CN204090209U - COB light source drive circuit and driving integrated form COB light source - Google Patents
COB light source drive circuit and driving integrated form COB light source Download PDFInfo
- Publication number
- CN204090209U CN204090209U CN201420337385.6U CN201420337385U CN204090209U CN 204090209 U CN204090209 U CN 204090209U CN 201420337385 U CN201420337385 U CN 201420337385U CN 204090209 U CN204090209 U CN 204090209U
- Authority
- CN
- China
- Prior art keywords
- light source
- rest area
- cob light
- constant
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model provides a kind of COB light source drive circuit and drives integrated form COB light source, by adopting ac input end, rectification module, constant-current voltage-stabilizing chip and LED wafer to form COB light source drive circuit, and described ac input end is connected in series successively with rectification module, constant-current voltage-stabilizing chip and LED wafer.Because constant-current voltage-stabilizing chip is different from common low voltage drive chip, it can stablize the certain constant current of output in quite wide input voltage range.And constant-current voltage-stabilizing chip self possesses thermoregulation energy, cause thermal damage can be avoided or enter overheat protector positive closing state.Therefore, after adopting this drive circuit, COB light source product no longer needs above loaded down with trivial details circuit design to enormously simplify circuit formation, and can integrate easily as COB light source, the more small and exquisite availability of product, stability are all higher than common product.
Description
Technical field
The utility model relates to a kind of lighting apparatus, refers in particular to a kind of COB light source drive circuit and drives integrated form COB light source.
Background technology
LED (light emitting diode light-emitting diode) is a kind of can be the semiconductor of visible ray by electric energy conversion, the advantage such as have luminous efficiency high (LED of two watts is equivalent to the incandescent lighting of 15 watts), power consumption little (power consumption only has 1/10 of general lighting), the life-span is long, volume is little, is considered to revolution again of lighting source after incandescent lamp, fluorescent lamp.
But generally LED drive circuit is comparatively complicated, circuit is short for normal working hours, and conversion efficiency is not high, and these all become the short slab in LED popularization and application process.
LED drive circuit structure general is at present divided into Width funtion input, antisurge protection, full-bridge rectification, isolating transformer, EMC filtering, constant-current source, light modulation, the parts such as instruction of turning off the light; visible above-mentioned device is numerous; this also causes too much wiring congestion cooling requirements too high; and the impact of the reasons such as device consistency, the stability of LED drive circuit goes through one's facings deeply.
General LED drive circuit all can use aluminium electrolytic capacitor, but its useful life is below 5000 hours, but also has much relations with environment for use temperature, and ambient temperature often raises 10 degrees Celsius, and the electrolytic capacitor life-span will reduce half.Therefore, industry is all in the LED drive circuit solution finding no electrolytic capacitor or substituted type.
Utility model content
Technical problem to be solved in the utility model is: by improving LED drive circuit, thus avoids connect up difficulty, difficult, that stability is not high and the life-span is not grown problem of dispelling the heat in the past.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of COB light source drive circuit, is made up of ac input end, rectification module, constant-current voltage-stabilizing chip and LED wafer; Described ac input end is connected in series successively with rectification module, constant-current voltage-stabilizing chip and LED wafer, and described rectification module comprises bridge full-wave rectifier unit.
The utility model also relates to a kind of driving integrated form COB light source, and comprise substrate and a kind of COB light source drive circuit, described COB light source drive circuit is made up of ac input end, rectification module, constant-current voltage-stabilizing chip and LED wafer; Described ac input end is connected in series successively with rectification module, constant-current voltage-stabilizing chip and LED wafer, and described rectification module comprises bridge full-wave rectifier unit,
Described substrate is provided with at least two rest areas, and the LED wafer of described COB light source drive circuit is positioned in a rest area, and described rectification module and constant-current voltage-stabilizing chip are positioned in another rest area; On substrate, be also provided with ac input end, be provided with circuit in described substrate and described ac input end is connected in series with rectification module, constant-current voltage-stabilizing chip and LED wafer.
The beneficial effects of the utility model are: in drive circuit design, adopt LED wafer to add the circuit structure of constant-current voltage-stabilizing chip, because constant-current voltage-stabilizing chip is different from common low voltage drive chip, it can stablize the certain constant current of output in quite wide input voltage range.And constant-current voltage-stabilizing chip self possesses thermoregulation energy, cause thermal damage can be avoided or enter overheat protector positive closing state.By new drive circuit, no longer need above loaded down with trivial details circuit design to enormously simplify circuit and form, therefore its a whole set of driving can integrate easily as COB light source, and the more small and exquisite availability of product, stability are all higher than common product.
Accompanying drawing explanation
Below in conjunction with accompanying drawing in detail concrete structure of the present utility model is described in detail
Fig. 1 is the circuit theory diagrams of the utility model COB light source drive circuit;
Fig. 2 is that the utility model drives integrated form COB light source structural representation;
Fig. 3 is that the utility model drives the rear structural representation of integrated form COB light source encapsulation;
Fig. 4 is that the utility model drives integrated form COB light source first example structure schematic diagram;
Fig. 5 is that the utility model drives integrated form COB light source second example structure schematic diagram.
1-substrate; 2-LED wafer; 3-first rectifier diode; 4-second rectifier diode; 5-the 3rd rectifier diode; 6-the 4th rectifier diode; 7-constant-current voltage-stabilizing chip; 8-protective layer; 9-luminescent layer; 11-first rest area; 12-second rest area; 13-the 3rd rest area; 14-first pad; 15-second pad; 16-first boss; 17-second boss; 18-the 3rd boss.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
The design of the utility model most critical is: add constant-current voltage-stabilizing chip by LED wafer, rectification circuit forms drive circuit; by the characteristic of constant-current voltage-stabilizing chip; simplify circuit; and can not only wide input voltage range be supported and stable output, also possess the effect avoided cause thermal damage or enter overheat protector.
The utility model relates to a kind of COB light source drive circuit, is made up of ac input end, rectification module, constant-current voltage-stabilizing chip and LED wafer; Described ac input end is connected in series successively with rectification module, constant-current voltage-stabilizing chip and LED wafer.
From foregoing description, the beneficial effects of the utility model are: adopt the mode of built-in constant-current voltage-stabilizing chip to provide direct current for LED, do not re-use other independently components and parts, more there is no the components and parts that transformer equivalent life is short, the volume that this kind of method for designing not only reduces LED light source facilitates design and the automated production of light fixture, significantly reduces cost especially.
Embodiment 1:
In above-mentioned, described rectification module comprises bridge full-wave rectifier unit.
The concrete example of embodiment 1:
Refer to Fig. 1, disclose one and directly with the COB light source drive circuit that AC220V (or AC110V) powers, the load that constant-current voltage-stabilizing chip U1, the full wave rectifying unit be made up of four groups of rectifier diode D1/D2/D3/D4 and a multiple LED wafer are formed can be comprised.
Wherein, the accurate device such as current-limiting resistance that constant-current voltage-stabilizing chip U1 is inherently provided with adjustment electric current forms built-in constant-current source jointly.Described constant-current voltage-stabilizing chip U1 input is electrically connected with rectifier diode D1, D2 and LED wafer, and this constant-current voltage-stabilizing chip U1 output is electrically connected with described rectifier diode D3, D4, forms load LED constant current drive circuit
Above-mentioned load LED constant current drive circuit can two groups oppositely connect together, use civil power Direct driver, in load LED constant current drive circuit, current strength reaches constant current object by the current-limiting resistance that constant-current voltage-stabilizing wafer U1 is built-in.
When specifically using, AC220V (or AC110V) is directly circuit supply by L/N, and alternating current is by built-in constant-current voltage-stabilizing chip U1 and the multiple LED wafer luminescence of accessory circuit rear drive.
The utility model also relates to a kind of driving integrated form COB light source, comprises substrate and COB light source drive circuit as above.Described substrate is provided with at least two rest areas, and the LED wafer of described COB light source drive circuit is positioned in a rest area, and described rectification module and constant-current voltage-stabilizing chip are positioned in another rest area; On substrate, be also provided with ac input end, be provided with circuit in described substrate and described ac input end is connected in series with rectification module, constant-current voltage-stabilizing chip and LED wafer.
From foregoing description, the beneficial effects of the utility model are: because drive circuit is greatly simplified, and therefore its various piece can encapsulate on one substrate with LED wafer very easily, thus it is high to form one degree, the product of compact.
Embodiment 1:
Luminescent layer is coated with outside the rest area of described placement LED wafer; The protective layer that protecting glue is formed is coated with outside another rest area of described placement rectification module and constant-current voltage-stabilizing chip.
Thus, luminescent layer can play the effect to placing LED wafer luminous intensity distribution.Rectification module and constant-current voltage-stabilizing chip then can wrap up and protecting by protective layer, play the protected effect such as isolation, waterproof.
Embodiment 2:
In above-mentioned, outside the rest area of described placement LED wafer, be provided with a circle boss; A circle boss is provided with outside another rest area of described placement rectification module and constant-current voltage-stabilizing chip.
The setting of boss structure herein can be played and place excessive function in above-mentioned luminescent layer, protective layer forming process, thus makes production more convenient.
Embodiment 3:
Described protecting glue is made up of light-proof material.Protecting glue adopts light tight, and light source luminescent can be avoided to greatest extent on the impact of components and parts in drive circuit.Particularly in drive circuit, the steady operation of constant-current voltage-stabilizing chip U1 is unsuitable photosensitive.
Embodiment 3:
In above-mentioned, described substrate is provided with the first pad and the second pad, the first pad and the second pad form described ac input end; Described first pad and the second pad are arranged near substrate edges.
Ac input end be arranged on substrate edges can conveniently with external cabling and the production work of welding.
Embodiment 4:
In above-mentioned, described rectification module comprises four groups of diodes; A described rest area is the first rest area; Another rest area described comprises the second rest area and the 3rd rest area; Be placed with two groups of diodes in described second rest area, in the 3rd rest area, be placed with another two groups of diodes and constant-current voltage-stabilizing chip.
It is more flexible rationally that the benefit another rest area being split as two rest areas is to make the structure layout design of whole product.
Concrete example:
A kind of driving integrated form COB light source, multiple LED wafer 2 is by a border circular areas of the substrate 1 at COB (the first rest area 11), border circular areas in a substrate between form the light-emitting area of COB light source, multiple LED wafer are wherein the wafer of blue light-emitting, wavelength is at 440nm-460nm, the first boss 16 is arranged with outside it, by the first boss 16 around surperficial embedding be mixed with the silica gel of different fluorescent material thus form luminescent layer 9, make this drive integrated form COB light source to send required light.
The first rectifier diode 3, second rectifier diode 4, the 3rd rectifier diode 5 and the 4th rectifier diode 6 in the bridge full-wave rectifier unit of rectification module and constant-current voltage-stabilizing chip 7 are naked wafer; a few person is bonded in the second rest area 12, the 3rd rest area 13 respectively by WB technology; the second boss 17 is provided with outside the second rest area 12; be provided with the 3rd boss 18 outside 3rd rest area 13, two boss around surface protecting glue form protective layer 8 and protect.
When specifically using, AC220V (or AC110V) is directly the circuit supply on substrate by the first pad 14, second pad 15 on substrate, and alternating current is by built-in constant-current voltage-stabilizing chip 7 and the multiple LED wafer luminescence of accessory circuit rear drive.
Embodiment 5:
As shown in Figure 2,3, described substrate 1 is rectangular, and described first rest area 11 is arranged in the middle part of substrate 1, on the second rest area 12 and substrate 1 liang of diagonal angle, 13 points, the 3rd rest area; First pad 14, second pad 15 of described ac input end is arranged on another two diagonal angles of substrate 1.
In the present embodiment, layout adopts LED wafer to place in the middle part of substrate, and remaining part is around configuration of optimizing structure while the structure of placing can take into account production efficiency, thus it is more small and exquisite to guarantee that product is convenient to the basic upper volume of production.
Embodiment 6:
As shown in Figure 4,5, in above-mentioned, described substrate 1 is rectangular, and described first rest area 11 is arranged in the middle part of substrate 1, second rest area 12 and the 3rd rest area 13 are along substrate 1 while arrange, and substrate 1 arranges the first pad 14, second pad 15 of described ac input end in relative another side.
The layout core that above-described embodiment 5,6 provides all is COB light source and driving circuit section to be provided separately on substrate as far as possible, and its benefit that can bring is:
1, the impact of light source luminescent on components and parts in drive circuit can effectively be solved.Such as, unsuitable photosensitive in constant-current voltage-stabilizing chip U1 characteristic in the utility model.
2, for light source provides enough spaces, the heat making it send is transmitted to heat sink radiates by substrate, thus reduces heat burden driving components and parts too much each in drive circuit.
3, effectively utilize substrate space, thus make the later stage convenient with coordinating of light fixture.Such as when coordinating with reflector, the space of placing between light source and the two parts placing drive circuit just supports the use with reflector.
In sum, the utility model is by the mode of built-in constant current wafer, for LED provides direct current, do not re-use other independently components and parts, more there is no the components and parts that transformer equivalent life is short, the volume that this kind of method for designing not only reduces LED light source facilitates design and the automated production of light fixture, significantly reduces cost especially
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (9)
1. a COB light source drive circuit, is characterized in that: be made up of ac input end, rectification module, constant-current voltage-stabilizing chip and LED wafer; Described ac input end is connected in series successively with rectification module, constant-current voltage-stabilizing chip and LED wafer,
Described rectification module comprises bridge full-wave rectifier unit.
2. drive an integrated form COB light source, it is characterized in that: comprise substrate and COB light source drive circuit as claimed in claim 1; Described substrate is provided with at least two rest areas, and the LED wafer of described COB light source drive circuit is positioned in a rest area, and described rectification module and constant-current voltage-stabilizing chip are positioned in another rest area; On substrate, be also provided with ac input end, be provided with circuit in described substrate and described ac input end is connected in series with rectification module, constant-current voltage-stabilizing chip and LED wafer.
3. driving integrated form COB light source as claimed in claim 2, is characterized in that: be coated with luminescent layer outside the rest area of described placement LED wafer; Protecting glue is coated with outside another rest area of described placement rectification module and constant-current voltage-stabilizing chip.
4. driving integrated form COB light source as claimed in claim 3, is characterized in that: described protecting glue is made up of light-proof material.
5. driving integrated form COB light source as claimed in claim 2, is characterized in that: be provided with a circle boss outside the rest area of described placement LED wafer; A circle boss is provided with outside another rest area of described placement rectification module and constant-current voltage-stabilizing chip.
6. driving integrated form COB light source as claimed in claim 2, it is characterized in that: described substrate is provided with the first pad and the second pad, the first pad and the second pad form described ac input end; Described first pad and the second pad are arranged near substrate edges.
7. the driving integrated form COB light source as described in claim 2-6 any one, is characterized in that: described rectification module comprises four groups of diodes; A described rest area is the first rest area; Another rest area described comprises the second rest area and the 3rd rest area; Be placed with two groups of diodes in described second rest area, in the 3rd rest area, be placed with another two groups of diodes and constant-current voltage-stabilizing chip.
8. driving integrated form COB light source as claimed in claim 7, it is characterized in that: described substrate is rectangular, described first rest area is arranged in the middle part of substrate, and the second rest area and the 3rd is placed and distinguished on substrate two diagonal angle; Described ac input end is arranged on another two diagonal angles of substrate.
9. driving integrated form COB light source as claimed in claim 7, it is characterized in that: described substrate is rectangular, described first rest area is arranged in the middle part of substrate, and the second rest area and the 3rd rest area are arranged along substrate, and substrate arranges described ac input end in relative another side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420337385.6U CN204090209U (en) | 2014-06-23 | 2014-06-23 | COB light source drive circuit and driving integrated form COB light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420337385.6U CN204090209U (en) | 2014-06-23 | 2014-06-23 | COB light source drive circuit and driving integrated form COB light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204090209U true CN204090209U (en) | 2015-01-07 |
Family
ID=52182873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420337385.6U Expired - Fee Related CN204090209U (en) | 2014-06-23 | 2014-06-23 | COB light source drive circuit and driving integrated form COB light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204090209U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104023452A (en) * | 2014-06-23 | 2014-09-03 | 深圳市聚人成电子材料有限公司 | COB light source drive circuit and drive integrated type COB light source |
-
2014
- 2014-06-23 CN CN201420337385.6U patent/CN204090209U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104023452A (en) * | 2014-06-23 | 2014-09-03 | 深圳市聚人成电子材料有限公司 | COB light source drive circuit and drive integrated type COB light source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203641919U (en) | Integrated LED (light-emitting diode) illumination module | |
| US9414454B2 (en) | Solid state lighting apparatuses and related methods | |
| US20140268737A1 (en) | Direct view optical arrangement | |
| CN102954366A (en) | Light engine with led switching array | |
| CN104421682B (en) | LED light source module and the LEDbulb lamp comprising the module | |
| CN104282676A (en) | Integrated LED lamp panel packaging structure and technology | |
| CN103672459B (en) | The light emitting diode illuminating apparatus of offer directional beam with cramped construction | |
| CN104347606B (en) | Package structure for LED and light source module | |
| CN103337582B (en) | LED light source and manufacture method thereof | |
| CN205177876U (en) | AC flexible LED filament that gives off light | |
| CN204090209U (en) | COB light source drive circuit and driving integrated form COB light source | |
| CN103196049A (en) | LED (light-emitting diode) lamp panel adopting integrated COB (chip on board) packaging technology | |
| CN105810794A (en) | LED packaging structure | |
| CN203675368U (en) | All-chip integrated AC LED light source | |
| CN105609496A (en) | High power density COB (Chip On Board) packaged white LED (Light Emitting Diode) module and packaging method thereof | |
| CN203223777U (en) | Illuminating device | |
| CN103453349A (en) | Led lamp | |
| CN102340918A (en) | Alternating current LED (Light Emitting Diode) device | |
| CN104023452A (en) | COB light source drive circuit and drive integrated type COB light source | |
| CN103887299A (en) | High-voltage LED light source | |
| CN203659925U (en) | High brightness surface mount device light-emitting diode | |
| CN203413588U (en) | LED (Light Emitting Diode) light source board assembly, LED lamp wick and LED lighting device | |
| CN203339225U (en) | Non-encapsulation chip LED lighting illumination structure | |
| CN206647775U (en) | A kind of integrated LED light source module for construction site illuminator | |
| CN206036806U (en) | LED railway signal light source |
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 |
Granted publication date: 20150107 Termination date: 20170623 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |