CN101344232A - Surface type LED lamp - Google Patents
Surface type LED lamp Download PDFInfo
- Publication number
- CN101344232A CN101344232A CNA2008100706372A CN200810070637A CN101344232A CN 101344232 A CN101344232 A CN 101344232A CN A2008100706372 A CNA2008100706372 A CN A2008100706372A CN 200810070637 A CN200810070637 A CN 200810070637A CN 101344232 A CN101344232 A CN 101344232A
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- China
- Prior art keywords
- smdled
- heat sink
- metal heat
- right metal
- insulation board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- Led Device Packages (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
The invention relates to an SMDLED lamp which comprises a base and a plurality of SMDLEDs fixedly installed on the base, and is characterized in that: the SMDLED is a flip chip type LED, the two electrodes of which are respectively positioned at the two sides of the bottom surface; the base comprises an insulation board, the top surface width of which is smaller than the distance between the two electrodes of the SMDLED, and left metal thermal sink and right metal thermal sink which have high thermal conductivity and electrical conductivity and are correspondingly clung and arranged on the two side surfaces of the insulation board; the top surfaces of the left and the right metal thermal sink are positioned on a same plane which is not lower than the top surface of the insulation board; the two electrodes of the SMDLED are respectively welded and fixed with the left and the right metal thermal sink. The electrodes of the SMDLED are directly welded on the metal thermal sink so as to cause heat energy generated by the SMDLED to be emitted directly by the high thermal conductive left and right metal thermal sink, with good heat dissipation capability; furthermore, the left and the right metal thermal sink are used as the electrodes simultaneously, and the overlapping of leads and the configuration of circuit boards are not needed, thus greatly simplifying the structure of the lamp, saving resources and reducing product cost.
Description
Technical field
The present invention relates to the led technology field, particularly a kind of surface type light emitting diode (SMDLED) light fixture.
Background technology
At present, the mounting means of surface type light emitting diode (hereinafter to be referred as SMDLED) light fixture has following two kinds: one, SMDLED is fixedly mounted on the circuit board of light fixture, again circuit board is utilized insulating cement to be fixed on high-cooling property heat sink, two electrodes of the SMDLED counter electrode of routing and circuit board respectively are electrically conducted, external circuit imposes direct current by circuit board to SMDLED, impels SMDLED to produce brightness.The SMDLED of this mounting means does conduction and heat conduction by two electrodes, the heat that produces by routing after the circuit board transmission by heat sink eliminating, its weak point is, operation technique requires high, routing is made difficulty, particularly be difficult for especially for small size SMDLED, and because printed circuit board (PCB) is non-high heat conductive body, its thermal conductivity coefficient is low, heat dispersion is poor, a large amount of heat energy that SMDLED produces can't in time be dredged and be got rid of, and directly cause the SMDLED junction temperature to raise, and light fixture hot polymerization effect and thermal resistance are excessive, cause short and light decay phenomenon in SMD-LED service life easily, and therefore improve energy consumption.Two, SMDLED is adopted flip-over type be fixedly mounted on the circuit board of light fixture, the SMDLED electrode directly and the counter electrode contact of circuit board weld together and be electrically conducted.The SMDLED of this mounting means does conduction and heat conduction by two electrodes, the heat of generation still by after the circuit board transmission by heat sink eliminating, the same bad problem of dispelling the heat that exists.
Comprehensively above-mentioned, existing SMDLED light fixture exists complex structure, assembling work to be difficult for and the bad problem of dispelling the heat.
Summary of the invention
The objective of the invention is to overcome existing SMDLED fitting structure complexity, assembling work is difficult for and the bad deficiency of dispelling the heat, provide a kind of simple in structure, install convenient and have the SMDLED light fixture of high heat dispersion.
Purpose of the present invention is achieved through the following technical solutions:
A kind of surface type light emitting diode (SMDLED) light fixture comprises pedestal and is installed in a plurality of SMDLED on this pedestal that it is characterized in that: described SMDLED is flip chip type LED, and its two electrode lays respectively at the both sides, bottom surface of SMDLED; Described pedestal comprises insulation board and the corresponding high heat-conductivity conducting left and right metal heat sink that be attached at this insulation board two sides on of end face width less than SMDLED two electrode spacings, and the end face of left and right metal heat sink is positioned on the same plane that is not less than the insulation board end face; Described SMDLED two electrodes directly are fixed and welded together with left and right metal heat sink respectively and are electrically conducted.
Described left and right metal heat sink comprises the spaced apart metal heat sink sheet of multistage respectively, and the metal heat sink sheet of left and right metal heat sink is staggered, forms the loop to realize that SMDLED work string and series-parallel connection mode are electrically conducted.
Be coated with the high radiating insulating watertight composition on the left and right metal heat sink outer surface beyond the electrode pad zone of described left and right metal heat sink and SMDLED.
Fixedly connected with insulation board by red glue in the middle part, bottom surface of described SMDLED.
Be respectively equipped with groove on the lateral surface of described left and right metal heat sink.
Described pedestal integral body is strip, discoid or square frame shape.
The beneficial effect of surface type light emitting diode provided by the invention (SMDLED) light fixture is:
Light fitting base adopts left and right metal heat sink and the insulating trip that is located between the left and right metal heat sink constitutes, left and right metal heat sink be radiator be again conductive electrode, two electrodes of SMDLED directly are weldingly fixed on the left and right metal heat sink respectively, the heat energy that SMDLED is produced is directly dispersed by the left and right metal heat sink of high heat conduction, by increasing connection reliability and the heat radiation between each element; And left and right metal heat sink uses as electrode again simultaneously, needn't overlap lead and configuration circuit plate, simplifies fitting structure greatly, saves resource, reduces product cost.The present invention compares with existing SMDLED light fixture, has simple in structurely, is connected firmly between SMDLED and the pedestal, installs convenient and advantage high heat dispersion.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in further detail.
Fig. 1 is the Facad structure schematic diagram of first embodiment of the invention.
Fig. 2 is the cutaway view Amplified image along A-A direction among Fig. 1.
The structural representation of the pedestal among Fig. 3 Fig. 2.
Fig. 4 is the circuit theory diagrams of first embodiment of the invention.
Fig. 5 is the Facad structure schematic diagram of second embodiment of the invention.
Fig. 6 is the circuit theory diagrams of second embodiment of the invention.
The specific embodiment
Embodiment 1: with reference to Fig. 1, Fig. 2.Surface type light emitting diode (SMDLED) light fixture comprises being used to that the pedestal 1 of SMDLED 2 is installed and being installed in a plurality of flip chip type SMDLED 2 on this pedestal 1 end face.Two electrodes 21,22 of SMDLED 2 lay respectively at the both sides, bottom surface of SMDLED.
Referring to figs. 1 through 3.Pedestal 1 is made of the left and right metal heat sink 12,13 of the strip of strip insulation board 11 and high heat-conductivity conducting.The end face width of insulation board 11 is less than the spacing between SMDLED two electrodes 21,22, and left and right metal heat sink 12,13 correspondences fixedly are attached on the two sides of this insulation board 11.Left and right metal heat sink 12,13 is with after insulation board 11 is fixedlyed connected, and the end face of left and right metal heat sink 12,13 and insulation board 11 is in the same plane.For increasing the area of dissipation of pedestal 1,, on the lateral surface of left and right metal heat sink 12,13, be respectively equipped with groove 3 to improve radiating effect.Be coated with the insulating waterproof layer 5 that the high radiating insulating lacquer is made on left and right metal heat sink 12,13 outer surfaces outside the electrode pad zone 4 of left and right metal heat sink 12,13 and SMDLED 2; utilize insulating waterproof layer 5 can isolate contacting of electric path and extraneous air; promptly electric path is done insulating waterproof layer protection, with protection pedestal 1 and light fixture integral body safety.Above-mentioned metal heat sink can select for use aluminum to make, and metal heat sink is made anodized insulation handle, and makes to apply the high radiating insulating lacquer on the outer metal heat sink outer surface of electrode pad, plays the effect of insulative water-proof.
With reference to Fig. 1, Fig. 2.The middle part, bottom surface of each SMDLED 2 is fixed on the insulation board 11 by red glue 6, and SMDLED two electrodes 21,22 directly are fixed and welded together with left and right metal heat sink 12,13 respectively and are electrically conducted.Its operating type is: utilize earlier red glue 6 with all SMDLED 2 fixed interval on insulation board 11, finish two electrodes 21,22 of SMDLED and the fixedly welding of left and right metal heat sink 12,13 by the reflow stove again, so, with all SMDLED 2 fixed interval on pedestal 1.With reference to Fig. 4, all SMDLED 2 connect as shunt conductance by left and right metal heat sink 12,13, and external circuit directly imposes direct current to SMDLED by left and right metal heat sink 12,13, impels SMDLED to produce brightness.
The shape of pedestal 1 is not limited to shown in the figure, can be designed to discoid or other moulding such as square frame shape according to concrete needs, is not described in detail at this.
This light fixture can be used as plane lamp, strip-shaped lamp or backlight and uses.
Embodiment 2: present embodiment as different from Example 1:
With reference to Fig. 5.The left and right metal heat sink 12,13 of insulation board 11 both sides is made of the spaced apart metal heat sink sheet of multistage 12a, 13a respectively, and metal heat sink sheet 12a, the 13a of both sides are staggered layout.As shown in Figure 6, all SMDLED 2 form by spaced apart metal heat sink sheet 12a, 13a and string series-parallel connection loop, are convenient to the wiring design.The quantity of SMDLED and connection in series-parallel connect mode and do not do concrete restriction, can decide according to designing requirement according to actual needs; As the 60CM lines type fluorescent lamp source of using 90 SMDLED, can be arranged as 15 and 6 serializer circuits; If use the 60CM lines type fluorescent lamp source of 120 SMDLED, can be arranged as 20 and 6 serializer circuits.All the other structures are identical with embodiment 1, do not repeat them here.
The above, only for preferred embodiment of the present invention, so can not limit scope of the invention process with this, i.e. the equivalence of doing according to the present patent application claim and description changes and modification, all should still belong in the scope that patent of the present invention contains.
Claims (7)
1. a surface type light emitting diode (SMDLED) light fixture comprises pedestal and is installed in a plurality of SMDLED on this pedestal that it is characterized in that: described SMDLED is flip chip type LED, and its two electrode lays respectively at the both sides, bottom surface of SMDLED; Described pedestal comprises insulation board and the corresponding high heat-conductivity conducting left and right metal heat sink that be attached at this insulation board two sides on of end face width less than SMDLED two electrode spacings, and the end face of left and right metal heat sink is positioned on the same plane that is not less than the insulation board end face; Described SMDLED two electrodes directly are fixed and welded together with left and right metal heat sink respectively and are electrically conducted.
2. surface type light emitting diode according to claim 1 (SMDLED) light fixture, it is characterized in that: described left and right metal heat sink comprises the spaced apart metal heat sink sheet of multistage respectively, the metal heat sink sheet of left and right metal heat sink is staggered, forms the loop to realize that SMDLED work string and series-parallel connection mode are electrically conducted.
3. surface type light emitting diode according to claim 1 (SMDLED) light fixture is characterized in that: be coated with the high radiating insulating watertight composition on the left and right metal heat sink outer surface beyond the electrode pad zone of described left and right metal heat sink and SMDLED.
4. surface type light emitting diode according to claim 1 (SMDLED) light fixture is characterized in that: fixedly connected with insulation board by red glue in the middle part, bottom surface of described SMDLED.
5. surface type light emitting diode according to claim 1 (SMDLED) light fixture is characterized in that: be respectively equipped with groove on the lateral surface of described left and right metal heat sink.
6. surface type light emitting diode according to claim 1 (SMDLED) light fixture is characterized in that: the left and right metal heat sink of described pedestal and the end face of insulation board are in the same plane.
7. surface type light emitting diode according to claim 1 (SMDLED) light fixture is characterized in that: described pedestal integral body is strip, discoid or square frame shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100706372A CN101344232A (en) | 2008-02-13 | 2008-02-13 | Surface type LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100706372A CN101344232A (en) | 2008-02-13 | 2008-02-13 | Surface type LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101344232A true CN101344232A (en) | 2009-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100706372A Pending CN101344232A (en) | 2008-02-13 | 2008-02-13 | Surface type LED lamp |
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| Country | Link |
|---|---|
| CN (1) | CN101344232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845722A (en) * | 2017-11-23 | 2018-03-27 | 麦科勒（滁州）新材料科技有限公司 | A kind of LED car lamp heat conduction encapsulating structure, LED car lamp and manufacture method |
-
2008
- 2008-02-13 CN CNA2008100706372A patent/CN101344232A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845722A (en) * | 2017-11-23 | 2018-03-27 | 麦科勒（滁州）新材料科技有限公司 | A kind of LED car lamp heat conduction encapsulating structure, LED car lamp and manufacture method |
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Open date: 20090114 |