CN203743914U - LED lamp - Google Patents

Abstract

The utility model relates to the field of illumination lamps, in particular to an LED lamp. The LED lamp comprises a mounting frame and an LED light emitting component, the LED light emitting component is arranged in the mounting frame, the LED light emitting component comprises a plurality of sets of LED modules and electric connecting wires after IP protection processing, and the LED modules are connected through the electric connecting wires. A connecting assembly part is movably connected to the mounting frame through a connector. The LED lamp has the advantages that the structure is novel, the LED modules can be combined freely, the luminance and heat dispersion performance can be adjusted freely, and the waterproofness is good.

Description

A kind of LED light fixture

Technical field

The utility model relates to field of illuminating lamps, especially relates to a kind of LED light fixture.

Background technology

LED light fixture is because the advantage of its energy-conserving and environment-protective is widely used, LED module is most important parts in LED light fixture, it mainly comprises radiating block, pcb board and LED, and pcb board is arranged on radiating block, and the heat that LED work produces reaches radiating block by pcb board and dissipates fast.The deficiency that existing LED light fixture exists is that LED module can not be changed, once just cannot adjust the shape of LED module and the size of power after product shaping, independent assortment uses quickly and easily.

Summary of the invention

Goal of the invention of the present utility model is the deficiency existing in order to solve above-mentioned existing LED light fixture, and a kind of novel structure is provided, and LED module can independent assortment, the LED light fixture that heat dispersion and water resistance are good.

To achieve these goals, the utility model has adopted following technical scheme:

A kind of LED light fixture, comprise installing frame and LED luminescence component, LED luminescence component is arranged in installing frame, and LED luminescence component comprises many group LED modules and the electric connection line through IP protective treatment, many group LED modules are connected by electric connection line, and LED module is movably arranged in installing frame; LED module comprises LED, pcb board and radiating subassembly, and LED and pcb board are connected as a single entity, and pcb board is fixed on radiating subassembly; Radiating subassembly comprises aluminum heat radiation rack, heat-conducting layer, assembles part and polylith heat sink, aluminum heat radiation rack is provided with multiple heat sink installing holes that are arranged in parallel, heat sink is inserted in the heat sink installing hole on aluminum heat radiation rack, by the heat-conducting layer on aluminum heat radiation rack, heat sink is positioned, pcb board is fixed on the bottom surface of aluminum heat radiation rack; Aluminum heat radiation rack cross section is square, and aluminum heat radiation rack is provided with and assembles part, assembles part and aluminum heat radiation rack is connected as a single entity; Assemble part and be provided with electrical interface, pcb board is provided with the energising interface that can be communicated with electrical interface, and aluminum heat radiation rack is provided with threading position, and threading bit position is between corresponding electrical interface and energising interface; Assembling part is movably connected on installing frame by connector.

As preferably, aluminum heat radiation rack cross section is square, and assembling part is 4, each all middles in every limit, position that assemble part; The electrical interface that is not used in connection electric connection line and connector seals by capping; Connector is L shaped metallic interconnect.

As preferably, installing frame comprises housing and inside casing, and inside casing is movably arranged in housing by installation shaft, and inside casing longitudinally rotates in housing along installation shaft; LED module is movably arranged in inside casing by connector, and what LED module was horizontal rotates along inside casing.

As preferably, the quantity of LED module is between 2-30 group; IC chip on pcb board, by operating current and the work calories of pulse width modulation control LED, carries out the adjustment of voltage stabilizing and constant current by changing dutycycle; LED brightness regulation module is set on pcb board, and pcb board is provided with 4 the energising interfaces that all can control LED switch and regulate LED brightness.

As preferably, the hood-shaped shape of lens face is the square mating with aluminum heat radiation rack bottom surface, and lens face shield middle part convexes to form cavity volume downwards with respect to edge, and the edge of lens face shield is screwed on the edge of square fixed panel bottom; The edge of lens face shield bottom is provided with the mount pad of multiple regularly arranged and downward protrusions, and mount pad and lens face shield are connected as a single entity, and screw passes mount pad and is fixed on aluminum heat radiation rack, and lens face shield is provided with the decoration that screw outer end is sealed; On lens face shield, be provided with aluminum heat radiation rack junction the groove that holds water-tight circle, water-tight circle is stuck in groove, the inner side of the position of water-tight circle in screw; Lens face shield is provided with 12 lens installing holes, 12 airtight being fitted on lens installing hole of lens, and 12 lens arrangement become 4 curved lenses bands that length is identical, and every curved lenses band is formed by 5 lens arrangement; On pcb board, the quantity of LED and arrangement position mate with lens, each lens directly over a LED is set, 12 LED are arranged in 4 arc LED luminous zones that length is identical.

As preferably, housing is provided with handle or installing tache.

As preferably, be, on the two ends of electric connection line, waterproof seal plug is set through the electric connection line of IP protective treatment.

As preferably, aluminum heat radiation rack top is provided with heat radiation fixed head, and heat radiation fixed head bottom is connected as a single entity with aluminum heat radiation rack top, and the top of heat radiation fixed head is provided with connecting thread mouth; Heat sink cross section is L-shaped, and heat sink is connected as a single entity and is formed by long slab and short slab, and long slab is through the heat sink installing hole on aluminum heat radiation rack.

As preferably, LED module also comprises lens and lens face shield, and lens are airtight to be arranged on lens face shield, and lens face shield is fixed on radiating subassembly, and is provided with water-tight circle between lens face shield and radiating subassembly.

As preferably, at least one threading position is threading via hole, and remaining threading position is to be transparent threading screens groove by impact, is connected on the electrical interface corresponding with threading via hole through the electric connection line of IP protective treatment.

Adopt a kind of LED light fixture of technique scheme, LED luminescence component is arranged in installing frame, many group LED modules are connected by the electric connection line through IP protective treatment, electrical interface is connected by threading position with energising interface, electric connection line through IP protective treatment is connected on the electrical interface corresponding with threading via hole, rational in infrastructure, by having assembled energising Interface realization on part and pcb board on LED module indwelling expansion edge on fixed panel, realize different purposes, the Combination conversion of different capacity class, to facilitate consumer's multipurpose requirement, be that LED light fixture can dock combination by organizing LED module freely, operation is very easy to increase or reduce LED module, simultaneously assembling part and can fix for the installation of LED module in docking position not, novel structure, easy to use.Many group LED modules are connected by the electric connection line through IP protective treatment, and IP barrier propterty is good.By the heat-conducting layer on aluminum heat radiation rack, heat sink is positioned, heat dispersion and heat conductivility are all good, heat-conducting layer fixing for heat sink position also except heat conduction, heat sink is inserted in the heat sink installing hole on aluminum heat radiation rack, and it is that heat dispersion can regulate voluntarily that the quantity of heat sink can be selected voluntarily.LED and pcb board are connected as a single entity, and to lower Power supply requirement and to dwindle unit volume, have both effectively lowered the requirement to Power supply performance, have compressed again volumetric spaces.In sum, the advantage of this LED light fixture is novel structure, and LED module can independent assortment, and brightness and heat dispersion can freely be adjusted, good waterproof performance.

Brief description of the drawings

Fig. 1: the structural representation of the utility model embodiment 1.

Fig. 2: the structural representation of the utility model embodiment 2.

Fig. 3: the structural representation of the utility model embodiment 3.

Fig. 4: the exploded perspective view of LED module in the utility model embodiment.

Fig. 5: the schematic diagram of radiating subassembly on LED module in the utility model embodiment.

Fig. 6: in the utility model embodiment aluminum heat radiation rack and on assemble the schematic diagram of part.

Fig. 7: the assembling schematic diagram of pcb board and LED on LED module in the utility model embodiment.

Fig. 8: lens face shield schematic diagram one on LED module in the utility model embodiment.

Fig. 9: lens face shield schematic diagram two on LED module in the utility model embodiment.

Detailed description of the invention

Make a detailed explanation below in conjunction with Fig. 1-9 pair detailed description of the invention of the present utility model.

Embodiment 1

A kind of LED light fixture as shown in Fig. 1, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, comprise installing frame 101 and LED luminescence component 102, LED luminescence component 102 is arranged in installing frame 101, LED luminescence component 102 comprises many group LED modules 9 and the electric connection line 8 through IP protective treatment, many group LED modules 9 are connected by electric connection line 8, and LED module 9 is movably arranged in installing frame 101.

LED module 9, mainly comprises LED3, pcb board 2, lens 4, lens face shield 6 and radiating subassembly 1.LED3 is arranged on pcb board 2, and specifically LED3 one is connected on pcb board 2, to lower Power supply requirement and to dwindle unit volume, has both effectively lowered the requirement to Power supply performance, has compressed again volumetric spaces.IC chip 22 on pcb board 2, by operating current and the work calories of pulse width modulation control LED, carries out the adjustment of voltage stabilizing and constant current by changing dutycycle.

Radiating subassembly 1 is mainly by aluminum heat radiation rack 11, heat-conducting layer 14, 4 assemble part 12 and polylith heat sink 13 forms, aluminum heat radiation rack 11 is provided with multiple heat sink installing holes 111 that are arranged in parallel, heat sink 13 is inserted in the heat sink installing hole 111 on aluminum heat radiation rack 11, specifically aluminum heat radiation rack 11 end faces are provided with two heat radiation fixed heads 15, two heat radiation fixed head 15 bottoms and aluminum heat radiation rack 11 end faces are connected as a single entity, two heat radiation fixed heads 15 are along the Central Symmetry setting of aluminum heat radiation rack 11 bottom surfaces, the effect of heat radiation fixed head 15 is both can dispel the heat, the installation that can also be used for whole LED module is fixed.Heat sink cross section is L-shaped, and heat sink 13 is connected as a single entity and is formed by long slab 131 and short slab 132, and long slab 131 is through the heat sink installing hole 111 on aluminum heat radiation rack 11, and short slab 132 is stuck on the aluminum heat radiation rack 11 of heat sink installing hole 111 belows.Pcb board 2 is fixed on the bottom surface of aluminum heat radiation rack 11, by the heat-conducting layer 14 on aluminum heat radiation rack 11, heat sink 13 is positioned, the effect of heat-conducting layer 14 except heat conduction also for the position of heat sink 13 is fixed, the structure of heat-conducting layer 14 has two kinds, one is to be similar to heat-conducting silica gel sheet, between the heat sink 13 of position on pcb board 2 and aluminum heat radiation rack 11, heat-conducting layer 14 is pressed on short slab 132 position of heat sink 1 is fixed, another kind is to be similar to heat-conducting glue, position is between short slab 132 end faces and aluminum heat radiation rack 11 bottom surfaces, by heat-conducting glue, short slab 132 is cemented on aluminum heat radiation rack 11.User can freely select the quantity of heat sink 13 and then regulate voluntarily the performance of heat radiation.

Aluminum heat radiation rack 11 cross sections are square, the edge on every limit on aluminum heat radiation rack 11 tops is equipped with one and assembles part 12, assembling part 12 is 4, each all middles in every limit, position that assemble part 12, and assemble part 12 and be connected as a single entity with aluminum heat radiation rack 11.

Each assembling on part 12 is equipped with through electrical interface 121, and electrical interface 121 is through IP protective treatment, and pcb board 2 is provided with 4 positions and mates corresponding energising interface 21 with the electrical interface 121 assembling on part 12, and aluminum heat radiation rack 11 is provided with 4 threading positions.LED brightness regulation module 23 is set on pcb board 2,4 energising interfaces 21 on pcb board 2 are all the energising interfaces that can control LED switch and regulate LED brightness, any energising interface 21 of connecting on a pcb board 2 all can be controlled switch and the brightness of all LED3 on pcb board 2, easy to use.

Aluminum heat radiation rack 11 is provided with 4 threading positions, and threading bit position is between electrical interface 121 and energising interface 21.In 4 threading positions, at least one threading position is threading via hole 1121, the interior electric connection line 8 arranging through IP protective treatment of electrical interface 121 directly at least one threading via hole 1121, connect 8 on the electrical interface corresponding with threading via hole 1,121 121 through the electric connection line of IP protective treatment, electric connection line 8 through IP protective treatment is, on the two ends of electric connection line 8, waterproof seal plug is set, waterproof seal plug seals electrical interface 121, electrical interface 121 is rounded, waterproof seal plug is cylindrical, and dismounting is used very convenient.Remaining threading position is to be transparent threading screens groove 1122 by impact.Need to increase LED module time, can adopt the part 12 that assembles at threading via hole 1121 places to dock, remaining assembles part 12 and does not use and therefore do not need perforation as connector, adopting is the structure of transparent threading screens groove 1122 by impact, can effectively improve the grade that dustproof and waterproof performance has improved IP protection, be that the intensity of transparent threading screens groove 1122 is far below the intensity of aluminum heat radiation rack 11 around by impact, suitably impact penetrable, just become threading via hole 1121 through overpenetrated screens groove 1122, when consumer need to increase LED module 9 docking location, puncture voluntarily and can use again, rational in infrastructure, easy to use.

Assembling part 12 is movably connected on installing frame 101 by connector 102, connector 102 is L shaped metallic interconnects, be that LED module 9 is movably connected on installing frame 101 by connector 102, LED module 9 can rotate along installing frame 101, has realized the adjustable of LED luminescence component irradiating angle.The both sides that assemble electrical interface 121 on part 12 are respectively equipped with connecting hole 122, and connecting hole 122 is for assembling L shaped metallic interconnect.

On the fixing aluminum heat radiation rack 11 of lens face shield 6, and be provided with water-tight circle 5 between lens face shield 6 and aluminum heat radiation rack 11.Lens face shield 6 shapes are the squares that mate with aluminum heat radiation rack 11 bottom surfaces, lens face shield middle part 61 convexes to form cavity volume downwards with respect to edge, the edge of lens face shield 6 is fixed on by screw 66 on the edge of aluminum heat radiation rack 11 bottoms, specifically the edge of lens face shield 6 bottoms is provided with the mount pad 62 of multiple regularly arranged and downward protrusions, mount pad 62 is connected as a single entity with the edge of lens face shield 6, screw 66 is fixed on aluminum heat radiation rack 11 through mount pad 62, while adjusting LED3 or lens 4, just lens face shield 6 need to be pulled down, therefore the fixing mode of screw 66 is the most applicable, for the fastness that ensures to install, therefore adopted respective outer side edges screw 66 fixing of mount pad 62, especially but user need to adjust the quantity of heat sink 13 and then adjust when heat dispersion, select the fixed form of screw 66 the most easily dismantle and assemble.On lens face shield 6, be provided with aluminum heat radiation rack 11 junctions the groove 65 that holds water-tight circle, water-tight circle 5 is stuck in groove 65, and the effect that water-tight infiltrates can better be played in the inner side of the position of water-tight circle 5 in screw 66.In order to increase aesthetics, on lens face shield, the decoration that screw outer end is sealed can be set.

Lens 4 are airtight to be arranged on lens face shield 6, lens face shield 6 is provided with 12 lens installing holes 64,12 airtight being fitted on lens installing hole 64 of lens 4,12 lens 4 are arranged in 4 curved lenses bands that length is identical, article 4, curved lenses band joins end to end, and every curved lenses band forms by 5 lens arrangement.On pcb board 2, the quantity of LED3 and arrangement position mate with lens 4, each lens 4 directly over a LED3 is set, 12 LED3 are arranged in 4 arc LED luminous zones that length is identical, every arc LED luminous zone is arranged and is formed by 5 LED3.Above-mentioned 12 LED3 are low-voltage direct LED.For realizing the unification of variety classes LED alignment placement, 12 low-voltage direct LED form Designs have been become 4 arc LED luminous zones by the LED module of this patent, so that 4 high-voltage LEDs in equidistant arrange evenly can be for replacing above-mentioned low-voltage direct LED, the low-voltage LED of generally applying by existing market is done on the basis of alignment placement, consider that thereby changing the LED relation of arranging with plus-minus connection wire realizes the layout that is suitable for high direct voltage LED work, in the time that needs are used high direct voltage LED instead, enough with 4 LEDs, use this 4 LEDs in impartial position, all the other are with pin leads or wire UNICOM circuit, for example every pack module 48V/DC power supply, drive 12 3V low-voltage direct LED that single power is 1W, its pass of arranging is 12 strings, be the 54V high-voltage LED of 3W while driving with alternating current 220V or direct current 220V when using single power instead, the quantity of every pack module LED has just become 4, and this 4 LEDs must conspire to create a string, it is suitable that its position also must be placed, otherwise, will affect the attractive in appearance and illumination of layout evenly.

Under different voltage and different capacity class, the width of Copper Foil wire and spacing requirement are different, power hour, and because its load capacity is little, Copper Foil wire can be more carefully; When voltage is low, because of pressure reduction little, wire pitch also can be less, for accomplishing the compatibility of same pcb board to different voltage and different capacity class, the LED module special design of this patent width and the gap of Copper Foil wire, the current-carrying capacity of Copper Foil wire is relevant with the thickness of Copper Foil, conductor width and operating temperature etc., and creep age distance is relevant with the dielectric constant of material with the spacing of wire.It is the conventional pcb board of 1 ounce for copper thickness, when operating temperature is 20 degree, when Copper Foil conductor width is 0.254mm, can bear the electric current of about 1.2A, the electric current that for the benefit of multimode connection in series-parallel realizes the above power of whole lamp 120W bears, its the narrowest width of Copper Foil wire that the LED module of this patent and power supply are connected is all between 2.5mm-10mm, can guarantee to bear the electric current of 4.5A left and right, as for creep age distance, to ordinary electronic circuit, it is less demanding, be greater than 0.2mm enough, the creep age distance of this patent is 0.8mm, enough surpluses are reserved, effectively avoid increasing the current overload causing and effectively having prevented because using AC LED and HVDC LED to cause the load voltage creepage risk producing that raises because of module parallel combination.Above-mentioned special design has realized the compatibility imagination of the shared one group of lens outer cover of the shared a pcb board of variety classes LED, has facilitated production, has also reduced material cost.

Above-mentioned electrical interface 121 is through IP protective treatment, IP protective treatment refers to the processing that meets IP degree of protection, the IP protective treatment mode of electrical interface 121 is a lot, the conventional water-tight packing ring of for example setting up around electrical connector, or at the outer closing cap that electrical interface 121 is sealed that arranges of electrical interface 121, and above-mentioned be the IP protective treatment mode that transparent threading screens groove 1122 structures all belong to electrical interface 121 by impact, adopt the LED module IP degree of protection of technique scheme at least to reach 66.Above-mentioned electrical interface 121 is not used in while connecting through the electric connection line of IP protective treatment and connector, and its opening generally seals up with capping, and the electrical interface not using 121 of especially corresponding threading via hole 1121 need to use capping sealing.

In above-mentioned, 4 threading positions can be all threading via holes 1121, can be partly also threading via holes 1121.The all position preventing dust water-based of LED module in above-described embodiment is all very good, and IP degree of protection is high, meets the condition of outdoor use completely, does not need to increase the shell that keeps off the rain and just can directly use out of doors.Realize on LED module surrounding indwelling expansion edge by the energising interface 21 on the pcb board 2 that assembles part 12 and mate with it of aluminum heat radiation rack 11 bottom surface side edges, realize the Combination conversion of different purposes, different capacity class, to facilitate consumer's multipurpose requirement, the quantity that can increase easily LED module to be to increase brightness, simultaneously assembling part 12 and can fix for the installation of LED module in docking position not.

When use, two adjacent groups LED module 9 is connected by the electric connection line 8 through IP protective treatment, and the pcb board 2 on two groups of LED modules 9 is realized electrical connection by electric connection line 8, can control the use of whole LED light fixture by any one group of pcb board 2.By switch and the brightness regulation of the IC chip controls LED3 on pcb board 2, the light scioptics 4 that LED3 sends penetrate, the heat producing when LED3 work is dissipated by radiating subassembly 1, IC chip 22 on pcb board 2 is by the operating current of pulse width modulating technology control LED and the work calories of LED, carry out the adjustment of voltage stabilizing and constant current by changing dutycycle, realize voltage stabilizing and constant current by pulse width modulating technology PWM, by IC chip monitoring LED operating temperature, realize temperature protection function, in the time that internal temperature exceedes setting index, automatic reduction electric current ensures the stable work in work of LED, implement voltage stabilizing by the method that changes dutycycle, effectively lower the fluctuation of voltage, improve LED constant current and driven effect, specifically be integrated with overheat protector device at IC chip internal, even connected triode conducting after its temperature sensor is experienced temperature to exceed a certain value, lower operating current by shunting, thereby realize desuperheat effect, pulse width modulating technology PWM regulates the biasing of transistor base or metal-oxide-semiconductor grid and then realizes transistor or a kind of analog control mode of metal-oxide-semiconductor ON time change according to load change, and this mode can make the output voltage of power supply remain constant in the time of operation conditions change.

Embodiment 2

A kind of LED light fixture as shown in Fig. 2, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, comprises installing frame 101 and LED luminescence component 102, and LED luminescence component 102 is arranged in installing frame 101, and the structure of LED luminescence component 102 is identical with embodiment 1.

Installing frame 101 comprises housing 1012 and inside casing 1011, inside casing 1011 is movably arranged in housing 1012 by installation shaft, inside casing 1011 along installation shaft in the interior longitudinal rotation of housing 1012, LED module 9 is movably arranged in inside casing 1011 by connector 102, what LED module 9 was horizontal rotates along inside casing 1011, has realized LED module 9 four directions all rotatable.Installing tache 1013 is set on housing 1012, and LED light fixture just becomes Ceiling light, can be arranged on furred ceiling and use.

Embodiment 3

A kind of LED light fixture as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, comprises installing frame 101 and LED luminescence component 102, and LED luminescence component 102 is arranged in installing frame 101, and the structure of LED luminescence component 102 is identical with embodiment 1.

Installing frame 101 comprises housing 1012 and inside casing 1011, inside casing 1011 is movably arranged in housing 1012 by installation shaft, inside casing 1011 along installation shaft in the interior longitudinal rotation of housing 1012, LED module 9 is movably arranged in inside casing 1011 by connector 102, what LED module 9 was horizontal rotates along inside casing 1011, has realized LED module 9 four directions all rotatable.Handle 1013 is set on housing 1012, and LED light fixture just can move use.

Above-described embodiment is only preferably embodiment of this patent, and for example the quantity of LED module 9 can increase arbitrarily, for example 3 groups, 4 groups, 5 groups, 6 groups etc., and generally within 30 groups.

Claims (10)

1. a LED light fixture, comprise installing frame and LED luminescence component, LED luminescence component is arranged in installing frame, it is characterized in that LED luminescence component comprises many group LED modules and the electric connection line through IP protective treatment, many group LED modules are connected by electric connection line, and LED module is movably arranged in installing frame; LED module comprises LED, pcb board and radiating subassembly, and LED and pcb board are connected as a single entity, and pcb board is fixed on radiating subassembly; Radiating subassembly comprises aluminum heat radiation rack, heat-conducting layer, assembles part and polylith heat sink, aluminum heat radiation rack is provided with multiple heat sink installing holes that are arranged in parallel, heat sink is inserted in the heat sink installing hole on aluminum heat radiation rack, by the heat-conducting layer on aluminum heat radiation rack, heat sink is positioned, pcb board is fixed on the bottom surface of aluminum heat radiation rack; Aluminum heat radiation rack cross section is square, and aluminum heat radiation rack is provided with and assembles part, assembles part and aluminum heat radiation rack is connected as a single entity; Assemble part and be provided with electrical interface, pcb board is provided with the energising interface that can be communicated with electrical interface, and aluminum heat radiation rack is provided with threading position, and threading bit position is between corresponding electrical interface and energising interface; Assembling part is movably connected on installing frame by connector.

2. a kind of LED light fixture according to claim 1, is characterized in that aluminum heat radiation rack cross section is square, and assembling part is 4, each all middles in every limit, position that assemble part; The electrical interface that is not used in connection electric connection line and connector seals by capping; Connector is L shaped metallic interconnect.

3. a kind of LED light fixture according to claim 1, is characterized in that installing frame comprises housing and inside casing, and inside casing is movably arranged in housing by installation shaft, and inside casing longitudinally rotates in housing along installation shaft; LED module is movably arranged in inside casing by connector, and what LED module was horizontal rotates along inside casing.

4. according to a kind of LED light fixture described in claim 1 or 2 or 3, the quantity that it is characterized in that LED module is between 2-30 group; IC chip on pcb board, by operating current and the work calories of pulse width modulation control LED, carries out the adjustment of voltage stabilizing and constant current by changing dutycycle; LED brightness regulation module is set on pcb board, and pcb board is provided with 4 the energising interfaces that all can control LED switch and regulate LED brightness.

5. according to a kind of LED light fixture described in claim 1 or 2 or 3, it is characterized in that the hood-shaped shape of lens face is the square mating with aluminum heat radiation rack bottom surface, lens face shield middle part convexes to form cavity volume downwards with respect to edge, and the edge of lens face shield is screwed on the edge of square fixed panel bottom; The edge of lens face shield bottom is provided with the mount pad of multiple regularly arranged and downward protrusions, and mount pad and lens face shield are connected as a single entity, and screw passes mount pad and is fixed on aluminum heat radiation rack, and lens face shield is provided with the decoration that screw outer end is sealed; On lens face shield, be provided with aluminum heat radiation rack junction the groove that holds water-tight circle, water-tight circle is stuck in groove, the inner side of the position of water-tight circle in screw; Lens face shield is provided with 12 lens installing holes, 12 airtight being fitted on lens installing hole of lens, and 12 lens arrangement become 4 curved lenses bands that length is identical, and every curved lenses band is formed by 5 lens arrangement; On pcb board, the quantity of LED and arrangement position mate with lens, each lens directly over a LED is set, 12 LED are arranged in 4 arc LED luminous zones that length is identical.

6. a kind of LED light fixture according to claim 3, is characterized in that housing is provided with handle or installing tache.

7. a kind of LED light fixture according to claim 1, is characterized in that through the electric connection line of IP protective treatment it being, on the two ends of electric connection line, waterproof seal plug is set.

8. a kind of LED light fixture according to claim 1, is characterized in that aluminum heat radiation rack top is provided with heat radiation fixed head, and heat radiation fixed head bottom is connected as a single entity with aluminum heat radiation rack top, and the top of heat radiation fixed head is provided with connecting thread mouth; Heat sink cross section is L-shaped, and heat sink is connected as a single entity and is formed by long slab and short slab, and long slab is through the heat sink installing hole on aluminum heat radiation rack.

9. a kind of LED light fixture according to claim 1, it is characterized in that LED module also comprises lens and lens face shield, lens are airtight to be arranged on lens face shield, and lens face shield is fixed on radiating subassembly, and is provided with water-tight circle between lens face shield and radiating subassembly.

10. a kind of LED light fixture according to claim 1, it is characterized in that at least one threading position is threading via hole, remaining threading position is to be transparent threading screens groove by impact, is connected on the electrical interface corresponding with threading via hole through the electric connection line of IP protective treatment.