Summary of the invention
The technical problem that the present invention mainly solves provides a kind of LED lamp assembly, can effective isolation power supply board and radiator, and insulation effect is good, and can guarantee the service life of LED light fixture.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of LED lamp assembly is provided.This LED lamp assembly comprises: radiator, lower cover, joint and power supply board.Radiator comprises that the central axis around radiator is a plurality of fin of radial arrangement, and each fin comprises near the inward flange of central axis, away from central axis and the outward flange relative with inward flange and connect inward flange and outward flange and top edge respect to one another and lower limb.Lower cover is supported on the lower limb, and is fixed on the radiator.Joint is arranged at down and covers, and cooperates formation one separate cavities with lower cover.Power supply board is arranged in the separate cavities, and then isolates with radiator.
Wherein, radiator further is provided with first cavity that extends along central axis, and lower cover is provided with first through hole corresponding with first cavity, and the LED lamp assembly further comprises fixed head and connector.Fixed head is supported on the top edge, and is provided with and the first cavity corresponding second through hole.Connector is arranged in first through hole, first cavity and second through hole, and the clamping lower cover relative with fixed head away from both sides, so that lower cover and fixed head are fixed on the radiator.
Wherein, connector is a rivet, and rivet comprises: first support portion, second support portion and connecting portion.First support portion is supported in the side away from fixed head of lower cover; Second support portion is supported in the side away from lower cover of fixed head; Connecting portion is arranged in first through hole, first cavity and second through hole and connects first support portion and second support portion, and wherein first support portion or second support portion are formed by connecting portion crimp.
Wherein, lower limb comprises upwards second lower limb of depression of close outer peripheral first lower limb and close inward flange and relative first lower limb, and lower cover is supported on second lower limb.
Wherein, lower cover comprises first lower cover and second lower cover.First lower cover comprises the cylindrical sidewall that a diapire and an end are connected with diapire and extend downwards, and diapire is supported on second lower limb.Second lower cover is arranged at the periphery of cylindrical sidewall, and connects the other end of cylindrical sidewall, and upwards is the extension of inversed taper platform shape.
Wherein, first lower cover is provided with air vent first time, and joint is provided with air vent second time.
Wherein, further be provided with first baffle plate that is used to block first time air vent on first lower cover, first time air vent is arranged at the joint of diapire and cylindrical sidewall, and first baffle plate is provided with on the diapire and is positioned at the air vent inboard first time, and extends downwards.Joint comprises an inversed taper platform shape sidewall, and second time air vent is arranged on the inversed taper platform shape sidewall, further is provided with second plate washer on the inversed taper platform shape sidewall, and second baffle is positioned at the air vent downside second time, and extends upward.
Wherein, the LED lamp assembly is further used for the isolating pad of insulating power supply substrate and connector.
Wherein, the LED lamp assembly further comprises light source substrate, and light source substrate is arranged on the fixed head and is provided with a plurality of light sources.
Wherein, the LED lamp assembly further comprises the lead that connects power supply board and light source substrate, and connector is provided with second cavity that extends along central axis, and lead connects power supply board and light source substrate through second cavity.
The invention has the beneficial effects as follows: be different from the situation of prior art, the present invention can effective isolation power supply board and radiator, and insulation effect is good, and can guarantee the service life of LED light fixture.
The specific embodiment
Consult Fig. 1-3, Fig. 1 is first schematic perspective view of decomposing state of first embodiment of LED lamp assembly of the present invention; Fig. 2 is second schematic perspective view of decomposing state of first embodiment of LED lamp assembly of the present invention; Fig. 3 is the sectional view of assembled state of first embodiment of LED lamp assembly of the present invention.
In first embodiment of LED lamp assembly of the present invention, the LED lamp assembly comprises: radiator 1100, lower cover 1200, fixed head 1300, connector 1400, light source substrate 1500, lens substrate 1600, loam cake 1700, joint 1800 and power supply board 1900.
Radiator 1100 comprises that the central axis around radiator 1100 is a plurality of fin 1110 of radial arrangement.Referring to Fig. 4, Fig. 4 is the structure enlarged drawing of the fin among Fig. 3.Each fin 1110 comprises near the inward flange 1120 of central axis, away from central axis and the outward flange 1130 relative with inward flange 1120 and connect inward flange 1120 and outward flange 1130 and top edge respect to one another 1140 and lower limb 1150.Top edge 1140 comprises near first top edge 1141 of outward flange 1130 and near inward flange 1120 and relative first top edge 1,141 second top edge 1142 to lower recess, and further comprises the 3rd top edge 1143 between first top edge 1141 and second top edge 1142.Bending is provided with first cramp 1144 on the 3rd top edge 1143.Lower limb 1150 comprises near first lower limb 1151 of outward flange 1130 and near inward flange 1120 and relative first lower limb 1,151 second lower limb 1152 of depression upwards.Bending is provided with second cramp 1154 on first lower limb 1151.Fin 1110 interfixes by first cramp 1144 and second cramp 1154.As shown in Figure 3, radiator 1100 further is provided with first cavity 1160 that extends along central axis.In the present embodiment, first cavity 1160 is formed by inward flange 1120 definition.In other embodiments, first cavity 1160 can form by other modes.
Lower cover 1200 is supported on the lower limb 1150, and is provided with first through hole 1212 corresponding with first cavity 1160.Specifically, lower cover 1200 comprises first lower cover 1210 and second lower cover 1220.First lower cover 1210 comprises the cylindrical sidewall 1213 that a diapire 1211 and an end are connected with diapire 1211 and extend downwards.Diapire 1211 is supported on second lower limb 1152.First through hole 1212 is formed on the diapire 1211.Second lower cover 1220 is arranged at the periphery of cylindrical sidewall 1213, and connects the other end of cylindrical sidewall 1213, and upwards is the extension of inversed taper platform shape.And, be arranged at intervals with second slot 1215 of first lower limb 1151 that is used to receive radiator 1100 on second lower cover 1220.General, lower cover is made by insulating materials.
Fixed head 1300 is supported on the top edge 1140 of radiator 1100, and is provided with and first cavity, 1160 corresponding second through hole 1310.In the present embodiment, fixed head 1300 is aluminium sheet and specifically is supported on second top edge 1142 of radiator 1100.
Connector 1400 is arranged in first through hole 1212, first cavity 1160 and second through hole 1310, and clamping lower cover 1200 and fixed head 1300 relative away from both sides, so that lower cover 1200 and fixed head 1300 are fixed on the radiator 1100.In the present embodiment, connector 1400 is a rivet, and comprises first support portion 1410, second support portion 1420 and connecting portion 1430.First support portion 1410 is supported in the side away from fixed head 1300 of the diapire 1211 of lower cover 1200, and second support portion 1420 is supported in the side away from lower cover 1200 of fixed head 1300.The diapire 1211 of lower cover 1200 is provided with first recess 1216 that is used to receive first support portion 1410, and fixed head 1300 is provided with second recess 1320 that is used to receive second support portion 1420.Connecting portion 1430 is arranged in first through hole 1212, first cavity 1160 and second through hole 1310 and connects first support portion 1410 and second support portion 1420.In the present embodiment, second support portion 1420 is formed by connecting portion 1430 crimps, and in other embodiments, can be first support portion 1410 and formed by connecting portion 1430 crimps.By the said fixing mode, can be simply, convenient and effectively fixedly lower cover 1200 and radiator 1100.Simultaneously, because the clamping action of lower cover 1200 and fixed head 1300 has been avoided the displacement between the fin 1110.
Light source substrate 1500 is arranged on the fixed head 1300 and is provided with a plurality of light sources 1510.In the present embodiment, 1300 of light source substrate 1500 and fixed heads are provided with heat conduction and paste 1530, to improve the heat-conducting effect between light source substrate 1500 and the fixed head 1300.In other embodiments, light source 1510 also can directly be arranged on the fixed head 1300.
Lens substrate 1600 is arranged on the light source substrate 1500 and is provided with respectively a plurality of lens units 1610 corresponding with a plurality of light source 1510.In the present embodiment, lens substrate 1600 is provided with a plurality of support columns 1620 that extend to light source substrate 1500, and light source substrate 1500 is provided with corresponding accommodation hole 1520.Support column 1620 is inserted in the accommodation hole 1520, and lens substrate 1600 is fixing with respect to light source substrate 1500.
Loam cake 1700 comprises first upper cover body 1710 and second upper cover body 1720.First upper cover body 1710 ringwise and be supported on first top edge 1141 of radiator 1100.Be arranged at intervals with first slot 1711 that is used to receive first top edge 1141 on first upper cover body 1710.Second upper cover body 1720 is arranged at the inside edge of first upper cover body 1710 and extends downwards.Second upper cover body 1720 and the fin 1110 corresponding button bits 1721,1170 that are provided with are to be fixed in loam cake 1700 on the radiator 1100 by button bit 1721,1170.Further be arranged at intervals with a plurality of air vents 1730 of going up on first upper cover body 1710, to promote the circulation of air between the fin 1110.
Joint 1800 is arranged on the lower cover 1200.Correspondence is provided with button bit 1810,1214 on joint 1800 and the lower cover 1200, so that joint 1800 is fixing with respect to lower cover 1200.Joint 1800 cooperates formation one separate cavities 1820 with lower cover 1200.Power supply board 1900 is arranged in the separate cavities 1820, and then isolates with radiator 1100.
The LED lamp assembly further comprises the lead 1910 that connects power supply board 1900 and light source substrate 1500.Connector 1400 is provided with second cavity 1440 that extends along central axis, and heat conduction is pasted 1530 and is provided with third through-hole 1531, and lead 1910 is connected power supply board 1900 and light source substrate 1500 through second cavity 1440 with third through-hole 1531.
In another embodiment, referring to Fig. 5 and Fig. 6, Fig. 5 is the schematic perspective view of decomposing state of second embodiment of LED lamp assembly of the present invention; Fig. 6 is the sectional view of the assembled state of the LED lamp assembly among Fig. 5.Among second embodiment of LED lamp assembly of the present invention, the LED lamp assembly comprises: radiator 2100, lower cover 2200, fixed head 2300, connector 2400, light source substrate 2500, heat conduction subsides 2530, lens substrate 2600, loam cake 2700, joint 2800 and power supply board 2900.The main distinction point of the structure of the second embodiment of the invention and first embodiment is: upper cover body 2700 comprises first upper cover body 2710 and second upper cover body 2720.First upper cover body 2710 ringwise and be supported on first top edge 2141 of radiator 2100.Second upper cover body 2720 is arranged at the inside edge of first upper cover body 2710 and extends downwards.Second upper cover body 2720 is provided with the extension 2721 that extends towards central axis, and fixed head 2500 is suppressed on extension 2721, so that loam cake 2700 is fixed in radiator 2100.In the present embodiment, fixed head 2500 is fixed on the radiator 2100 by the mode identical with first embodiment.In other embodiments, fixed head 2500 also can be fixed on the radiator 2100 by other modes.
In addition, the LED lamp assembly further comprises the isolating pad 2240 that is used for insulating power supply substrate 2900 and connector 2400.Isolating pad 2240 matches with lower cover 2200, and power supply board 2900 and connector 2400 are isolated.And isolating pad 2240 is provided with fourth hole 2241, is used for by lead 2910.
Referring to Fig. 7, Fig. 7 is the partial cross section figure of the 3rd embodiment of LED lamp assembly of the present invention.In the present embodiment, first lower cover 3210 is provided with first time air vent 3214 and is used to block first baffle plate 3215 of first time air vent 3214.Specifically, first time air vent 3214 is arranged at the diapire 3211 of first lower cover 3210 and the joint of cylindrical sidewall 3213.First baffle plate 3215 is provided with on the diapire 3211 and is positioned at air vent 3214 inboards first time, and extends downwards.Joint 3800 is provided with second time air vent 3830 and is used to block the second baffle 3840 of second time air vent 3830.In the present embodiment, joint 3800 comprises that 3820, the second times air vents 3830 of an inversed taper platform shape sidewall and second baffle 3840 are arranged on the inversed taper platform shape sidewall 3820.Second baffle 3840 is positioned at air vent 3830 downsides second time, and extends upward.This kind design can be quickened heat radiation, and prevents that outer goods from entering into the inside of LED lamp assembly by first time air vent 3214, second time air vent 3830, destroys power supply board 3900 or cause short circuit.
The invention has the beneficial effects as follows: be different from the situation of prior art, the present invention can be simply, convenient and effectively fixedly lower cover and radiator.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.