Power led
Technical field
The utility model relates to a kind of light-emitting diode, specifically, relates to a kind of power led.
Background technology
Be to increase the LED core area or add the big light-emitting diodes input current for improving the method that light-emitting diode luminance and luminous flux adopted at present.Along with the increase of LED core and the increase of input current, the heat that LED core produced also constantly increases, if the heat that LED core produced can not in time be transmitted in the environment, the accumulation of heat will cause the rising of tube core PN junction temperature, and the rising of PN junction temperature will directly have influence on luminous flux, luminous intensity and the luminous efficiency of light-emitting diode.Therefore conventional stent formula and flat type LED can't increase input current or adopt the large chip tube core because its pin is little and do not have a special heat dissipation design.Along with the development of semiconductor lighting, conventional stent formula and flat type LED can not satisfy illuminating engineering and the constantly requirement of development of other special lighting.
Summary of the invention
The purpose of this utility model be to provide a kind of luminous intensity height, perfect heat-dissipating, simple in structure, use power led easily.
Assembling structure is partly sealed in power led employing of the present utility model, it comprises electrode pin, heat sink, framework, tube core, bonding line, transparent gluey encapsulating material, heat sink and first electrode pin is an integral structure, remaining electrode links to each other with tube core by bonding line and separates with heat sink, heat sinkly be arranged in the framework and have one side all to expose, in the framework central upper one recessed cup is arranged, plating one deck reflector, surface of recessed cup, transparent gluey encapsulating material is filled in the recessed cup, and tube core is placed on recessed cup bottom heat sink.Heat sink upper and lower surface is the plane, and each electrode pin is a sheet, and framework adopts injection mo(u)lding, and its profile is rectangle or square.
The effect that the utility model can reach is: adopt special heat sink design, increased area of dissipation; Adopt the encapsulation of half encapsulating structure, heat sink one side all exposes, and can fully contact with wiring board, has accelerated heat transfer rate, and the light that the reflector of the recessed cup of framework can be sent the tube core side reflects away, and has increased the luminous flux and the luminous intensity of light-emitting diode; The pellet electrode pin has increased the contact area with wiring board, can increase heat transfer area, accelerates heat radiation.In a word, the utility model can effectively improve power led radiating effect and luminous efficiency.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the utility model first embodiment schematic diagram;
Fig. 2 is the utility model second embodiment schematic diagram;
Fig. 3 is the stereogram of the utility model first embodiment.
Specific embodiment
As shown in Figure 1, assembling structure is partly sealed in power led employing of the present utility model, it comprises electrode pin, heat sink 3, framework 1, tube core 4, bonding line 8, transparent gluey encapsulating material 9, heat sink 3 and first electrode pin 2 is an integral structure, remaining electrode is that second electrode pin 5 in the present embodiment links to each other by bonding line 8 and tube core 4 and separates with heat sink 3, and first electrode and second electrode pin are sheet; Heat sink 3 are arranged in the framework 1 and have one side all to expose, and its upper and lower surface is the plane; In framework 1 central upper one recessed cup 6 is arranged, plating one deck reflector, surface 7 of recessed cup 6, transparent gluey encapsulating material 9 is filled in the recessed cup 6, tube core 4 be placed in recessed cup 6 bottoms heat sink 3 on; Recessed cup 6 cross sections are inverted cone shape, also can adopt parabolic shape; Recessed cup 6 surfaces the reflector of plating 7 materials be magnesium or silver; Framework 1 profile is a square or rectangular.
The embodiment shown in Figure 2 and the main distinction of Fig. 1 are that the outer surface that is filled in the transparent gluey encapsulating material 9 in the recessed cup 6 is a sphere, and Fig. 1 is the plane.All the other are identical with Fig. 1 embodiment, and present embodiment is not carefully stated at this.
Make the utility model power led before, by each power led electrode pin, heat sinkly form power led support, form the support bar by a plurality of support parallel arranged, fabrication and processing is based on the support bar.The power led making of the utility model may further comprise the steps:
(1) injection mo(u)lding: framework is sealed in power led support injection moulding;
(2) plating reflector: at the side of the recessed cup of framework plating magnesium or argentum reflecting layer;
(3) welding tube core: tube core is bonding or be welded on the heat sink metal covering;
(4) gold thread bonding: tube core is connected to the respective electrode pin with gold thread;
(5) some glue: insert in the recessed cup with the gluey encapsulating material of deployed elasticity printing opacity;
(6) solidify: the power led curing oven of putting into that will put glue solidifies, and makes the gluey encapsulation material solidifies moulding of elasticity printing opacity;
(7) floating screed: cut from its support bar with power led;
(8) test: the optics of detection power light-emitting diode and electrical parameter and according to the detection case stepping;
(9) packing: power led being packaged into behind the stepping adorned or slivering;
(10) warehouse-in.
The main distinction of second embodiment and first embodiment is that the exiting surface of second embodiment is a sphere.In fact, power led a lot of other embodiment that also have of the present utility model, for example, but power led seamed edge chamfer or rounding; Power led can have plural electrode, and each utmost point pin number also can be different, and the shape of electrode and pin also can be different, and each electrode pin can be identical with first utmost point thickness near the thickness of die site; Can encapsulate more than one tube core in recessed cup, can connect between each tube core also can be in parallel.