A kind of LED circuit board
Technical field
The utility model relates to LED wiring board art, particularly relates to a kind of LED circuit board.
Background technology
LED (LightEmittingDiode), light-emitting diode, be a kind of solid-state semiconductor device, it directly can be converted into light electricity.The heart of LED is the wafer of a semiconductor, and one end of wafer is attached on a support, and one end is negative pole, and the other end connects the positive pole of power supply, makes whole wafer by epoxy encapsulation.Semiconductor wafer is made up of two parts, and a part is P type semiconductor, and inside it, occupy an leading position in hole, and the other end is N type semiconductor, at this side mainly electronics.But time these two kinds of semiconductors couple together, between them, just form one " P-N junction ".When electric current acts on this wafer by wire time, electronics will be pushed to P district, and in P district, electronics is with hole-recombination, then will send energy with the form of photon, the principle of LED luminescence that Here it is.And the wavelength of light i.e. the color of light, be determined by the material forming P-N junction.
Practical and the commercialization of high performance lED, makes lighting technology face a new revolution.The pixel lamp be made up of red, blue, the green three-color LED of multiple super brightness not only can send the continuously adjustable various coloured light of wavelength, but also the white light that brightness can reach tens to one hundred candle light can be sent become lighting source, for incandescent lamp and the LED solid lighting lamp of identical luminosity, the power consumption of the latter only accounts for the former 10%-20%.
The white light LEDs major part of current production is made by covering the faint yellow fluorescent coating of one deck on blue-ray LED, and this yellow phosphor is normally made by being blended in a kind of dense adhesive after the yag crystal mixing cerium is clayed into power.When LED chip sends blue light, some blue light just can be converted to the wider light being mainly yellow of a spectrum by this crystal very efficiently, because gold-tinted can stimulate ruddiness in naked eyes and green glow acceptor, then mix the blue light of LED itself, make it seem just as white light.
Existing LED is generally be directly installed on mounting panel, mounting panel is generally laminated structure, comprise three layers: the line layer being used for connecting up under the heat dissipating layer being used for dispelling the heat, the insulating barrier being used under heat dissipating layer insulating, insulating barrier, wherein heat dissipating layer is generally aluminium foil or aluminum alloy sheet; Line layer is generally Copper Foil and makes, and is used for doing configuration.LED is arranged on heat dissipating layer, welds with line layer.The mounting panel heat dispersion of the LED of this type depends on the thermal conductance index of insulating barrier to a great extent, and the thermal conductance index of insulating barrier is often not high, causes the heat dispersion of whole LED installation strip not good.
A kind of LED circuit board is proposed in " a kind of LED circuit board " (application number 2015103208701) application of the submit of the applicant, comprise the many substrate bands be arranged in parallel, every bar substrate band comprises the first wire, the second wire and thermal wire, wherein said first wire, the second wire and thermal wire be arranged in parallel, substrate band longitudinal direction compartment of terrain is provided with luminous zone and radiating area, in luminous zone, the first wire is symmetrically arranged inverted "L" shaped, and the thermal wire of radiating area has the arc protruded downwards; Described luminous zone is provided with LED seat, and LED seat top is provided with LED lamp cup, and described first wire, the second wire and thermal conductive wire through described LED seat, and are positioned at the bottom of described Lamp cup.The first wherein said wire and the second wire are used for powering to LED, and thermal wire is for exporting to fin by heat.
Above-mentioned application is in parallel after can only realizing the first series connection of LED, and can not realize first rear series connection in parallel; Meanwhile, namely the material of described thermal wire is identical with the material of the second wire with described first wire is all metal, may be used for conduction completely and participates in forming LED circuit board.The existing heat conduction function of above-mentioned thermal wire, also have conduction thus the function of formation wiring board, we are called thermoelectric (al) wire.
Utility model content
For overcoming the deficiencies in the prior art, simultaneously as the improvement of above-mentioned application, the utility model provides a kind of LED circuit board, comprise the power line be arranged in parallel successively, first thermoelectric (al) wire, second thermoelectric (al) wire, also comprise multiple reinforcements of the vertical direction being arranged on described parallel direction, described reinforcement connects described power line, first thermoelectric (al) wire, second thermoelectric (al) wire, described first thermoelectric (al) wire and the part of the second thermoelectric (al) wire between two reinforcements closed on are provided with radiating area and luminous zone, reinforcement is for connecting described power line, first thermoelectric (al) wire, the part of the second thermoelectric (al) wire and described first thermoelectric (al) wire, the part of the second thermoelectric (al) wire between two reinforcements closed on disconnects at ad-hoc location.
As the improvement of such scheme, described second thermoelectric (al) wire is other is also provided with an independent current source line abreast, and described independent current source line is connected with described second thermoelectric (al) wire by described reinforcement.
As the improvement of such scheme, the second thermoelectric (al) wire in described luminous zone is symmetrically arranged inverted "L" shaped.
As the improvement of such scheme, the first thermoelectric (al) wire in described luminous zone is symmetrically arranged inverted "L" shaped.
As the improvement of such scheme, the first thermoelectric (al) wire of described radiating area has the arc protruded downwards.
As the improvement of such scheme, the second thermoelectric (al) wire of described radiating area has the arc protruded downwards.
As the improvement of such scheme, the curved bottom shape of described downward protrusion is flat.
Compared with prior art, LED circuit board disclosed in the utility model is the disposable LED circuit board of metallic plate, and this wiring board is in parallel after not only realizing the first series connection of LED circuit, also the rear series connection first in parallel of LED circuit be can realize, conduction and heat conduction function also incorporated simultaneously; LED can straight forming in the circuit board; Heat can directly distribute by the radiating area of thermoelectric (al) wire, is also connected to other by modes such as welding and has on the parts of heat sinking function, makes the heat dispersion of wiring board better.
Accompanying drawing explanation
In order to be illustrated more clearly in embodiment of the present utility model, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only an embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a specific embodiment of the present utility model;
Fig. 2 is the structural representation before ad-hoc location disconnects in the specific embodiment in Fig. 1;
In figure: 1-power line; 2-first thermoelectric (al) wire; 3-second thermoelectric (al) wire; 4-independent current source line; 5-reinforcement; 6-luminous zone; 7-radiating area.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
See Fig. 1, a kind of LED circuit board of the utility model, comprise the power line 1 be arranged in parallel successively, first thermoelectric (al) wire 2, second thermoelectric (al) wire 3, also comprise multiple reinforcements 5 of the vertical direction being arranged on described parallel direction, described reinforcement 5 connects described power line 1, first thermoelectric (al) wire 2, second thermoelectric (al) wire 3, described first thermoelectric (al) wire 2 and the part of the second thermoelectric (al) wire 3 between two reinforcements 5 closed on are provided with radiating area 7 and luminous zone 6, reinforcement 5 is for connecting described power line 1, first thermoelectric (al) wire 2, the part of the second thermoelectric (al) wire 3 and described first thermoelectric (al) wire 2, the part of the second thermoelectric (al) wire 3 between two reinforcements 5 closed on disconnects at ad-hoc location.
Described luminous zone 6 is used for mounted LED lamp.Can weld or fit between first thermoelectric (al) wire 2 of the bottom of described LED lamp cup 9 and the 3rd thermoelectric (al) wire 3 LED chip, then injection fluorescent material and mould top glue mixture are shaped to LED lens, and the mixture of LED chip, fluorescent material and mould top glue constitutes LED lamp bead.Power line 1, first thermoelectric (al) wire 2 and the 3rd thermoelectric (al) wire 3 and reinforcement 5 constitute LED circuit board, by controlling described power line 1, first thermoelectric (al) wire 2 and the 3rd thermoelectric (al) wire 3 and the break-make of reinforcement 5 in some position, the circuit of series connection after in parallel or first in parallel after can forming the first series connection of required multiple LED.
In order to better the utility model is described, the state of LED circuit board shown in Fig. 1 before ad-hoc location does not disconnect as shown in Figure 2.What show in FIG is after two LED parallel connections, then the situation of connecting with two LED of parallel connection below.Those skilled in the art also can not need to pay performing creative labour, the circuit of connecting with multiple LED of parallel connection below again after can obtaining multiple LED parallel connection, equally also can to obtain after the series connection of multiple LED again with the circuit of multiple LED parallel connections of connecting below.
In an embodiment of the present utility model, described second thermoelectric (al) wire 3 is other is also provided with an independent current source line 4 abreast, and described independent current source line 4 is connected with described second thermoelectric (al) wire 3 by described reinforcement 5.When being powered to described LED circuit board by a power-supply controller of electric, if single-ended power, then only the both positive and negative polarity of power-supply controller of electric need be connected to power line 1 and the first thermoelectric (al) wire 2 or the second thermoelectric (al) wire 3; If both end power supplying, then need the electric current of the other end to be caused the one end with power-supply controller of electric by independent current source line 4.
The structure of described power line 1, first thermoelectric (al) wire 2, second thermoelectric (al) wire 3, independent current source line 4 and reinforcement 5 is metallic plate integral one-step molding, and the mode of processing can be punching press, also can be wheel hub roll-in.The material of metallic plate is metal or its alloy of conduction arbitrarily.
The second thermoelectric (al) wire in described luminous zone and the first thermoelectric (al) wire be arranged in parallel, usual interval is therebetween larger, LED chip can be installed in the future between second thermoelectric (al) wire and the first thermoelectric (al) wire of described luminous zone, and LED chip is usually smaller, in order to weld/fitting LED chip better, usually the second thermoelectric (al) wire 3 in described luminous zone 6 is set to symmetrically arranged inverted "L" shaped, namely protrudes a part with closer to the first thermoelectric (al) wire 2.Also can be simultaneously the first thermoelectric (al) wire 2 in described luminous zone 6 for symmetrically arranged inverted "L" shaped, or the first thermoelectric (al) wire 2 in luminous zone 6 and the second thermoelectric (al) wire 3 are symmetrically arranged inverted "L" shaped simultaneously.
First thermoelectric (al) wire 2 of described radiating area 7 and the second thermoelectric (al) wire 3 are used for dispelling the heat, and LED can produce a large amount of heats in the process of luminescence, and heat is distributed by the first thermoelectric (al) wire 2 and the part of the second thermoelectric (al) wire 3 in radiating area 7.And distribute heat in air only by radiating area 7 or inadequate often in other medium of being in contact with it, sometimes need radiating area 7 to be connected on other thermal component, with distribute heat quickly.At this moment, the first thermoelectric (al) wire 2 in radiating area 7 and/or the second thermoelectric (al) wire 3 can be provided with the arc having and protrude downwards, to fit on other described thermal component.Meanwhile, because the material of the first thermoelectric (al) wire 2 and the second thermoelectric (al) wire 3 is metal, its heat conductivility is better, and can be welded direct on other thermal component, and does not need to be fitted on other thermal component by insulating barrier.
In another preferred embodiment of the present utility model, the curved bottom shape of the first thermoelectric (al) wire 2 in above-mentioned radiating area 7 and/or the downward protrusion of the second thermoelectric (al) wire 3 is set to flat.When being set to the curved weld of the downward protrusion of the first thermoelectric (al) wire 2 in the radiating area 7 of flat and/or the second thermoelectric (al) wire 3 or fitting on other thermal component, its contact area is larger, heat-conducting effect is better, can not only be dispelled the heat by other thermal component simultaneously, itself also can directly distribute heat in air or in other medium of being in contact with it.
The above is preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection range of the present utility model.