CN217770428U - Anti-interference lamp belt control circuit, controller and lighting system - Google Patents
Anti-interference lamp belt control circuit, controller and lighting system Download PDFInfo
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- CN217770428U CN217770428U CN202221197668.6U CN202221197668U CN217770428U CN 217770428 U CN217770428 U CN 217770428U CN 202221197668 U CN202221197668 U CN 202221197668U CN 217770428 U CN217770428 U CN 217770428U
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- 238000002955 isolation Methods 0.000 claims abstract description 41
- 238000007493 shaping process Methods 0.000 claims abstract description 39
- 238000005286 illumination Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005693 optoelectronics Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses an anti-interference lamp area control circuit, controller and lighting system, one of them anti-interference lamp area control circuit includes: the isolation unit is provided with a signal input end and a signal output end, and the signal input end can acquire a control signal; the shaping unit is connected with the signal output end; the driving unit is connected with the shaping unit and can be connected with an external lamp band. The signal input end of the isolation unit receives the TTL control signal, and the isolation unit isolates the surge peak component generated by interference in the TTL control signal. And the shaping unit acquires the TTL control signal subjected to the isolation processing to carry out shaping processing, and reshapes the TTL control signal subjected to the waveform distortion caused by the interference into a standard TTL control signal. Keep apart the isolation of unit, the surge peak that can prevent to disturb the production directly causes the damage to the lamp area, improves the security, and simultaneously, the plastic effect of plastic unit can prevent that wave form distortion from reducing the probability that control is unusual appears in the lamp area, improves the reliability.
Description
Technical Field
The utility model relates to a lamp area field, in particular to anti-interference lamp area control circuit, controller and lighting system.
Background
The lamp strip has the advantages of high luminous efficiency, convenient installation and use and the like, so that the lamp strip is widely used in the fields of household illumination, outdoor illumination, decorative illumination and the like. The light emitting color of part of the lamp strip can be changed to meet the requirements of different use scenes or individualized illumination, in order to realize the effect of adjusting the light emitting color, a controller is required to be equipped, and the controller drives the lamp strip to change the light emitting color according to the received TTL control signal.
The TTL control signal that current controller generally directly received is enlargied and is handled the back and transmit to the lamp area and drive, however, in the in-service use environment, because the interference of factors such as outside forceful electric power, radio frequency electromagnetic wave, TTL control signal's waveform receives the interference easily and leads to the waveform distortion, and then leads to the lamp area to appear controlling unusual problem to the surge peak that the interference produced can cause the impact damage to the lamp area, and the reliability is lower.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an anti-interference lamp area control circuit, its surge peak that can prevent to disturb the production directly causes the damage to the lamp area to can alleviate the influence of interference to signal waveform.
The utility model discloses still provide controller and lighting system, it can protect the surge peak that the lamp area prevented directly to be disturbed the production and damage to reduce the unusual probability of control appear in the lamp area.
According to the utility model discloses anti-interference lamp area control circuit of first aspect embodiment, include: the isolation unit is provided with a signal input end and a signal output end, and the signal input end can acquire a control signal; the shaping unit is connected with the signal output end; and the driving unit is connected with the shaping unit and can be connected with an external lamp belt.
According to the utility model discloses anti-interference lamp area control circuit has following beneficial effect at least: the signal input end of the isolation unit receives the TTL control signal, the isolation unit isolates the surge peak component generated by interference in the TTL control signal, and the surge peak generated by the interference is prevented from being directly output to the lamp strip to cause damage. The shaping unit acquires the isolated TTL control signal from the signal output end of the isolation unit to carry out shaping processing so as to reshape the TTL control signal subjected to waveform distortion caused by interference into a standard TTL control signal, and the shaped control signal is transmitted to the driving unit to be enhanced so as to drive the lamp strip to work. With this, through the isolation of isolation unit, can prevent that the surge peak that the interference produced directly causes the damage to the lamp area, improves the security, and simultaneously, the plastic effect of plastic unit can prevent that wave form distortion from reducing the lamp area and appearing the unusual probability of control, is favorable to improving the reliability.
According to the utility model discloses a some embodiments, keep apart the unit and include optoelectronic coupler, optoelectronic coupler's light emitting component with signal input part connects, optoelectronic coupler's light receiving component with signal output part connects.
According to some embodiments of the present invention, the shaping unit includes a schmitt trigger, an input of the schmitt trigger is connected to the signal output part, an output of the schmitt trigger is connected to the driving unit.
According to some embodiments of the utility model, the drive unit includes the tri-state driver, the plastic unit with the input of tri-state driver is connected, the output of tri-state driver can be connected with outside lamp area.
According to some embodiments of the utility model, the shaping unit includes two at least schmitt triggers, the tristate driver with schmitt trigger one-to-one, whole schmitt trigger's input all with signal output part connects, schmitt trigger's output with the input one-to-one of tristate driver connects.
According to some embodiments of the present invention, the driving unit further comprises an enable terminal, and the tri-state driver comprises an and gate, an or gate, a not gate, an N-type switch tube, and a P-type switch tube; the output end of the Schmitt trigger is respectively connected with the first input end of the AND gate and the first input end of the OR gate; the enable end is connected with the second input end of the AND gate, and the enable end is connected with the second input end of the OR gate through the NOT gate; the output end of the AND gate is connected with the control end of the N-type switch tube, and the output end of the OR gate is connected with the control end of the P-type switch tube; one end of the N-type switch tube is connected with the power supply end, the other end of the N-type switch tube is connected with one end of the P-type switch tube and the external lamp strip, and the other end of the P-type switch tube is grounded.
According to the utility model discloses controller of second aspect embodiment, which comprises a housin, the casing is provided with foretell anti-interference lamp area control circuit, the casing is provided with signal reception port and drive port, signal input part with signal reception port connects, drive unit with drive port connects.
According to the utility model discloses controller has following beneficial effect at least: the signal receiving port receives the TTL control signal, the signal input end of the isolation unit acquires the TTL control signal, and the surge peak component generated due to interference in the TTL control signal is isolated, so that the surge peak generated due to interference is prevented from being directly output. The shaping unit acquires the isolated TTL control signal from the signal output end of the isolation unit to carry out shaping processing so as to reshape the TTL control signal subjected to waveform distortion caused by interference into a standard TTL control signal, the shaped control signal is transmitted to the driving unit to be enhanced, and the enhanced TTL control signal is transmitted to the driving port so as to be output to the lamp strip to drive the lamp strip to work. Through the isolation effect of isolation unit, the surge peak that can prevent to disturb the production directly causes the damage to the lamp area, improves the security, and simultaneously, the plastic effect of plastic unit can prevent that wave form distortion from reducing the lamp area and appearing the unusual probability of control, is favorable to improving the reliability.
According to a third aspect of the present invention, a lighting system includes the above-mentioned controller and at least one light strip, and the driving port is electrically connected to the light strip.
According to the utility model discloses lighting system has following beneficial effect at least: the controller receives the TTL control signal, and after the isolation processing of the isolation unit, the shaping processing of the shaping unit and the enhancement processing of the driving unit, the TTL control signal is transmitted to the lamp strip through the driving port, and the TTL control signal can drive the lamp strip to work in a PWM (pulse width modulation) signal mode. Through the isolation effect of isolation unit, the surge peak that can prevent to disturb the production directly causes the damage to the lamp area, improves the security, and simultaneously, the plastic effect of plastic unit can prevent that wave form distortion from reducing the lamp area and appearing the unusual probability of control, is favorable to improving the reliability.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a circuit diagram of a signal receiving port, a power supply module and an isolation unit according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a shaping unit according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a driving unit and a driving port according to one embodiment of the present invention;
fig. 4 is a circuit diagram of a tri-state driver according to one embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
As shown in fig. 1 to fig. 3, according to the utility model discloses an anti-interference lamp area control circuit, include: an isolation unit 100, provided with a signal input end 101 and a signal output end 102, wherein the signal input end 101 can obtain a control signal; a shaping unit 200 connected to the signal output terminal 102; and a driving unit 300 connected with the shaping unit 200, wherein the driving unit 300 can be connected with an external lamp strip.
The signal input end 101 of the isolation unit 100 receives the TTL control signal, and the isolation unit 100 isolates a surge spike component generated by interference in the TTL control signal, so that the surge spike generated by the interference is prevented from being directly output to the lamp strip to cause damage. The shaping unit 200 obtains the isolated TTL control signal from the signal output end 102 of the isolation unit 100 to perform shaping processing, so as to reshape the TTL control signal subjected to waveform distortion caused by interference into a standard TTL control signal, and the shaped control signal is transmitted to the driving unit 300 to perform enhancement processing, so as to drive the lamp strip to work. With this, through the isolation of isolation unit 100, can prevent that the surge peak that the interference produced from directly causing the damage to the lamp area, improve the security, simultaneously, shaping unit 200's plastic effect can prevent that wave form distortion from reducing the lamp area and appearing the unusual probability of control, is favorable to improving the reliability.
Referring to fig. 1, in some embodiments of the present invention, the isolation unit 100 includes a photocoupler 110, a light emitting part of the photocoupler 110 is connected to the signal input terminal 101, and a light receiving part of the photocoupler 110 is connected to the signal output terminal 102.
The signal input terminal 101 generally includes a signal line Din and a ground GND, and a voltage difference between the signal line Din and the ground GND is a TTL control signal. The signal line Din and the ground line GND are respectively connected with an anode and a cathode of a light emitting part of the photoelectric coupler 110, the light emitting part of the photoelectric coupler 110 emits light according to the TTL control signal waveform, and a light receiving part of the photoelectric coupler 110 is turned on or off according to the received light to generate a corresponding electric signal, namely, the isolated TTL control signal. Because the external interference is generally common mode interference, the voltage fluctuation of the signal line Din and the ground line GND caused by the interference is consistent, that is, the voltage difference between the signal line Din and the ground line GND can be considered as constant, the light emitting part of the photoelectric coupler 110 emits light according to the voltage difference between the signal line and the ground line, the common mode interference can be isolated, and meanwhile, the light emitting part and the light receiving part of the photoelectric coupler 110 are isolated photoelectrically, so that the influence of the interference on the signal output end 102 can be further reduced. With this, can realize preventing that the surge peak that the interference produced directly causes the effect of damage to the lamp area, simple structure is convenient for implement.
In some embodiments, the isolation unit 100 may also be an embodiment including a magnetic isolator, which can suppress the surge spike generated by the interference through the magnetic coupling isolation effect to prevent the damage to the lamp strip.
Referring to fig. 2, in some embodiments of the present invention, the shaping unit 200 includes a schmitt trigger 210, an input of the schmitt trigger 210 is connected to the signal output terminal 102, and an output of the schmitt trigger 210 is connected to the driving unit 300.
By utilizing the characteristic that the forward mutation threshold value and the reverse mutation threshold value of the Schmitt trigger 210 are not equal, the TTL control signal subjected to isolation processing can be shaped to eliminate waveform distortion caused by interference, so that the shaped TTL control signal is a standard TTL control signal, the lamp strip can be driven to work accurately in the follow-up process, and the probability of controlling one field of the lamp strip is reduced. The Schmitt trigger 210 is adopted to realize the shaping effect, and the device has a simple structure and is convenient to implement.
In some embodiments, the shaping unit 200 may also be an embodiment including a voltage comparator, and the TTL control signal after the isolation processing is compared with a reference voltage, and a high/low level is output according to the comparison result, so as to achieve the effect of shaping the TTL control signal.
Referring to fig. 3, in some embodiments of the present invention, the driving unit 300 includes a tri-state driver 310, the shaping unit 200 is connected to an input terminal of the tri-state driver 310, and an output terminal of the tri-state driver 310 can be connected to an external light strip.
The TTL control signal after shaping is transmitted to the tri-state driver 310, and the lamp strip can be driven to work after the tri-state driver 310 is enhanced, so that the effect of enhanced driving is realized, the structure is simple, and the implementation is convenient.
Through the control end level of controlling tristate driver 310, can make tristate driver 310 be in normal condition or high resistance state, under normal condition, the output can normally output high level, low level in order to order about lamp area work, and under the high resistance state, the output is the high resistance state, stops to order about lamp area work, can satisfy different control user demands.
Referring to fig. 2 and 3, in some embodiments of the present invention, the shaping unit 200 includes at least two schmitt triggers 210, the tri-state drivers 310 are in one-to-one correspondence with the schmitt triggers 210, the input terminals of all the schmitt triggers 210 are connected to the signal output terminal 102, and the output terminals of the schmitt triggers 210 are connected to the input terminals of the tri-state drivers 310 in one-to-one correspondence.
Through being provided with a plurality of schmitt triggers 210 and the three state driver 310 of one-to-one correspondence, can order about many lamp areas work simultaneously, realize taking one to be multi-functional, be favorable to satisfying the demand under the different use scenes.
In some embodiments of the present invention, the shaping unit 200 may be an implementation including a 74HC14D chip.
Referring to fig. 3 and 4, in some embodiments of the present invention, the driving unit 300 further includes an enable terminal 301, and the tri-state driver 310 includes an and gate, an or gate, a not gate, an N-type switch tube, and a P-type switch tube; the output end of the schmitt trigger 210 is respectively connected with the first input end of the and gate and the first input end of the or gate; the enable terminal 301 is connected with a second input terminal of the and gate, and the enable terminal 301 is connected with a second input terminal of the or gate through the not gate; the output end of the AND gate is connected with the control end of the N-type switch tube, and the output end of the OR gate is connected with the control end of the P-type switch tube; one end of the N-type switch tube is connected with the power supply end, the other end of the N-type switch tube is connected with one end of the P-type switch tube and the external lamp strip, and the other end of the P-type switch tube is grounded.
The first input end and the second input end of the AND gate are respectively connected with the output end of the Schmitt trigger 210 and the enabling end 301, the output end of the AND gate is connected with the control end of the N-type switch tube, meanwhile, the first input end of the OR gate is connected with the output end of the Schmitt trigger 210, the enabling end 301 is connected with the second input end of the OR gate through the NOT gate, the output end of the OR gate is connected with the control end of the P-type switch tube, and the N-type switch tube and the P-type switch tube form a push-pull circuit. Under the condition that the enable end 301 is at a low level, the AND gate outputs a low level, the N-type switch tube is cut off, the OR gate outputs a high level, the P-type switch tube is cut off, and the output of the push-pull circuit is in a high-impedance state; under the condition that the enable end 301 is at a high level, when the schmitt trigger 210 outputs a high level, the and gate outputs a high level, the N-type switch tube is turned on, the or gate outputs a high level, the P-type switch tube is turned off, and the push-pull circuit outputs a high level; when the enable terminal 301 is at a high level and the output of the schmitt trigger 210 is at a low level, the and gate outputs a low level, the N-type switch tube is turned off, the or gate outputs a low level, the P-type switch tube is turned on, and the push-pull circuit outputs a low level. With this structure, the function of the tri-state driver 310 is realized, and the structure is simple and easy to implement.
In some embodiments of the present invention, the driving unit 300 may be an implementation including a 74HC245C chip.
Referring to fig. 1 to 3, a controller according to an embodiment of the second aspect of the present invention includes a housing, the housing is provided with the above-mentioned anti-interference lamp strip control circuit, the housing is provided with a signal receiving port 400 and a driving port 500, the signal input end 101 is connected with the signal receiving port 400, and the driving unit 300 is connected with the driving port 500.
The signal receiving port 400 receives the TTL control signal, and the signal input terminal 101 of the isolation unit 100 obtains the TTL control signal, isolates a surge spike component generated by interference in the TTL control signal, so as to prevent the surge spike generated by interference from being directly output. The shaping unit 200 obtains the isolated TTL control signal from the signal output end 102 of the isolation unit 100 to perform shaping processing, so as to reshape the TTL control signal subjected to waveform distortion caused by interference into a standard TTL control signal, transmit the shaped control signal to the driving unit 300 to perform enhancement processing, and transmit the enhanced TTL control signal to the driving port 500 to be output to the lamp strip to drive the lamp strip to operate. Through the isolation effect of isolation unit 100, can prevent that the surge peak that the interference produced from directly causing the damage to the lamp area, improve the security, simultaneously, shaping unit 200's plastic effect can prevent that wave form distortion from reducing the lamp area and appearing the unusual probability of control, is favorable to improving the reliability.
According to a second aspect embodiment of the present invention, the lighting system includes the above-mentioned controller and at least one light strip, and the driving port 500 is electrically connected to the light strip.
The controller receives the TTL control signal, and after the isolation processing of the isolation unit 100, the shaping processing of the shaping unit 200, and the enhancement processing of the driving unit 300, the TTL control signal is transmitted to the lamp strip through the driving port 500, and the TTL control signal can drive the lamp strip to operate in a PWM signal manner. Through the isolation of isolation unit 100, can prevent that the surge peak that the interference produced from directly causing the damage to the lamp area, improve the security, simultaneously, shaping unit 200's plastic effect can prevent that wave form distortion from reducing the probability that control is unusual appears in the lamp area, is favorable to improving the reliability.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (8)
1. An anti-jamming light strip control circuit, comprising:
the isolation unit (100) is provided with a signal input end (101) and a signal output end (102), wherein the signal input end (101) can obtain a control signal;
a shaping unit (200) connected to the signal output (102);
a driving unit (300) connected with the shaping unit (200), the driving unit (300) being connectable with an external light strip.
2. A tamper resistant light strip control circuit as claimed in claim 1, wherein: the isolation unit (100) comprises a photoelectric coupler (110), a light emitting part of the photoelectric coupler (110) is connected with the signal input end (101), and a light receiving part of the photoelectric coupler (110) is connected with the signal output end (102).
3. A tamper resistant light strip control circuit as claimed in claim 1, wherein: the shaping unit (200) comprises a Schmitt trigger (210), the input end of the Schmitt trigger (210) is connected with the signal output end (102), and the output end of the Schmitt trigger (210) is connected with the driving unit (300).
4. A tamper resistant light strip control circuit as claimed in claim 3, wherein: the driving unit (300) comprises a tri-state driver (310), the shaping unit (200) is connected with an input end of the tri-state driver (310), and an output end of the tri-state driver (310) can be connected with an external light strip.
5. A tamper resistant light strip control circuit as claimed in claim 4, wherein: the shaping unit (200) comprises at least two Schmitt triggers (210), the three-state drivers (310) correspond to the Schmitt triggers (210) one by one, the input ends of all the Schmitt triggers (210) are connected with the signal output end (102), and the output ends of the Schmitt triggers (210) are connected with the input ends of the three-state drivers (310) in one-to-one correspondence.
6. A tamper resistant light strip control circuit as claimed in claim 4, wherein: the driving unit (300) further comprises an enabling end (301), and the tri-state driver (310) comprises an AND gate, an OR gate, a NOT gate, an N-type switching tube and a P-type switching tube;
the output end of the Schmitt trigger (210) is respectively connected with the first input end of the AND gate and the first input end of the OR gate;
the enabling end (301) is connected with a second input end of the AND gate, and the enabling end (301) is connected with a second input end of the OR gate through the NOT gate;
the output end of the AND gate is connected with the control end of the N-type switch tube, and the output end of the OR gate is connected with the control end of the P-type switch tube;
one end of the N-type switch tube is connected with the power supply end, the other end of the N-type switch tube is connected with one end of the P-type switch tube and the external lamp strip, and the other end of the P-type switch tube is grounded.
7. A controller, characterized by: a tamper resistant light strip control circuit according to any one of claims 1 to 6 comprising a housing provided with a signal receiving port (400) and a drive port (500), the signal input (101) being connected to the signal receiving port (400), the drive unit (300) being connected to the drive port (500).
8. An illumination system, characterized by: comprising the controller of claim 7 and at least one light strip, said drive port (500) being electrically connected to said light strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221197668.6U CN217770428U (en) | 2022-05-18 | 2022-05-18 | Anti-interference lamp belt control circuit, controller and lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221197668.6U CN217770428U (en) | 2022-05-18 | 2022-05-18 | Anti-interference lamp belt control circuit, controller and lighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217770428U true CN217770428U (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221197668.6U Active CN217770428U (en) | 2022-05-18 | 2022-05-18 | Anti-interference lamp belt control circuit, controller and lighting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217770428U (en) |
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- 2022-05-18 CN CN202221197668.6U patent/CN217770428U/en active Active
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Address after: 528400 one of the second floor, one of the third floor and one of the fourth floor of Building 1, No. 10, Yongxing North Road, Henglan Town, Zhongshan City, Guangdong Province Patentee after: Guangdong Hongmu Lighting Technology Co.,Ltd. Country or region after: China Address before: 528400 one of the second floor, one of the third floor and one of the fourth floor of Building 1, No. 10, Yongxing North Road, Henglan Town, Zhongshan City, Guangdong Province Patentee before: ZHONGSHAN HOME LIGHTING Co.,Ltd. Country or region before: China |