode; The base stage of constant current triode A8, constant current triode B9 is connected on respectively on the link of negative pole of negative pole, resistance D71 and voltage stabilizing didoe D72 of resistance C61 and voltage stabilizing didoe C62; The negative pole of diode E11 links to each other with the positive pole of first, second row LED lamp group 2 parallel connected end, and the positive pole of diode E11 connects the DC48V positive pole.
During the in parallel connection with DC48V of first, second row's LED lamp group 2 of the present utility model, two arrange LED lamp groups lights the dipped headlights use that can be used as the electric bicycle headlight; When first, second row LED lamp group 2 and the 3rd row LED lamp group 3 in parallel connections, three row LED lamp groups are lighted the high beam that can be used as the electric bicycle headlight and are used.The resistance of each resistance of present embodiment is 470 Ω; The electric current that passes through of each LED lamp 21 is 18mA, has prolonged the useful life of LED lamp, satisfies the instructions for use of the LED headlight of electric motor car, and the utility model also can be used for the headlight of motorcycle or the illuminating lamp of other vehicles.
In addition to the implementation, the utility model can also have other execution modes, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of the utility model requirement.
Claims (3)
1. circuit for lamp before the LED of an electric bicycle, comprise that number row is respectively by a plurality of LED lamps (21) LED lamp group of joining and forming in sequential series, be connected in series divider resistance (22) in described each LED lamp group, connect the DC48V positive source after the positive pole of first, second row LED lamp group parallel connected end is connected in series diode A (1), connect the DC48V positive source after the 3rd row's LED lamp group (3) and first, second row LED lamp group are in parallel; It is characterized in that: also be provided with first, second parallel circuits (2) and two constant current triode A (8), B (9) in the described circuit, described first, second parallel circuits (6), (7) are formed by resistance C (61) and voltage stabilizing didoe C (62), resistance D (71) and voltage stabilizing didoe D (72) serial connection respectively; Wherein the end span of the resistance C (61) of first parallel circuits (6) connects the anodal parallel connected end of LED lamp (21) of two row LED lamp groups, connects power supply DC48V negative pole behind the positive pole of the positive terminal cross-over connection diode B (4) of voltage stabilizing didoe C (62); The end of the resistance D (71) of second parallel circuits is anodal in parallel with the 3rd row's LED lamp group LED lamp (21), and the positive pole of voltage stabilizing didoe D (72) is in parallel with resistance B (10); The negative pole parallel connected end of first, second row's LED lamp group LED lamp (21) links to each other with the collector electrode of constant current triode B (9) with the negative pole of the collector electrode of constant current triode A (8), the 3rd row's LED lamp group LED lamp (21); The emitter of constant current triode A (8), constant current triode B (9) links to each other with the positive pole of diode B (4) respectively behind series resistor A (5), the resistance B (10) respectively again, connects the DC48V power cathode behind the cathode connecting diode B (4) of the positive pole of the other end of resistance A (5), voltage stabilizing didoe C (62), the other end of resistance B (10), voltage stabilizing didoe D (72); The base stage of constant current triode A (8), constant current triode B (9) is connected on respectively on the link of negative pole of negative pole, resistance D (71) and voltage stabilizing didoe D (72) of resistance C (61) and voltage stabilizing didoe C (62); The negative pole of diode E (11) links to each other with the anodal parallel connected end of first, second row LED lamp group, and the positive pole of diode E (11) connects the DC48V positive source.
2. circuit for lamp before the LED of electric bicycle as claimed in claim 1, it is characterized in that: the resistance of described each resistance is 460～480 Ω.
3. circuit for lamp before the LED of electric bicycle as claimed in claim 1, it is characterized in that: the electric current that passes through of described each LED lamp is 16～20mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920039668U CN201383890Y (en) | 2009-04-16 | 2009-04-16 | Front LED lamp circuit for electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920039668U CN201383890Y (en) | 2009-04-16 | 2009-04-16 | Front LED lamp circuit for electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201383890Y true CN201383890Y (en) | 2010-01-13 |
Family
ID=41527361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920039668U Expired - Fee Related CN201383890Y (en) | 2009-04-16 | 2009-04-16 | Front LED lamp circuit for electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201383890Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943964A (en) * | 2012-10-11 | 2013-02-27 | 京东方科技集团股份有限公司 | LED (Light Emitting Diode) lamp tube |
| CN109058799A (en) * | 2018-10-25 | 2018-12-21 | 深圳市虹晟源光电科技有限公司 | A kind of LED light bar |
-
2009
- 2009-04-16 CN CN200920039668U patent/CN201383890Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943964A (en) * | 2012-10-11 | 2013-02-27 | 京东方科技集团股份有限公司 | LED (Light Emitting Diode) lamp tube |
| CN109058799A (en) * | 2018-10-25 | 2018-12-21 | 深圳市虹晟源光电科技有限公司 | A kind of LED light bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20120416 |