CN110798950A - Bulb lamp circuit capable of being connected in series and bulb lamp string - Google Patents
Bulb lamp circuit capable of being connected in series and bulb lamp string Download PDFInfo
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- CN110798950A CN110798950A CN201911068871.6A CN201911068871A CN110798950A CN 110798950 A CN110798950 A CN 110798950A CN 201911068871 A CN201911068871 A CN 201911068871A CN 110798950 A CN110798950 A CN 110798950A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S10/00—Lighting devices or systems producing a varying lighting effect
- F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S4/00—Lighting devices or systems using a string or strip of light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A bulb lamp circuit capable of being connected in series is characterized by comprising an external connection interface module, a DMX signal control module and an LED light source module; the external connection interface module comprises a power supply pin, a DMX signal input pin and a DMX signal output pin; the DMX signal control module and the LED light source module are respectively and electrically connected with the external connection interface module; the DMX signal control module is electrically connected with the LED light source module; the DMX signal control module comprises an IC power supply part, a signal control part and an IC protection part, wherein the IC power supply part is electrically connected with the signal control part; the IC protection part is electrically connected with the signal control part; the signal control part includes an LED driving IC.
Description
The invention belongs to the field of decorative lamps, and particularly relates to the field of series-connectable bulb lamp circuits and bulb lamp strings.
Background
The LED bulb lamp is in a bulb shape which is habituated to people and is spherical in appearance, the LED chip is selected as the internal light source, and the LED bulb lamp has the advantages of all LED lamps: 1. energy conservation and environmental protection; 2. the service life is long; 3. no stroboflash and green color. But the application of the LED bulb lamp is limited to single use at present.
The DMX colored lamps beside parks, gardens and streets are all single-pixel power structures, most of the DMX colored lamps adopt SPI control, the anti-interference capability of the SPI control is poor, the influence is easy to occur, and the control mode is relatively single.
The DMX512 protocol was first developed by USITT (american theater technology association) as a way to control dimmers from consoles with standard digital interfaces, and the simplicity, reliability, and flexibility of DMX512 quickly became the protocol of choice when funding was allowed, as evidenced by the growing array of control devices in addition to dimmers. DMX512 is designed around an industry standard EIA-485 interface, and an RS-485 interface adopts a differential mode to transmit signals and does not need to detect the signals relative to a certain reference point. The RS485 has two-wire system and four-wire system connection, the four-wire system can only realize a point-to-point communication mode, the two-wire system connection mode is rarely adopted at present, and the two-wire system connection mode is mostly adopted at present.
How to design a circuit of a single LED bulb lamp adopting a DMX512 protocol so as to connect a plurality of LED bulb lamps in series to manufacture a brand-new DMX bulb lamp string is a problem to be solved by technical personnel in the field.
Disclosure of Invention
The purpose of the invention is realized by the following technical scheme:
a bulb lamp circuit capable of being connected in series is characterized by comprising an external connection interface module, a DMX signal control module and an LED light source module; the external connection interface module comprises a power supply pin, a DMX signal input pin and a DMX signal output pin; the DMX signal control module and the LED light source module are respectively and electrically connected with the external connection interface module; the DMX signal control module is electrically connected with the LED light source module; the DMX signal control module comprises an IC power supply part, a signal control part and an IC protection part, wherein the IC power supply part is electrically connected with the signal control part; the IC protection part is electrically connected with the signal control part; the signal control part includes an LED driving IC.
Further, the number of the power supply pins is 2, and the power supply pins comprise V + and GND; the number of the DMX signal input pins is 2, and the DMX signal input pins are used for receiving DMX signals input from the outside; the number of the DMX signal output pins is 2, and the DMX signal output pins are used for outputting DMX signals to the outside.
Further, the IC power supply portion includes a resistor RV1, a capacitor CC1, a capacitor CC 2: one end of the resistor RV1 is connected with a power supply pin V + ", and the other end is connected with an LED drive IC; one end of the capacitor CC1 is connected with a power supply pin V + and the other end is connected with a power supply pin GND; capacitor CC2 has one end connected to power supply pin "GND" and the other end connected to LED driver IC.
Further, the IC power supply part further includes a zener diode DS2, and the zener diode DS2 is located between the LED driving IC and GND.
Furthermore, the signal control part further comprises a resistor RV2 and a resistor RS1, and two ends of the resistor RS1 are respectively connected with different pins of the LED driving IC; one end of the resistor RV2 is connected with the LED drive IC, and the other end of the resistor RV2 is connected with a power supply pin GND.
Furthermore, the signal control part further comprises a resistor RS2, and two ends of the resistor RS2 are respectively connected with different pins of the LED driving IC.
Furthermore, the signal control part further comprises a resistor RS3, and two ends of the resistor RS3 are respectively connected with different pins of the LED driving IC.
Further, the signal control part further comprises a resistor RP2, wherein one end of the resistor RP2 is connected to the LED driving IC, and the other end is connected to a power supply pin "GND".
Further, the IC protection part comprises fuses F1 and F2 and resistors RP1, RP3, RX1 and RX 2; one end of the resistor RP1 is connected with the LED drive IC, and the other end of the resistor RP1 is connected with the external connection interface module; one end of the resistor RP3 is connected with the LED drive IC, and the other end of the resistor RP3 is connected with the external connection interface module; one end of the resistor RX1 is connected with the LED drive IC, and the other end of the resistor RX1 is connected with one end of a fuse F1; one end of the resistor RX2 is connected with the LED drive IC, and the other end of the resistor RX2 is connected with one end of a fuse F2; the other end of the fuse F1 is connected with the external connection interface module; the other end of the fuse F2 is connected with the external connection interface module.
Furthermore, the IC protection part also comprises a thermistor, and two ends of the thermistor are respectively connected with the 2 DMX signal input pins.
Further, the LED light source module is composed of a red LED light source part, a green LED light source part, a blue LED light source part and a white LED light source part; the red LED light source part comprises 6 red LED light sources and a resistor R4 to form a loop, the green LED light source part comprises 6 green LED light sources and a resistor R1 to form a loop, the blue LED light source part comprises 6 blue LED light sources and a resistor R3 to form a loop, and the white LED light source part comprises 6 white LED light sources and a resistor R2 to form a loop; the 'anode' of the LED light source module is connected with the external connection interface module; the negative electrode of the red LED light source part, the negative electrode of the green LED light source part, the negative electrode of the blue LED light source part and the negative electrode of the white LED light source part are respectively connected with different pins of the LED drive IC.
Further, the LED driving IC is a DMX512 differential cascade IC.
A bulb light string, characterized in that it comprises one or more serially connectable bulb circuits according to any one of claims 1 to 11, the power supply pins of the bulb circuits being connected in parallel with each other; the DMX signal input pin of the first bulb lamp circuit is used for receiving an externally input DMX signal, and the DMX signal output pin of the first bulb lamp circuit is connected in series with the DMX signal input pin of the second bulb lamp circuit; and the DMX signal output pin of the second bulb lamp circuit is connected with the DMX signal input pin of the third bulb lamp circuit in series until the DMX signal output pin of the (N-1) th bulb lamp circuit is connected with the DMX signal input pin of the Nth bulb lamp circuit in series.
Compared with the prior art, the technical scheme has the beneficial effects that:
1-breaking through the constraint that the conventional LED bulb lamp can only be used independently, and using the LED bulb lamp for building and landscape lighting in a string form.
2-power pins of all bulb lamps on the bulb lamp string are connected in parallel, so that the phenomenon that all bulb lamps cannot work normally due to the fact that a certain bulb lamp power supply is damaged is avoided.
3-the circuit is controlled by adopting a DMX512 protocol, so that a common bulb lamp can be controlled together with a professional stage lamp, and meanwhile, the interference problem in the bulb lamp string signal transmission process can be better solved by adopting A/B path DMX signal input and output.
Drawings
Fig. 1 is a schematic diagram of a circuit design.
Fig. 2 is a layout diagram of electronic components.
Fig. 3 is an electrical wiring diagram.
The reference numbers in the figures illustrate: 1-an LED light source module; 10-a bulb lamp; 2-a signal control module; 3-external connection interface module; 4-LED lamp beads; 5-external connection interface; 6-LED driver IC; 7-external input source.
Detailed Description
The innovation point of the invention is further explained below with reference to the drawings and the embodiments.
As shown in fig. 1 and 2, a bulb lamp circuit capable of being connected in series comprises an external connection interface module (3), a signal control module (2) and an LED light source module (1); the external connection interface module (3) comprises a power supply pin, a DMX signal input pin and a DMX signal output pin; the DMX signal control module (2) and the LED light source module (1) are respectively electrically connected with the external connection interface module (3); the DMX signal control module (2) is electrically connected with the LED light source module (1); the DMX signal control module (2) comprises an IC power supply part, a signal control part and an IC protection part, wherein the IC power supply part is electrically connected with the signal control part; the IC protection part is electrically connected with the signal control part; the signal control section includes an LED drive IC (6).
In a preferred embodiment, the number of the power pins is 2, including pin 1 "V +" and pin 6 "GND"; the DMX signal input pins are pin 2 and pin 3 and are used for receiving DMX signals input from the outside; the DMX signal output pins are pin 4 and pin 5, and are used for outputting DMX signals to the outside.
As a preferred embodiment, the IC power supply portion includes a resistor RV1, a capacitor CC1, a capacitor CC 2: one end of the resistor RV1 is connected with a power supply pin 1 'V +', and the other end is connected with a pin 16 of an LED drive IC (6); one end of the capacitor CC1 is connected with a power supply pin 1 'V +', and the other end is connected with a power supply pin 6 'GND'; one end of the capacitor CC2 is connected with a power supply pin 6 'GND', and the other end is connected with an LED drive IC pin 16.
The IC power supply part supplies power to the LED drive IC (6) by using a voltage division circuit, and supplies +5V voltage.
Optionally, the IC power supply part further includes a zener diode DS2, and the zener diode DS2 is located between the LED driver IC pin 16 and the power supply pin 6 "GND" for assisting in stabilizing the power supply voltage.
As a preferred embodiment, the signal control part further comprises a resistor RV2 and a resistor RS1, and two ends of the resistor RS1 are respectively connected with the pin 16 and the pin 15 of the LED driving IC (6); one end of the resistor RV2 is connected with a pin 6 of the LED drive IC (6), and the other end of the resistor RV2 is connected with a power supply pin 6 'GND'.
Optionally, the signal control part further includes a resistor RS2, and two ends of the resistor RS2 are respectively connected to the pin 16 and the pin 14 of the LED driving IC (6), and are used in cooperation with the RS1 to switch the output modes of the LED driving IC, which are respectively 1 field mode, 2 field mode, 3 field mode, and 4 field mode.
Optionally, the signal control part further includes a resistor RS3, two ends of the resistor RS3 are respectively connected to the pin 16 and the pin 13 of the LED driving IC (6), and are used for selecting output polarity, and after the output polarity is connected to the "pin 16" of the LED driving IC (6), the output polarity is opposite, and meanwhile, the port refresh frequency is reduced to 250 HZ.
Optionally, the signal control part further includes a resistor RP2, one end of the resistor RP2 is connected to the pin 10 of the LED driving IC (6), and the other end of the resistor RP2 is connected to the power supply pin 6 "GND", and is used for setting the state of the LED light source RGBW at power-on, suspending RGBW5% gray scale output, and connecting the LED driving IC "16 pin" to be completely black.
As a preferred embodiment, the IC protection portion includes fuses F1, F2 and resistors RP1, RP3, RX1, RX 2; one end of the resistor RP1 is connected with a pin 7 of the LED drive IC (6), and the other end of the resistor RP1 is connected with a pin 5 of the external connection interface module (3); one end of the resistor RP3 is connected with a pin 8 of the LED drive IC (6), and the other end of the resistor RP3 is connected with a DMX signal output pin 4; one end of the resistor RX1 is connected with a pin 12 of an LED drive IC (6), and the other end of the resistor RX1 is connected with one end of a fuse F1; one end of the resistor RX2 is connected with a pin 11 of an LED drive IC (6), and the other end of the resistor RX2 is connected with one end of a fuse F2; the other end of the fuse F1 is connected with a DMX signal input pin 3; the other end of the fuse F2 is connected to the DMX signal input pin 2.
The IC protection part respectively connects a resistor in series to the input end and the output end of the DMX signal to achieve the effect of current limiting, and simultaneously connects a fuse in series to the input end of the DMX signal to prevent the LED drive IC from being burnt out due to overlarge current.
Optionally, the IC protection part further includes a thermistor, and two ends of the thermistor are respectively connected to the DMX signal input pins 2 and 3, and are configured to detect the temperature of the LED driver IC.
As a preferred embodiment, the LED light source module (1) is composed of a red LED light source part, a green LED light source part, a blue LED light source part and a white LED light source part; the red LED light source part comprises 6 red LED light sources and a resistor R4 to form a loop, the green LED light source part comprises 6 green LED light sources and a resistor R1 to form a loop, the blue LED light source part comprises 6 blue LED light sources and a resistor R3 to form a loop, and the white LED light source part comprises 6 white LED light sources and a resistor R2 to form a loop; the anode of the LED light source module is connected with a power supply pin 1V +; the negative pole of the red light LED light source part is connected with a pin 2 of the LED drive IC (6), the negative pole of the green light LED light source part is connected with a pin 3 of the LED drive IC (6), the negative pole of the blue light LED light source part is connected with a pin 4 of the LED drive IC (6), and the negative pole of the white light LED light source part is connected with a pin 5 of the LED drive IC (6).
The red light LED light source part, the green light LED light source part, the blue light LED light source part and the white light LED light source part are controlled by decoding the data signals through the LED driving IC (6), so that the change effect of the colorful bulb lamp under the control of DMX is realized.
Specifically, the LED driver IC (6) is a DMX512 differential cascade IC, the manufacturer is shenzhen synechuan microelectronics ltd, and the DMX512 differential cascade IC fully adaptively decodes DMX512 signals, so as to realize data signal control after lamp cascade.
As shown in fig. 3, a bulb lamp string is characterized by comprising one or more bulb lamp circuits (10) which can be connected in series, wherein power pins 1 and 6 of the plurality of bulb lamp circuits (10) are connected in parallel with each other on power supplies V + and GND of an external input source (7); DMX signal input pins 2 and 3 of the first bulb lamp circuit are used for receiving DMX signals DATA A and DATA B of an external input source (7), and DMX signal output pins 4 and 5 of the first bulb lamp circuit are connected in series with DMX signal input pins 2 and 3 of the second bulb lamp circuit; the DMX signal output pins 4 and 5 of the second bulb lamp circuit are connected in series with the DMX signal input pins 2 and 3 of the third bulb lamp circuit until the DMX signal output pins 4 and 5 of the (N-1) th bulb lamp circuit are connected in series with the DMX signal input pins 2 and 3 of the Nth bulb lamp circuit.
As shown in fig. 2, in practical application, a single bulb lamp is circular, and in order to better match with the structure and practical requirements, preferably, a bulb lamp circuit board is designed to be circular, and the LED light source module (1) is provided with 6 RGBW four-color LED lamp beads (4) which are uniformly and respectively arranged on the periphery, so as to be more transparent; the external connection interface (5) in the external connection interface module (3) is a 6P socket which is arranged in the middle part and is convenient for plugging and unplugging a plug; the LED driving IC (6) is also arranged at the vacant position of the circular circuit board according to reasonable arrangement.
The above examples are only for further illustration of the technical solution of the present invention, and do not limit the protection scope of the present invention. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.
Claims (13)
1. A bulb lamp circuit capable of being connected in series is characterized by comprising an external connection interface module, a DMX signal control module and an LED light source module; the external connection interface module comprises a power supply pin, a DMX signal input pin and a DMX signal output pin; the DMX signal control module and the LED light source module are respectively and electrically connected with the external connection interface module; the DMX signal control module is electrically connected with the LED light source module; the DMX signal control module comprises an IC power supply part, a signal control part and an IC protection part, wherein the IC power supply part is electrically connected with the signal control part; the IC protection part is electrically connected with the signal control part; the signal control part includes an LED driving IC.
2. The series-connectable bulb lamp circuit according to claim 1, wherein the number of the power supply pins is 2, including "V +" and "GND"; the number of the DMX signal input pins is 2, and the DMX signal input pins are used for receiving DMX signals input from the outside; the number of the DMX signal output pins is 2, and the DMX signal output pins are used for outputting DMX signals to the outside.
3. The series-connectable bulb lamp circuit according to claim 1, wherein the IC power supply part comprises a resistor RV1, a capacitor CC1, a capacitor CC 2: one end of the resistor RV1 is connected with a power supply pin V + ", and the other end is connected with an LED drive IC; one end of the capacitor CC1 is connected with a power supply pin V + and the other end is connected with a power supply pin GND; capacitor CC2 has one end connected to power supply pin "GND" and the other end connected to LED driver IC.
4. The series-connectable bulb lamp circuit according to claim 3, wherein the IC power supply part further comprises a voltage regulator diode DS2, and the voltage regulator diode DS2 is located between the LED driver IC and GND.
5. The series-connectable bulb lamp circuit according to claim 1, wherein the signal control part further comprises a resistor RV2 and a resistor RS1, and two ends of the resistor RS1 are respectively connected with different pins of the LED driver IC; one end of the resistor RV2 is connected with the LED drive IC, and the other end of the resistor RV2 is connected with a power supply pin GND.
6. The series-connectable bulb lamp circuit according to claim 5, wherein the signal control part further comprises a resistor RS2, and two ends of the resistor RS2 are respectively connected to different pins of the LED driver IC.
7. The series-connectable bulb lamp circuit according to claim 5, wherein the signal control part further comprises a resistor RS3, and two ends of the resistor RS3 are respectively connected to different pins of the LED driver IC.
8. The series-connectable bulb lamp circuit according to claim 5, wherein the signal control part further comprises a resistor RP2, one end of the resistor RP2 is connected to the LED driver IC, and the other end of the resistor RP2 is connected to a power supply pin "GND".
9. The series-connectable bulb lamp circuit according to claim 1, wherein the IC protection part comprises fuses F1 and F2 and resistors RP1, RP3, RX1 and RX 2; one end of the resistor RP1 is connected with the LED drive IC, and the other end of the resistor RP1 is connected with the external connection interface module; one end of the resistor RP3 is connected with the LED drive IC, and the other end of the resistor RP3 is connected with the external connection interface module; one end of the resistor RX1 is connected with the LED drive IC, and the other end of the resistor RX1 is connected with one end of a fuse F1; one end of the resistor RX2 is connected with the LED drive IC, and the other end of the resistor RX2 is connected with one end of a fuse F2; the other end of the fuse F1 is connected with the external connection interface module; the other end of the fuse F2 is connected with the external connection interface module.
10. The series-connectable bulb lamp circuit according to claim 9, wherein the IC protection part further comprises a thermistor, and two ends of the thermistor are respectively connected to the 2 DMX signal input pins.
11. The series-connectable bulb lamp circuit according to claim 1, wherein the LED light source module is composed of a red LED light source part, a green LED light source part, a blue LED light source part and a white LED light source part; the red LED light source part comprises 6 red LED light sources and a resistor R4 to form a loop, the green LED light source part comprises 6 green LED light sources and a resistor R1 to form a loop, the blue LED light source part comprises 6 blue LED light sources and a resistor R3 to form a loop, and the white LED light source part comprises 6 white LED light sources and a resistor R2 to form a loop; the 'anode' of the LED light source module is connected with the external connection interface module; the negative electrode of the red LED light source part, the negative electrode of the green LED light source part, the negative electrode of the blue LED light source part and the negative electrode of the white LED light source part are respectively connected with different pins of the LED drive IC.
12. The series-connectable bulb lamp circuit according to claim 1, wherein the LED driver IC is a DMX512 differential cascade IC.
13. A bulb light string, characterized in that it comprises one or more serially connectable bulb circuits according to any one of claims 1 to 11, the power supply pins of the bulb circuits being connected in parallel with each other; the DMX signal input pin of the first bulb lamp circuit is used for receiving an externally input DMX signal, and the DMX signal output pin of the first bulb lamp circuit is connected in series with the DMX signal input pin of the second bulb lamp circuit; and the DMX signal output pin of the second bulb lamp circuit is connected with the DMX signal input pin of the third bulb lamp circuit in series until the DMX signal output pin of the (N-1) th bulb lamp circuit is connected with the DMX signal input pin of the Nth bulb lamp circuit in series.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910699891 | 2019-07-31 | ||
| CN2019106998917 | 2019-07-31 | ||
| CN2019212232436 | 2019-07-31 | ||
| CN201921223243 | 2019-07-31 |
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| CN110798950A true CN110798950A (en) | 2020-02-14 |
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| CN201921886827.1U Active CN211047302U (en) | 2019-07-31 | 2019-11-05 | Bulb lamp circuit capable of being connected in series and bulb lamp string |
| CN201911068871.6A Pending CN110798950A (en) | 2019-07-31 | 2019-11-05 | Bulb lamp circuit capable of being connected in series and bulb lamp string |
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| CN201921886827.1U Active CN211047302U (en) | 2019-07-31 | 2019-11-05 | Bulb lamp circuit capable of being connected in series and bulb lamp string |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4345365A1 (en) * | 2022-09-30 | 2024-04-03 | Spacecannon Sne S.r.l. | Led lamp and associated network |
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2019
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- 2019-11-05 CN CN201911068871.6A patent/CN110798950A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4345365A1 (en) * | 2022-09-30 | 2024-04-03 | Spacecannon Sne S.r.l. | Led lamp and associated network |
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