CN205430709U - A light source board device for protecting LED projecting lamp and circuit thereof - Google Patents
A light source board device for protecting LED projecting lamp and circuit thereof Download PDFInfo
- Publication number
- CN205430709U CN205430709U CN201620280826.2U CN201620280826U CN205430709U CN 205430709 U CN205430709 U CN 205430709U CN 201620280826 U CN201620280826 U CN 201620280826U CN 205430709 U CN205430709 U CN 205430709U
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- circuit
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- light source
- load control
- protecting
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a light source board device for protecting LED projecting lamp and circuit thereof, include: PCB board, fuse, surge absorption ware, two -way transient -suppression diode, rectifier bridge, electrolytic capacitor, load control circuit, diode. The surge absorption ware includes: ann's rule electric capacity, piezo -resistor and paster inductance. The load control circuit includes: an at least intelligent chip and at least parameter fine setting resistance. The utility model discloses a thereby install the effect that the fuse reaches the whole circuit of protection on the circuit, through feasible great current rush to the follow -up circuit of avoiding of the snubber circuit's that surges design, be used for restraining electromagnetism conducted interference simultaneously to give the power supply of emitting diode LED safety, thereby reach the whole circuit function of protection, through installing two -way transient -suppression diode in the circuit to reach the effect of lightning protection, through installing of load control circuit to realize short -circuit protection, the temperature monitoring function.
Description
Technical field
This utility model relates to a kind of lighting technical field, particularly relates to a kind of light source board device and circuit thereof for protecting LED projector lamp.
Background technology
Owing to light emitting diode (Light electromagnetism ttingdiode, LED) has low power consumption, colour gamut width, and the advantage that light directivity is strong, the most gradually illuminated and the attention of photoelectricity association area dealer and start to be used widely.Wherein, in the relevant utensils such as liquid crystal display, light-emittingdiode, as the supplier of light source, plays considerable role especially.
In existing technology; LED projector lamp mainly uses two kinds of frame modes: the first uses multiple chip packages to become light harvesting light source module; and in this module, enclose rectifier bridge use; this mode is owing to cannot be enclosed the safety device of necessity, filtering device, protection circuit device etc. in limited volume class by encapsulation module cost and volumetric constraint; voltage is directly laggard to LED by rectifier bridge simple rectification, causes LED to be easy to by surge current, broken by lightning.The second uses independent power supply apparatus to install and use with lamp plate subregion, and this mode is that LED light source plate separates with power supply apparatus, certainly will increase the material cost such as power source cavity, power supply shell and assemble human cost.On the other hand separate with power supply apparatus due to LED light source plate, power supply apparatus cannot monitor the instantaneous operating conditions of lamp plate, when the abnormal power supply apparatus such as lamp plate High Temperature High Pressure cannot be supplied to the necessary protection of LED.
Therefore, designing a kind of is industry problem demanding prompt solution for protecting the light source board device of LED projector lamp and circuit thereof.
Utility model content
By reflecting with this, this utility model provides a kind of for protecting the light source board device of LED projector lamp, it is possible to protection circuit is run without damage, and realizes the purpose of lightning protection.
This utility model also provides for a kind of light source board circuit for protecting LED projector lamp, it is possible to protection circuit is run without damage, and realizes the purpose of lightning protection.
For achieving the above object, this utility model is by the following technical solutions: a kind of for protecting the light source board device of LED projector lamp, including pcb board；Electric fuse, described electric fuse is fixed on pcb board；Surge absorbing circuit, described surge absorbing circuit is connected to electric fuse and is fixed on pcb board；Two-way Transient Suppression Diode, described two-way Transient Suppression Diode is connected to described surge absorbing circuit and is fixed on pcb board；Rectifier bridge, described rectifier bridge is parallel to two-way Transient Suppression Diode and is fixed on pcb board；Electrochemical capacitor, described electrochemical capacitor is series at described rectifier bridge and is fixed on pcb board；Load control circuit, described load control circuit is parallel to described electrochemical capacitor and is fixed on pcb board；At least one LED, described LED is series at load control circuit and is fixed on pcb board.
Preferably, described surge absorbing circuit includes: safety electric capacity；Varistor, described varistor is parallel to safety electric capacity；Chip inductor, described chip inductor is series at two-way Transient Suppression Diode；Wherein, safety electric capacity is connected with chip inductor after varistor parallel connection again.
Preferably, described light source board circuit also includes resistance, and described resistor coupled in parallel is in electrochemical capacitor.
Preferably, described load control circuit includes: at least one intelligent control chip；At least one small parameter perturbations resistance, described small parameter perturbations resistant series is in intelligent control chip.
A kind of for protecting the light source board circuit of LED projector lamp, including: electric fuse, for protecting electric current and the temperature of whole circuit, with to LED safe power supply；Surge absorbing circuit, is used for avoiding larger current to impact subsequent conditioning circuit, is used for suppressing electromagnetism Interference, with to LED safe power supply simultaneously；Described surge absorbing circuit is connected with described electric fuse；Two-way Transient Suppression Diode, for absorbing an instantaneous large-current, thus its both end voltage strangulation one predetermined numerically, and then protection component below is not impacted by high voltage transient spike, with to LED safe power supply；Described two-way Transient Suppression Diode is series at electric fuse and is connected with described surge absorbing circuit；Rectifier bridge, for being converted to commutating voltage by input ac voltage, with to described LED safe power supply；Described rectifier bridge and described two-way transient voltage suppressor paralleling；Electrochemical capacitor, for eliminating the ripple voltage of rectifier bridge output, with to described LED safe power supply；Described electrochemical capacitor is connected with described rectifier bridge；Load control circuit, for short-circuit protection, temperature monitoring, with to described LED safe power supply；Described load control circuit is in parallel with described electrochemical capacitor；At least one LED, described LED is connected with described load control circuit.
Preferably, described surge absorbing circuit includes: safety electric capacity；Varistor, described varistor is parallel to safety electric capacity；Chip inductor, described chip inductor is series at two-way Transient Suppression Diode；Wherein, safety electric capacity is connected with chip inductor after varistor parallel connection again.
Preferably, described load control circuit includes: at least one intelligent control chip；At least one small parameter perturbations resistance, described small parameter perturbations resistant series is in intelligent control chip.
Preferably, described light source board circuit also includes resistance, and described resistor coupled in parallel is in electrochemical capacitor.
Compared with prior art, this utility model has the advantage that
A, this utility model reach to protect the effect of whole circuit by installing electric fuse on circuit.
B, this utility model make to avoid larger current to impact subsequent conditioning circuit by the design of absorbing circuit of surging, and are used for suppressing electromagnetism Interference simultaneously, with to LED safe power supply, thus reach to protect whole circuit function.
C, this utility model install two-way Transient Suppression Diode by circuit, thus reach the effect of lightning protection.
The installing by load control circuit of d, this utility model, thus realize short-circuit protection, temperature-monitoring function.
Accompanying drawing explanation
Fig. 1 is that this utility model is for protecting the light source board structure drawing of device of LED projector lamp；
Fig. 2 is that this utility model is for protecting the circuit diagram of the light source board of LED projector lamp；
Fig. 3 is this utility model load control circuit workflow diagram in the light source board method protect LED projector lamp.
Wherein, being simply described as follows of symbol in accompanying drawing:
1～pcb board；2～electric fuse；3～surge absorbing circuit；4～two-way Transient Suppression Diode；5～rectifier bridge；6～electrochemical capacitor；7～load control circuit；8～light emitting diode；301～safety electric capacity；302～varistor；303～chip inductor；701～intelligent control chip；702～small parameter perturbations resistance.
Detailed description of the invention
In order to more fully understand technology contents of the present utility model, below in conjunction with the accompanying drawings this utility model is further illustrated, but is not limited to this.
As it is shown in figure 1, the utility model proposes is a kind of for protecting the light source board device of LED projector lamp, including: pcb board 1, plays circuit and connects and the effect of thermal energy conduction.Electric fuse 2, electric fuse 2 is fixed on pcb board 1.Surge absorbing circuit 3, surge absorbing circuit 3 is connected to electric fuse 2 and is fixed on pcb board 1.Two-way Transient Suppression Diode 4 (TVS), two-way Transient Suppression Diode 4 is connected to surge absorbing circuit 3 and is fixed on pcb board 1, owing to TVS has the subnanosecond level response time and at a relatively high surge absoption ability being exceedingly fast.When the high energy impact events of moment is stood at its two ends; TVS can be become Low ESR the resistance value of go-and-retum from high impedance with high speed; to absorb an instantaneous large-current; thus its both end voltage strangulation one predetermined numerically; thus the component that protection is below is not impacted by high voltage transient spike, and then realize the lightning protection function of this light supply apparatus plate.Rectifier bridge 5, rectifier bridge 5 is parallel to two-way Transient Suppression Diode 4 and is fixed on pcb board 1.Electrochemical capacitor 6, electrochemical capacitor 6 is series at rectifier bridge 5 and is fixed on pcb board 1, and it filters primarily as filter circuit, to eliminate the ripple of power supply output.Load control circuit 7, load control circuit 7 is parallel to electrochemical capacitor 6 and is fixed on pcb board 1.Load control circuit 7 includes: at least one intelligent control chip 701.At least one small parameter perturbations resistance 702, small parameter perturbations resistance 702 is series at intelligent control chip 701.Wherein, being connected in PCB by tin cream bottom intelligent control chip 701, integrated short-circuit protection, temperature-monitoring function, when ambient temperature T1Higher, when exceeding this chip preset value T, intelligent control chip 701 is by turning the electric current of supply LED 8 down, and when the electric current flowing through LED diminishes, and caloric value diminishes, when temperature returns normal value, output electric current is adjusted to preset state by intelligent chip.At least one LED 8, LED 8 is series at load control circuit 7 and is fixed on pcb board 1.
In a preferred embodiment, surge absorbing circuit 3 includes: safety electric capacity 301.Varistor 302, varistor 302 is parallel to safety electric capacity 301, is used primarily in when circuit bears overvoltage and carries out voltage clamp, absorbs unnecessary electric current and is not damaged by with protection subsequent conditioning circuit.Chip inductor 303, chip inductor 303 is series at two-way Transient Suppression Diode 4, and when flowing through the curent change of chip inductor 303, the induction electric produced in inductance coil will definitely stop the change of electric current.When being increased by the electric current of inductance coil, the self induction electromotive force that inductance coil produces is contrary with the sense of current, stops the increase of electric current, a part of electric energy is changed into magnetic field energy simultaneously and be stored among inductance；When being reduced by the electric current of inductance coil, self induction electromotive force is identical with the sense of current, stops the reduction of electric current, discharges the energy of storage, to compensate the reduction of electric current simultaneously.Wherein, safety electric capacity 301 is connected with chip inductor 303 after varistor 302 parallel connection again.
In a preferred embodiment, light source board device also includes resistance, and resistor coupled in parallel is in electrochemical capacitor 6, to be stored in the electric energy on electrochemical capacitor 6 after being released in cut-out alternating current power supply, in case the problem that Projecting Lamp light supply apparatus plate still has remaining light after power cutoff here.
This utility model also proposes a kind of light source board circuit for protecting LED projector lamp, including: electric fuse 2, for protecting electric current and the temperature of whole circuit, with to LED 8 safe power supply.Surge absorbing circuit 3, is used for avoiding larger current to impact subsequent conditioning circuit, is used for suppressing electromagnetism Interference, with to LED 8 safe power supply simultaneously.Surge absorbing circuit 3 is connected with electric fuse 2.Two-way Transient Suppression Diode 4, for absorbing an instantaneous large-current, thus its both end voltage strangulation one predetermined numerically, and then protection component below is not impacted by high voltage transient spike, with to LED 8 safe power supply.Two-way Transient Suppression Diode 4 is series at electric fuse 2 and is connected with surge absorbing circuit 3.Rectifier bridge 5, for being converted to commutating voltage by input ac voltage, with to LED 8 safe power supply.Rectifier bridge 5 is in parallel with two-way Transient Suppression Diode 4.Electrochemical capacitor 6, for eliminating the ripple voltage of rectifier bridge 5 output, with to LED 8 safe power supply.Electrochemical capacitor 6 is connected with rectifier bridge 5.Load control circuit 7, for short-circuit protection, temperature monitoring, with to LED 8 safe power supply.Load control circuit 7 is in parallel with electrochemical capacitor 6.At least one LED 8, LED 8 is connected with load control circuit 7.
Preferably, surge absorbing circuit 3 includes: safety electric capacity 301.Varistor 302, varistor 302 is parallel to safety electric capacity 301.Chip inductor 303, chip inductor 303 is series at two-way Transient Suppression Diode 4.Wherein, safety electric capacity 301 is connected with chip inductor 303 after varistor 302 parallel connection again.
Preferably, load control circuit 7 includes: at least one intelligent control chip 701.At least one small parameter perturbations resistance 702, small parameter perturbations resistance 702 is series at intelligent control chip 701.
Preferably, light source board circuit also includes resistance, and resistor coupled in parallel is in electrochemical capacitor 6.
This utility model comprises the following steps for protecting the Method And Principle of the light source board of LED projector lamp:
A. the electric current of input is filtered into plateau current by surge absorbing circuit 3.
B. plateau current transmission is arranged to two-way Transient Suppression Diode 4 and obtain definite value electric current.
C. arrange through electrochemical capacitor 6 after definite value electricity being streamed to rectifier bridge 5 and obtain filtered circuit.
D. filtered electrical is streamed to load control circuit 7 arrangement and obtains predetermined current.
E. predetermined current transmission is powered to LED 8 safety and steady.
Preferably, for protecting the light source board circuit methods of LED projector lamp also to include: resistance, resistor coupled in parallel, in electrochemical capacitor 6, is stored in the electric energy on electrochemical capacitor 6 after discharging cut-out circuit.
Preferably, step D includes:
When ambient temperature T1Higher, when exceeding preset value T, load control circuit 7 will turn the electric current of supply LED 8 down.
When the electric current flowing through LED 8 diminishes, and caloric value diminishes, when temperature returns normal value, output electric current is adjusted to preset state by load control circuit 7.
In sum: this utility model reaches to protect the effect of whole circuit by installing electric fuse 2 on circuit；Make to avoid larger current to impact subsequent conditioning circuit by the design of absorbing circuit of surging, be used for suppressing electromagnetism Interference simultaneously, with to LED 8 safe power supply, thus reach to protect whole circuit function；By circuit is installed two-way Transient Suppression Diode 4, thus reach the effect of lightning protection；By the installing of load control circuit 7, thus realize short-circuit protection, temperature-monitoring function.
Above specific embodiment is only in order to illustrate design of the present utility model, and those of ordinary skill in the art can make various deformation and change under design of the present utility model.Within these deformation and change are included in protection domain of the present utility model.
Claims (8)
1. the light source board device being used for protecting LED projector lamp, it is characterised in that including:
Pcb board；
Electric fuse, described electric fuse is fixed on pcb board；
Surge absorbing circuit, described surge absorbing circuit is connected to electric fuse and is fixed on pcb board；
Two-way Transient Suppression Diode, described two-way Transient Suppression Diode is connected to described surge absorbing circuit and is fixed on pcb board；
Rectifier bridge, described rectifier bridge is parallel to two-way Transient Suppression Diode and is fixed on pcb board；
Electrochemical capacitor, described electrochemical capacitor is series at described rectifier bridge and is fixed on pcb board；
Load control circuit, described load control circuit is parallel to described electrochemical capacitor and is fixed on pcb board；
At least one LED, described LED is series at load control circuit and is fixed on pcb board.
2. as claimed in claim 1 for protecting the light source board device of LED projector lamp, it is characterised in that described surge absorbing circuit includes:
Safety electric capacity；
Varistor, described varistor is parallel to safety electric capacity；
Chip inductor, described chip inductor is series at two-way Transient Suppression Diode；
Wherein, safety electric capacity is connected with chip inductor after varistor parallel connection again.
3. as claimed in claim 1 for protecting the light source board device of LED projector lamp, it is characterised in that described light source board device also includes resistance, and described resistor coupled in parallel is in electrochemical capacitor.
4. as claimed in claim 1 for protecting the light source board device of LED projector lamp, it is characterised in that described load control circuit includes:
At least one intelligent control chip；
At least one small parameter perturbations resistance, described small parameter perturbations resistant series is in intelligent control chip.
5. the light source board circuit being used for protecting LED projector lamp, it is characterised in that including:
Electric fuse, for protecting electric current and the temperature of whole circuit, with to LED safe power supply；
Surge absorbing circuit, is used for avoiding larger current to impact subsequent conditioning circuit, is used for suppressing electromagnetism Interference, with to LED safe power supply simultaneously；Described surge absorbing circuit is connected with described electric fuse；
Two-way Transient Suppression Diode, for absorbing an instantaneous large-current, thus its both end voltage strangulation one predetermined numerically, and then protection component below is not impacted by high voltage transient spike, with to LED safe power supply；Described two-way Transient Suppression Diode is series at electric fuse and is connected with described surge absorbing circuit；
Rectifier bridge, for being converted to commutating voltage by input ac voltage, with to described LED safe power supply；Described rectifier bridge and described two-way transient voltage suppressor paralleling；
Electrochemical capacitor, for eliminating the ripple voltage of rectifier bridge output, with to described LED safe power supply；Described electrochemical capacitor is connected with described rectifier bridge；
Load control circuit, for short-circuit protection, temperature monitoring, with to described LED safe power supply；Described load control circuit is in parallel with described electrochemical capacitor；
At least one LED, described LED is connected with described load control circuit.
6. as claimed in claim 5 for protecting the light source board circuit of LED projector lamp, it is characterised in that described surge absorbing circuit includes:
Safety electric capacity；
Varistor, described varistor is parallel to safety electric capacity；
Chip inductor, described chip inductor is series at two-way Transient Suppression Diode；
Wherein, safety electric capacity is connected with chip inductor after varistor parallel connection again.
7. as claimed in claim 5 for protecting the light source board circuit of LED projector lamp, it is characterised in that described load control circuit includes:
At least one intelligent control chip；
At least one small parameter perturbations resistance, described small parameter perturbations resistant series is in intelligent control chip.
8. as claimed in claim 5 for protecting the light source board circuit of LED projector lamp, it is characterised in that described light source board circuit also includes resistance, and described resistor coupled in parallel is in electrochemical capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620280826.2U CN205430709U (en) | 2016-04-06 | 2016-04-06 | A light source board device for protecting LED projecting lamp and circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620280826.2U CN205430709U (en) | 2016-04-06 | 2016-04-06 | A light source board device for protecting LED projecting lamp and circuit thereof |
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| Publication Number | Publication Date |
|---|---|
| CN205430709U true CN205430709U (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620280826.2U Expired - Fee Related CN205430709U (en) | 2016-04-06 | 2016-04-06 | A light source board device for protecting LED projecting lamp and circuit thereof |
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| CN (1) | CN205430709U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969272A (en) * | 2017-03-22 | 2017-07-21 | 鹰潭阳光照明有限公司 | A kind of integrated photoconductive structure and the LED illumination lamp using the integrated photoconductive structure |
-
2016
- 2016-04-06 CN CN201620280826.2U patent/CN205430709U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969272A (en) * | 2017-03-22 | 2017-07-21 | 鹰潭阳光照明有限公司 | A kind of integrated photoconductive structure and the LED illumination lamp using the integrated photoconductive structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20190406 |