CN201382335Y - LED backlight - Google Patents
LED backlight Download PDFInfo
- Publication number
- CN201382335Y CN201382335Y CN200920135747U CN200920135747U CN201382335Y CN 201382335 Y CN201382335 Y CN 201382335Y CN 200920135747 U CN200920135747 U CN 200920135747U CN 200920135747 U CN200920135747 U CN 200920135747U CN 201382335 Y CN201382335 Y CN 201382335Y
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- led
- emitting diode
- light emitting
- led light
- pcb board
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Abstract
The utility model discloses a backlight, which comprises at least one back board, a framework, at least one PCB board, at least one LED light-emitting unit arranged on the PCB board and a control device, wherein, the PCB board is further provided with at least one power supply positive wire, at least one power supply negative wire and at least one signal wire, all the LED light-emitting units are connected through at least one signal wire, a power supply positive pole circuit and a power supply negative pole circuit, each LED light-emitting unit comprises at least one group of LEDs, the PCB board is fixedly connected with the back board, the light-emitting surface of each LED light-emitting unit and the back board are arranged on the same side surface of the PCB board, the back board is fixedly arranged on the framework for leading all the LED light-emitting units to form a lattice on the framework, and the control device is arranged on the framework for controlling the LED light-emitting units. The backlight has the advantages of high light-emitting efficiency and good light-emitting effect.
Description
Technical field
The utility model relates to a kind of lighting device, relates in particular to a kind of backlight.
Background technology
At present, the brightening at night of outdoor advertising board comprises dual mode: first kind is to adopt passive lighting system, and the plug-in highlight illumination light source at the billboard edge is not installed light emitting source on billboard; The 2nd, on billboard content body and base plate, neon light is installed, realize the brightening at night of billboard.Using neon light brightening outdoor advertising board is main mode, though the advantage that the neon light brightening has is lucuriant in design, luminous intensity is high, a large amount of use neon lights bring harm more and more obvious.Because neon light adopts traditional principle of luminosity that high voltage supply need be provided, it is huge to consume energy, and forms light, electromagnetism and environmental pollution; The control mode complexity, the cost height; The parts manufacturing that neon light uses is installed complicated; Parts such as neon light are short service life, and maintenance workload is big.And the brightening at night of outdoor advertising board comprises advertisement main body (generally being literal and pattern) and base plate.The neon light that the quantity of the neon light of installing on the base plate is often used greater than main body is the major part of power consumption.
In the prior art, backlight is because the light that sends of light source is subjected to the influence of material of light source own or surrounding environment easily, and for example, the extinction of each material, reflective etc. reduces luminous efficiency, thereby makes illumination effect bad.
Therefore, there is defective in prior art, needs to improve.
The utility model content
Technical problem to be solved in the utility model is, a kind of luminous efficiency height is provided, and the good backlight of illumination effect.
The technical solution of the utility model is as follows: a kind of backlight comprises at least one backboard, a framework, at least one pcb board and be arranged at least one LED luminescence unit of pcb board, a control device;
Described pcb board also is provided with at least one positive source line, a few positive source line, a few holding wire, is connected with a power cathode circuit by at least one holding wire, a positive source circuit between each LED luminescence unit,
Each LED luminescence unit comprises at least one group of LED light emitting diode,
Described pcb board is fixedlyed connected with described backboard, and the exiting surface of each LED luminescence unit and described backboard are arranged on the same side of described pcb board,
Described backboard is fixedly installed on the described framework, and be used for each LED luminescence unit and form dot matrix at described framework,
Described control device is arranged on the described framework; Be used to control each LED luminescence unit.
Described backlight, each is organized the LED light emitting diode and comprises at least 1 red LED light emitting diode, at least 1 green LED light emitting diode and at least 1 blue led light emitting diode; Perhaps, arbitrary group of LED light emitting diode comprises at least 1 red LED LED core, at least 1 green LED LED core and at least 1 blue led LED core.
Described backlight, described control device comprise an inductor, a control module, a gauge tap and at least one control module.
Described backlight, one light modulation drive circuit also is set, described light modulation drive circuit comprises light adjusting circuit and drive circuit, every road output of described light adjusting circuit connects by corresponding every road drive circuit with it, and with described LED luminescence unit in each LED light emitting diode in LED light emitting diode homochromy or same position be connected in series mutually.
Described backlight, described light adjusting circuit are the light modulation special ICs, or the dimming function circuit of programming device design; Described drive circuit is integrated power amplifying circuit or discrete amplifying circuit.
Described backlight, backlight according to claim 1 is characterized in that, is covered with the rete of one deck black on the described pcb board.
Adopt such scheme, the utility model is by replacing original neon light with the LED-backlit source, and the main effect that had both guaranteed brightening also reduces manufacturing cost and use cost greatly.Be suitable for standardized production, overcome the hard work that neon light needs parts such as on-the-spot assembling fluorescent tube, fixed support; Safe and low consumption, safe low voltage operating, power consumption is 1/5 of a neon light; Control is flexible, and it is low to control cost, and change in pattern is abundant; Durable in use, the led light source life-span can reach 100,000 hours, is 5 times of neon light tube, reduces maintenance cost greatly.What outdoor billboard brightening at night was used at present is neon light and the flood lighting lamp technology that history decades is arranged, and LED is novel energy-conserving, low pressure, the environmental protection light-emitting component that occurs in recent years, make the luminous efficiency of the utility model backlight the highest, adopt this backlight contrast can reach the highest thereby make, display effect is very good.
Description of drawings
Fig. 1 is the schematic diagram of the utility model embodiment 1;
Fig. 2 is the schematic diagram of the utility model embodiment 2;
Fig. 3 is the schematic diagram of the utility model embodiment 3;
Fig. 4 is the schematic diagram of the utility model embodiment 4.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Embodiment 1
As shown in Figure 1, a kind of backlight of present embodiment comprises at least one backboard, a framework, at least one pcb board and be arranged at least one LED luminescence unit of pcb board, a control device; Described PCB101 plate also is provided with at least one positive source line, a few positive source line, a few holding wire, pass through at least one holding wire between each LED luminescence unit, a positive source circuit is connected with a power cathode circuit, each LED luminescence unit comprises at least one group of LED light emitting diode, described pcb board is fixedlyed connected with described backboard, and, the exiting surface of each LED luminescence unit and described backboard are arranged on the same side of described pcb board, described backboard is fixedly installed on the described framework, be used for each LED luminescence unit and form dot matrix at described framework, described control device is arranged on the described framework; Be used to control each LED luminescence unit.
Backlight in the present embodiment comprises a backboard,, the described backboard side of being set to body, side's body backboard comprises four sides and two sides, each LED light emitting diode 102 and control device thereof are fixed on the pcb board 101, and each LED light emitting diode adopts the silicones of black to encapsulate.
Power supply positive and negative electrode polar curve and at least one holding wire are set on the pcb board 101.The positive and negative polar curve of power supply can provide voltage for the present embodiment backlight, and each LED light emitting diode 102 is as the light source of backlight.Control device is used for driving each LED light emitting diode of control, and can be according to the LED control signal of each holding wire transmission, drive the LED light emitting diode of control varying number, make each LED light emitting diode can realize that different brightness change, and make color and the variation that mutually combines and be different between each LED light emitting diode.
Control device can also be set to single wire transmitted controller, and the control signal wire of single line transmission of control signals only is a control signal wire of being made up of a lead.
Each LED light emitting diode 102 is installed on the pcb board 101, and pcb board 101 is fixedlyed connected with described backboard, and promptly pcb board is fixed on the described backboard by fixture is set.
For example, a clamp is set on the backboard, is provided with on the pcb board 101 and the corresponding fixed bit of clamp, clamp embeds in the pcb board 101, and is fixed on the fixed bit, to realize fixedlying connected of pcb board 101 and backboard.Perhaps also can be at backboard and pcb board 101 at last buckle and the draw-in groove of being provided with respectively, pcb board 101 and backboard are by corresponding buckle and fixedly clamping of draw-in groove.
And for example, a latch is set on the backboard, corresponding pin hole is set on the pcb board 101, pcb board 101 is fixed by latch and pin hole with backboard and is pegged graft.
The exiting surface of each LED light emitting diode 102 and described backboard are arranged on the same side of described pcb board 101, and promptly the exiting surface of each LED light emitting diode 102 is relative with backboard.Backboard generally adopts optical material to make, for example, and the backboard that backboard can be made for optical material acryl sheet material, the light that sends from each LED light emitting diode, through evenly deriving behind the backboard, backboard can make the spot light through backboard become area source, and makes distribution of light more even.
Usually, a backlight can be provided with two groups of LED light emitting diodes at least, and each organizes the side that the LED light emitting diode is separately positioned on described backboard.Wherein, adjacent dual-side can be set, for example, wherein one group is arranged on side 103, and other one group is arranged on side 104; Perhaps, also can be arranged on relative dual-side, for example, be separately positioned on side 103 and side 105, perhaps be separately positioned on side 104 and side 106.
And, three groups of LED light emitting diodes can also be set, each is organized in side 103, side 104, side 105 and the side 106 that the LED light emitting diode is separately positioned on backboard on wherein three sides, four groups of LED light emitting diodes also can be set, and four groups of LED light emitting diodes are separately positioned on side 103, side 104, side 105 and the side 106 of backboard.Under the same conditions, the LED light emitting diode group number of setting is many more, and then the brightness of backboard is strong more, to satisfy the brightness of actual needs.
In addition, can also be at the side of backboard, the corresponding fixed bit that is provided with each LED light emitting diode is used for fixing each LED light emitting diode, to keep the position of each LED light emitting diode.For example, fixed bit can be the groove on the backboard side, the size of groove just in time with the corresponding setting of the exiting surface of each LED light emitting diode, make the exiting surface of each LED light emitting diode just in time can be placed in the groove, to keep its position, and, the light of light-emitting area is imported in the backboard better, improve the utilization rate of light.
The light that each LED light emitting diode 102 sends by each side importing backboard of backboard, and passes through backboard and evenly derives, with the backlight with outdoor advertisement.Because each LED light emitting diode is arranged on the side of backboard, so this backlight can be set to extremely thinly, makes the product after the moulding light, carries easily; And LED lumination of light emitting diode efficient height, long service life.
In addition, in order to make the light that comes out from backboard not be subjected to the influence of pcb board, as: absorb, reflection etc., can also on pcb board, be covered with the rete of one deck black, rete can cover the surface of pcb board by the mode of plated film, because the LED light emitting diode is a silicone encapsulation, silicones does not produce any influence to the LED light emitting diode of exiting surface, therefore, light will directly enter on the backboard, and light comes out from backboard, and to penetrating all around, be radiated on the pcb board that is coated with the black rete, the black rete can be common black plastic, and black plastic has light absorptive, the light of directive backboard side can be absorbed, make the light that does not influence the backboard side, and, make the display effect of application product better.
Embodiment 2
As shown in Figure 2, in above-mentioned each example, each is organized on the side that LED light emitting diode 102 also can be arranged on described backboard.For example, each LED light emitting diode 102 is arranged on the backboard side 107 wherein, promptly each LED light emitting diode 102 is fixed on the planar pcb board 101, and the exiting surface of each LED light emitting diode is relative with backboard.The light that each LED light emitting diode sends imports backboards from the side 107 of backboard, and through behind the backboard, evenly derives, with as the backlight to LCD, mobile phone etc.
In addition, fixed bit can also be set on backboard, the corresponding LED light emitting diode of each fixed bit, fixed bit is used for fixing each LED light emitting diode, to keep the displacement of each LED light emitting diode.For example, fixed bit can be the groove on the backboard, the size of groove just in time with the corresponding setting of the exiting surface of each LED light emitting diode, make the exiting surface of each LED light emitting diode just in time can be placed in the groove, to keep displacement, and, the light of light-emitting area is imported in the backboard better, improve the utilization rate of light.
In order better to control each LED light emitting diode, a described control device also is set, described control device comprises an inductor, a control module, a gauge tap and at least one control module.
One light modulation drive circuit also is set, described light modulation drive circuit comprises light adjusting circuit and drive circuit, every road output of described light adjusting circuit connects by corresponding every road drive circuit with it, and with described LED luminescence unit in each LED light emitting diode in LED light emitting diode homochromy or same position be connected in series mutually.Described light adjusting circuit is the light modulation special IC, or the dimming function circuit of programming device design; Described drive circuit is integrated power amplifying circuit or discrete amplifying circuit.
Embodiment 3
On the basis of above-mentioned each example, as shown in Figure 3, arbitrary group of LED light emitting diode comprises at least 1 red LED light emitting diode 301, at least 1 green LED light emitting diode 302 and at least 1 blue led light emitting diode 303; For example, 1 red LED light emitting diode, 301,1 green LED light emitting diode 302 and 1 blue led light emitting diode 303 can be formed a pixel jointly, the LED light-emitting diode pixel point that comprises three kinds of colors, can be by the independent respectively control of control device, cooperatively interact and send the versicolor light that nature exists, as white light.
Each LED light emitting diode of each pixel can be arranged in line, each LED light emitting diode that straight line is arranged can make the shared space of each pixel minimum relatively, make the light between each pixel more concentrated, each pixel interval can be set to minimum.
Embodiment 4
As shown in Figure 4, in embodiment 3, can also form a pixel by a LED light emitting diode, for example, one LED light emitting diode 102 can comprise 1 red LED LED core, 401,1 green LED LED core 402 and 1 blue led LED core 403, and each LED LED core is encapsulated in the same black silicon resin enclosure.
Adopt the silicones shell of black, the zero luminance of black silicon resin or approach zero, the black silicon resin not only has good light transmittance, and the almost not influence of light that silicones sends the LED LED core, therefore, adopt the silicone encapsulation of black, the light that each LED light emitting diode sends is the purest, and transmissivity is the highest.
In order to make in the LED light emitting diode, promptly each the LED LED core in each pixel is luminous each other more concentrated, and each tube core can triangularity be arranged.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (7)
1, a kind of backlight is characterized in that, comprises at least one backboard, a framework, at least one pcb board and be arranged at least one LED luminescence unit of pcb board, a control device;
Described pcb board also is provided with at least one positive source line, a few positive source line, a few holding wire, is connected with a power cathode circuit by at least one holding wire, a positive source circuit between each LED luminescence unit,
Each LED luminescence unit comprises at least one group of LED light emitting diode,
Described pcb board is fixedlyed connected with described backboard, and the exiting surface of each LED luminescence unit and described backboard are arranged on the same side of described pcb board,
Described backboard is fixedly installed on the described framework, and be used for each LED luminescence unit and form dot matrix at described framework,
Described control device is arranged on the described framework; Be used to control each LED luminescence unit.
2, backlight according to claim 1 is characterized in that, each organizes the side that the LED light emitting diode is arranged on described backboard, or is separately positioned on the side of described backboard; Described backboard is provided for fixing the fixed bit of each LED light emitting diode.
3, backlight according to claim 1 is characterized in that, each is organized the LED light emitting diode and comprises at least 1 red LED light emitting diode, at least 1 green LED light emitting diode and at least 1 blue led light emitting diode; Perhaps, arbitrary group of LED light emitting diode comprises at least 1 red LED LED core, at least 1 green LED LED core and at least 1 blue led LED core.
4, backlight according to claim 1 is characterized in that, described control device comprises an inductor, a control module, a gauge tap and at least one control module.
5, backlight according to claim 1, it is characterized in that, one light modulation drive circuit also is set, described light modulation drive circuit comprises light adjusting circuit and drive circuit, every road output of described light adjusting circuit connects by corresponding every road drive circuit with it, and with described LED luminescence unit in each LED light emitting diode in LED light emitting diode homochromy or same position be connected in series mutually.
6, backlight according to claim 5 is characterized in that, described light adjusting circuit is the light modulation special IC, or the dimming function circuit of programming device design; Described drive circuit is integrated power amplifying circuit or discrete amplifying circuit.
7, backlight according to claim 1 is characterized in that, is covered with the rete of one deck black on the described pcb board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920135747U CN201382335Y (en) | 2009-03-16 | 2009-03-16 | LED backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920135747U CN201382335Y (en) | 2009-03-16 | 2009-03-16 | LED backlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201382335Y true CN201382335Y (en) | 2010-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920135747U Expired - Fee Related CN201382335Y (en) | 2009-03-16 | 2009-03-16 | LED backlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201382335Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094672A (en) * | 2018-10-09 | 2019-08-06 | 成都清机科技有限公司 | A kind of courtyard illuminating lamp |
| CN111650776A (en) * | 2020-06-09 | 2020-09-11 | 深圳创维－Rgb电子有限公司 | Backlight module, circuit, television, control method, control device and storage medium |
-
2009
- 2009-03-16 CN CN200920135747U patent/CN201382335Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094672A (en) * | 2018-10-09 | 2019-08-06 | 成都清机科技有限公司 | A kind of courtyard illuminating lamp |
| CN111650776A (en) * | 2020-06-09 | 2020-09-11 | 深圳创维－Rgb电子有限公司 | Backlight module, circuit, television, control method, control device and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Mary Photoelectricity Co., Ltd. Assignor: Shenzhen Huahai Chengxin Electronic Display Technology Co., Ltd. Contract record no.: 2010440020052 Denomination of utility model: LED backlight driving device and driving method thereof Granted publication date: 20100113 License type: Exclusive License Record date: 20100518 |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Shenzhen Mary Photoelectricity Co., Ltd. Assignor: Shenzhen Huahai Chengxin Electronic Display Technology Co., Ltd. Contract record no.: 2010440020052 Date of cancellation: 20120321 |
|
| DD01 | Delivery of document by public notice |
Addressee: Shenzhen Huahai Chengxin Electronic Display Technology Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Yang Cheng Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20140316 |