A kind of modified lumination of light emitting diode unit
The utility model proposes the follow-on lumination of light emitting diode of a kind of improvement unit, this unit has high water resistance, working stability, connect reliable, easy to use, can be used as lighting source, be used to constitute that structure is simple more, cost is lower, the more reliable novel high-power LED lighting fixture of work, as strip light, street lamp, lamp etc. under water; Also can be made into the three primary colors unit, be used for luminous indication structure, large-scale dynamic full-color display etc. is decorated and made to architectural appearance.
China national Department of Intellectual Property application number is that 200520142924.1 patent has proposed a kind of luminescence unit that is made of light emitting diode (LED), effectively solved the problem of driving, heat radiation and the environmental protection of light emitting diode (LED) when being used to make illuminating product, improved LED reliability of applying and environmental suitability greatly, power density is lower, installation is inconvenient, dazzle is still serious, surface problem also attractive in appearance inadequately but this kind unit still exists; Need use barbola work when installing and using, have the problem that production efficiency is not high, manufacturing cost is too high.
Summary of the invention
The purpose of this utility model provides a kind of modified light emitting diode (LED) luminescence unit, this modified light emitting diode (LED) luminescence unit, comprise light emitting diode group, circuit installation base plate, constant-current drive circuit and fin, power outlet, also comprised screw thread mounting connection structure and optics diffusion panel.The circuit structure of unit makes the operating current of each light emitting diode (LED) be equal to or less than load current value, can directly adapt to the variation of external voltage, keeps stable working state; Fin provides reliable heat dissipation path when hermetically-sealed construction is provided, the screw thread mounting structure makes the unit be convenient to be installed on the structural member, producing heat in the time of LED can being worked simultaneously is delivered on the mounting structure, make this kind unit be easier to install and use, reduce thermal-conduction resistance, improved the functional reliability of LED; This kind unit carries out sealing with packing material to light emitting diode and other perishable electrical structure, and all electrical nodes are avoided being exposed in the air, have improved waterproof and corrosion resistance, have improved the functional reliability of circuit, have prolonged service life; The diffusion panel reduces and has improved glare effect, and has better optical characteristics and environmental adaptability, also makes outward appearance more attractive in appearance.
Luminescence unit of the present utility model, comprise one or more light emitting diode, a circuit substrate, at least one group of constant-flow driver spare, a circular heatsink and at least one pair of power supply lead wire, it is characterized in that light emitting diode and constant-flow driver spare are installed in series on circuit substrate, circuit substrate places in the groove of fin, and has a thread bush that is connected with the fin centre bore.The material of thread bush can be the material of copper, aluminium, iron and alloy equal strength height thereof, good heat conductivity.Light emitting diode and constant-current drive circuit can be one group, also can be for being distributed in more than two groups on the circuit substrate, and another group light emitting diode distributes equally ringwise, and every group annexation of two groups of above devices is in parallel.
The luminescence unit that the technical problem that the utility model solved has been to provide a kind of follow-on light emitting diode to form, its feature is that also an end of described thread bush has the shoulder of protrusion, the shoulder cylindrical is an interference fit in the fin centre bore, the central axes of central axis and fin.
The luminescence unit that described follow-on light emitting diode is formed, its feature is that also described fin centre bore has locating slot, and its degree of depth is not higher than the width of thread bush shoulder, and the edge of fin bottom outside can have chamfering hypotenuse and locating slot.
Described lumination of light emitting diode unit is in when assembling, and the shoulder of thread bush is pressed in the centre bore locating slot, the internal circular surfaces of shoulder cylindrical and locating slot formation tight interference fit, the shoulder end face put down in or be lower than the height of fin inner convex platform.Another axial surface of shoulder and fin centralized positioning groove are fitted, make the thread bush axis keep vertical, thereby ensure the rigging position precision, axial pretightening pulling force in the time of also can making simultaneously thread bush bear installation, make fin tight with the applying that the surface is installed, ensure that installation is smooth, the heat that produces when making luminescence unit work simultaneously can rely on the installation base plate conduction.
Cylindrical side, bottom at the fin of described light emitting diode can also be processed with chamfering hypotenuse and locating slot, so that with the connecting structure location of other types with cooperate.
Described light emitting diode power supply lead wire is drawn from the centre bore of thread bush, fills with encapsulant in the gap of lead and thread bush.Power supply lead wire adopts the insulating sheath line, can also have a protective ring in thread bush.
Described modified lumination of light emitting diode unit, its feature also are to have a leaded light diffusion panel.Leaded light diffusion panel uses and can adopt transparent materials such as glass, resin to process, its role is to cooperate the surface of a continuous sealing of formation with fin and light emitting diode, make surface smoothing complete, and the light that the self-luminous diode side penetrates can directly enter LGP, and propagates to all directions in LGP.
Described modified lumination of light emitting diode unit, its feature also is, the inner surface of leaded light diffusion panel has the optics diffusion structure, its role is to the light that enters in the LGP is reflected, the light that makes refraction is from the positive output of LGP, increase the surface brightness of the integral body of LGP, reduce the direct output light and the luminance difference around it of light emitting diode, thereby reach the purpose that alleviates dazzle.Part light is convenient to and other respective outer side edges from the lateral edge output of light guide panel, makes light more evenly or further improve optical effect.
Described modified lumination of light emitting diode unit, its feature are that also leaded light diffusingsurface panel edges has the position, hole that closely cooperates and install with light emitting diode, and light emitting diode places in the hole, and the position of its light output surface is not less than leaded light diffusion panel.The shape of mounting hole site is identical, and its position distribution is corresponding with the position of light emitting diode on circuit substrate.
Described modified lumination of light emitting diode unit, its feature are that also leaded light diffusion panel cooperates position, the hole shape of installing can be square type, rectangle, circle, ellipse with light emitting diode, be convenient to be used with various types of light emitting diodes.
Described modified lumination of light emitting diode unit, its feature are that also leaded light diffusion panel inner surface can have translucent or opaque reflector layer, its role is to improve the reflectivity of light, improve the efficient of light output.Reflector layer can adopt methods such as machining, optics processing, injection mo(u)lding, printing to form.
Described modified lumination of light emitting diode unit, its feature are that also the space between light diffusion panel and the circuit substrate can be encapsulant full packing and partially filled.
The utility model adopts the connected mode of thread bush, make thread bush pass installing hole during installation, use nut fastening, luminescence unit can be installed on quickly and easily install on the base plate at the other end, ensure the flatness and the applying degree of installing simultaneously, improve radiating efficiency.Because thread bush self can conduct heat, and the unit can be installed on the nonmetallic surface, serve as a contrast overleaf with the metallic plate heat radiation, make application more flexible.
Owing to adopted leaded light diffusion panel, improved the uniformity of light, greatly reduce dazzle, make the outward appearance of luminescence unit more attractive in appearance, improved the mechanical strength and the degree of protection of unit simultaneously, the unit can directly be installed at various material surfaces, and need not adopt other safeguard procedures, when being used to make light fixture, can simplify the structure of light fixture greatly, lower the cost of light fixture.
Leaded light diffusion panel matches with the reflection shield of special use or the negative groove of special shape owing to can conducting light export in certain location, can the flexible design light path, effectively improve optical effect, and simplify fitting structure, reduce the cost of light fixture.
Described modified lumination of light emitting diode cells to improve presentation quality, improved degree of protection, realized simple and easy installation, can be installed in the surface and the structure of various materials, under various severe environmental conditions, use, because the surface no longer needs other safeguard structure, can utilize the installing plate surface radiating, can make surface installing type, plane, ultra thin LED lighting easily.Cooperate special-purpose display driver circuit structure, can be made into three look display units, be used for special demonstration (large-scale planar shaped, sphere, curved surface shaped) structure.
Description of drawings
Below in conjunction with schematic diagram the utility model and embodiment are further detailed.
Fig. 1-1 is the schematic diagram of the inside basic structure of described modified luminescence unit.
Fig. 1-2 is the external view that binding thread is installed in the cooperation of described modified luminescence unit.
Fig. 2-1 is for being installed in the schematic diagram that uses on the smooth installation base plate.
Fig. 2-2 is the schematic diagram that described modified luminescence unit cooperates a reflection shield to use.
Fig. 3-1 has the schematic diagram on the substrate that groove is installed for described modified luminescence unit is installed in.
Fig. 3-2 forms the schematic diagram of the groove structure with reflective bevel feature for the recess sidewall of base plate.
The internal structure schematic diagram that Fig. 4 has two groups of constant-current drive circuits and light emitting diode group for described modified luminescence unit.
Fig. 5 is for having the schematic diagram of cylindrical locating slot on the fin of described modified luminescence unit.
The schematic diagram that Fig. 6 installs and uses on non-metal base plate for described modified luminescence unit.
The specific embodiment
Fig. 1-1 is the internal structure schematic diagram of described modified luminescence unit, and Fig. 1-2 is for cooperating the external view of clamp nut.1 is leaded light diffusion panel among the figure, and 2 is light emitting diode, and 3 is fin, and 4 is thread bush, and 5 is circular circuit board, and 6 are the constant current driving element, and 7 is power supply lead wire, and 8 is pad, and 9 is clamp nut.Light emitting diode 2 is installed on the circuit board 5, and the circular array welded and installed by the connection line on pad and the circuit board all or the grouping series connection, is connected with constant-current circuit 6 near the pad that is distributed in the circuit board circumference again, and a group or more can be arranged.Respectively organize the input parallel connection during organize more.
Of the present utility model being characterised in that has a thread bush 4, and an end of thread bush has boss, and the centre bore groove on boss and the fin 3 forms interference and closely cooperates, and the height that its end face of back is not higher than the inner convex platform of fin is installed.Power supply lead wire 7 is drawn in the centre bore of thread bush 4, and the hole internal clearance adopts encapsulant to fill.
Feature of the present utility model also is to have a leaded light diffusion panel 1, have in the position, hole of light-emitting diodes tube shape and distributing position correspondence on the described leaded light diffusion panel, light emitting diode places in the hole, its light-emitting area put down in or be higher than the surface of leaded light diffusion panel 1.Leaded light diffusion panel is that transparent material is made, and inner surface can be manufactured with reflective diffusion structure, and its structure can also can be formed by modes such as printings by heat processing and forming.
The operation principle of described modified luminescence unit is: external power source is incorporated on the circuit half 5 from lead 7, and the light emitting diode group is connected on the power supply by constant-current circuit, and light emitting diode 2 is luminous work by the electric current of a fixed value.The light part that light emitting diode 2 sends is exported by the front through its light output end, the light that send its side enters leaded light diffusion panel 1 and propagates, its propagation path is direct projection, part total reflection between two inner surfaces of panel, the reflection of chance diffusion structure, improved the surface brightness of panel, another part light is from the output of the outer rim side of panel.Owing to reduced output face of light emitting diode direct sunshine and brightness ratio on every side, reached the effect that weakens dazzle.Fill with encapsulant in gap between panel 1 and circuit, and panel has the smooth and protection internal circuit of the flat appearance of making simultaneously to be avoided external mechanical force and impact,
The heat that produces during light emitting diode 2 work is transmitted to pad by pin and is transmitted on fin 4 and the thread bush 4 again, can directly dispel the heat through the each several parts such as surface of outward flange, bottom surface and the thread bush of fin to foreign medium (air, water etc.), ensure that LED is under the suitable operating temperature, and can temperature not too high.
Described luminescence unit is installed on the metal installation base plate uses, can further improve radiating condition, especially when a plurality of described modified luminescence units are concentrated use, can rely on the outer rim heat radiation of described modified luminescence unit simultaneously, conduct heat to metal substrate simultaneously, and rely on the surface radiating of metal substrate, can be made into the light fixture of surface radiating.
Fig. 2-1 is installed on the schematic diagram that uses on the metal base plate for described modified luminescence unit, and 21 is light-emitting area among the figure, and 22 is the modified luminescence unit, and 23 are metal installation base plate, and 24 is pad, and 25 is nut.The thread bush of luminescence unit passes the installing hole on the installing plate 23, with pad nut installation and fastening, the metallic object ground of luminescence unit is closely contacted at the installing plate back side with base plate, and reliable heat transfer increases the efficiently radiates heat area, further improves radiating effect.
Fig. 2-2 is the schematic diagram that described modified luminescence unit uses reflection shield.In 27 be reflection shield, use the reflection shield of given shape, can be with the light of diffusion panel side output through arrangement reflection back to front-reflection output, can improve light utilization, the adjustment distribution curve flux improves optical effect.Reflector can be metal or nonmetallic materials manufacturing, and its reflecting surface can have decorative pattern, also can be smooth surface.
Fig. 3-1 is installed on schematic diagram on the base plate of tool shaping groove for described modified luminescence unit, and 31 be light-emitting area, and 32 is the luminescence unit metallic object, and 33 is pad, and 34 is nut, and 35 is thread bush, and 36 is the base plate with groove.Described luminescence unit, the chamfering inclined-plane that its metal outer rim has, can be easily and groove fit with knuckle and hypotenuse with various technological formings, its light-emitting area 31 can be lower than or put down the shoulder surface in base plate 36, make outward appearance more attractive in appearance, or rely on negative to form reflective inclined-plane, and further improve the output optical characteristics, improve light output efficiency.
Fig. 3-2 is that described modified luminescence unit is installed on the schematic diagram in the groove with optical characteristics, 37 for directly processing base plate the groove of given shape, luminescence unit is directly installed on bottom portion of groove, and the reflective structure that utilizes recess sidewall to form forms the optical effect that needs.
Fig. 4 is the structure chart of unit with light emitting diode of two groups of annular array, and this structure can make the quantity of light emitting diode be multiplied, and luminous power is further strengthened, and brightness becomes to improve.41 is luminescent panel among the figure, and 42 is light emitting diode, and 43 is circuit board, and 44 is constant flow element, and 45 is fin, and 46 is thread bush, and 47 is power supply lead wire.Wherein the structure of fin 45 is improved, and its inner surface also has outer annular recess except that having original inner annular recess, matches with the installation site of the LED that increases, realizes safe insulation and efficiently radiates heat.
Fig. 5 is the fin schematic diagram with outside locating slot, and wherein 51 is original fin, and 52 for the outside fix groove, its role is to match with outside loop configuration, make install smooth, the location is easy, can realize Fast Installation.
Fig. 6 is installed in the schematic diagram on the composite bottom board of nonmetallic surface for luminescence unit.61 is light-emitting area among the figure, and 62 is luminescence unit, and 63 is the backing metallic plate, and 64 is pad, and 65 is nut, and 66 is power supply lead wire, and 67 is nonmetal panel.The thread bush of luminescence unit 62 passes the through hole on the composite bottom board, adopts pad 64 and nut 65 fastening.The heat that luminescence unit 62 produces during work is delivered on the metal backing 63 by thread bush and nut 65, pad 64, strengthens heat radiation by metal backing 63.Non-metal board 67 can adopt various ornamental strong materials, but adopting process glass, coated glass, decorative board, plastic plate etc. can be made into ornamental extremely strong LED light fixture product.