CN203454055U - Heat dissipation structure of LED lamp - Google Patents
Heat dissipation structure of LED lamp Download PDFInfo
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- CN203454055U CN203454055U CN201320487263.0U CN201320487263U CN203454055U CN 203454055 U CN203454055 U CN 203454055U CN 201320487263 U CN201320487263 U CN 201320487263U CN 203454055 U CN203454055 U CN 203454055U
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Abstract
The utility model relates to a heat dissipation structure of an LED lamp to solve the problem that an existing LED lamp is poor in heat dissipation performance and to solve other problems. The heat dissipation structure comprises a circuit board. At least one LED light source is arranged on one side of the circuit board, and a radiator is arranged on the other side of the circuit board. The circuit board comprises a substrate and a circuit structure, wherein the substrate and the circuit structure are made of nonmetallic materials. The LED light sources are electrically connected with the circuit structure. A plurality of through holes which correspond to the LED light sources one to one are formed in the substrate. A plurality of heat conduction columns which correspond to the through holes one to one are arranged on the radiator, wherein the length of each heat conduction column is smaller than the length of the corresponding through hole. The heat conduction columns are inserted into the through holes. A heat conduction body which is made of insulating and thermal conducting materials is arranged in each through hole. The two ends of each heat conduction body make contact with the corresponding heat conduction column and the corresponding LED light source respectively. The heat dissipation structure of the LED lamp has the advantages that the design is simple and reasonable, insulation performance of the lamp is ensured while good heat dissipation performance is achieved, safety is high, the service life of the lamp is long, and due to the fact that the substrate is made of low-cost epoxy resin instead of expensive aluminum, cost is effectively reduced.
Description
Technical field
The utility model belongs to lighting technical field, especially relates to a kind of LED lamp cooling structure.
Background technology
The composition of existing LED light fixture mainly comprises: diffuser, LED light source, aluminium base, radiator, power supply, working of plastics, lamp holder etc., wherein the heat radiation approach of LED light source is: LED light source is welded on aluminium base, one deck heat-conducting cream is spread at the aluminium base back side, then with securing member, aluminium base is fixed on radiator, the heat that LED light source produces is passed on radiator and distributes with forms of radiation through aluminium base by the mode of conduction.The heat radiation of above-mentioned LED light source need to be with aluminium base as intermediate medium, the quality of radiating effect depends on the size of contact-making surface between the thermal conductivity factor height of aluminium base and aluminium base and radiator, improve thermal conductivity factor and increase the cost that contact-making surface will inevitably increase aluminium base, increased the production cost of LED light fixture, the quality of the heat-conducting cream material between aluminium base and radiator also can affect heat radiation in addition simultaneously.Therefore, such scheme restraining factors are too much, radiating effect is also poor, and lamp temperatures is higher, and too high temperature has been aggravated the light decay of LED, affected the service life of light fixture, also have because aluminium base has electric conductivity, when electric leakage occurs LED light source, electric current is easily transmitted on radiator by aluminium base, cause LED light fixture generation leaky, security is lower.
The problem existing in order to solve prior art, people have carried out long-term exploration, have proposed solution miscellaneous.For example, Chinese patent literature discloses a kind of LED module [application number: 201220250497.9] of high conductive structure, comprising: LED, has electrode pin and heat conduction pin; The LED wiring board that comprises line layer and insulating barrier, wherein, is provided with the through hole through LED wiring board in the position corresponding with heat conduction pin; Light fixture carrier is supported in the solid heat radiation that is combined in insulating barrier one side, and wherein, the heat conduction pin of LED is fitted via the through hole through LED wiring board or is combined in three-dimensional heat radiation and supports on light fixture carrier.
Such scheme has improved the problem of existing LED light fixture poor radiation to a certain extent, and the heat that LED produces can conduct as early as possible and distribute, but this scheme still exists: structural design is reasonable not, poor insulativity, cost is high, poor stability, the problem such as service life is short.
Summary of the invention
The purpose of this utility model is for the problems referred to above, provides a kind of reasonable in design, good heat dissipation, the LED lamp cooling structure of good insulating.
For achieving the above object, the utility model has adopted following technical proposal: this LED lamp cooling structure, comprise wiring board, described wiring board one side is provided with at least one LED light source, opposite side is provided with radiator, it is characterized in that, described wiring board comprises the substrate of being made by nonmetallic materials and is arranged on the circuit structure on substrate, described LED light source is electrically connected to circuit structure respectively, on substrate, be provided with some and above-mentioned LED light source through hole one to one, described radiator be provided with some and above-mentioned through hole one by one corresponding and length be less than the heating column of through hole length, described heating column inserts in through hole, in each through hole, be also respectively equipped with the heat carrier of being made by insulating heat-conduction material, the two ends of described heat carrier contact with LED light source with heating column respectively.Obviously, adopt said structure can reduce the cost of this LED light fixture, the heat that LED light source can be produced is transmitted on radiator rapidly, makes this LED light fixture have good insulating properties simultaneously.
In above-mentioned LED lamp cooling structure, on described substrate, be also provided with some equally distributed heat radiation through holes, and the aperture of described heat radiation through hole is less than the aperture of through hole.This structure is convenient to the heat radiation of substrate.
In above-mentioned LED lamp cooling structure, described substrate is made by epoxide resin material; Described radiator and heating column are made by aluminium and are connected as a single entity structure; Described heat carrier is made by heat conductive silica gel.The advantages such as it is low that this structure makes substrate have cost, and insulating properties is high, and the strong and moisture resistivity of heat resistance is good; Aluminum alloy materials is convenient to radiator and heating column heat radiation; Heat carrier has good thermal conductivity, has higher insulating properties simultaneously.
In above-mentioned LED lamp cooling structure, the thermal conductivity factor of described heat carrier is greater than 2.5W/ (m.K), and the thickness of described heat carrier is 0.5mm-1.5mm.
In above-mentioned LED lamp cooling structure, described LED light source comprises and is arranged on substrate and the radiating seat corresponding with described through hole, described radiating seat is provided with P-N knot, on described radiating seat, be also respectively equipped with the anodal pin and the negative pole pin that are electrically connected to circuit structure, and described anodal pin and negative pole pin are arranged on substrate by welding manner respectively, and the end face of described heat carrier is close to radiating seat end face.Obviously, adopt said structure that LED light source is securely fixed on substrate, be difficult for occurring break-off, simultaneously heat carrier end face be close to radiating seat top the installation of heat carrier.
In above-mentioned LED lamp cooling structure, described radiator one end has the concave station of axial indent, and described heating column is arranged on concave station, and described substrate is fixedly fitted on concave station and the profile of substrate and concave station adapt.Make the stable higher of substrate, assemble closelyr, improve contact area simultaneously, be conducive to dispel the heat.
In above-mentioned LED lamp cooling structure, described heating column and through hole tight fit, or described substrate is fixed on concave station by securing member.This structure can be stuck on radiator substrate, has increased the stability of light fixture.
In above-mentioned LED lamp cooling structure, described radiator inner circumferential is provided with some radiating ribs that are uniformly distributed and are positioned at described concave station periphery, described radiating ribs and radiator are connected as a single entity structure, and form the radiating groove that can run through radiator two ends between two adjacent radiating ribs.This structure can be gone out dissipation of heat radiator rapidly.
In above-mentioned LED lamp cooling structure, described concave station periphery is also provided with some thermal troughs, described thermal trough and radiating groove one by one corresponding arrange and each one by one the thermal trough of corresponding settings surround with radiating groove the heat dissipation channel that forms axial perforation radiator, described substrate outer rim is by described thermal trough covering; Thereby the tapered stomidium that makes heat dissipation channel be positioned at this end of the other end of described radiator is the hole of cutting sth. askew.This structure can be transmitted to the heat on substrate in heat dissipation channel, and the hole of cutting sth. askew makes heat radiation outlet larger, is convenient to radiator heat-dissipation.
In above-mentioned LED lamp cooling structure, described radiating ribs end inner ring is respectively equipped with clamping breach, described substrate is fixed with away from the one side of radiator the light source base of being made by Heat Conduction Material, described light source base is arranged on clamping breach and end face is close to substrate, and described LED light source is located in light source base.Further improved the stability of LED light fixture, the heat that makes substrate be provided with a side of LED light source can be transmitted on radiator, makes LED light fixture better heat-radiation effect.
Compared with prior art, the advantage of this LED lamp cooling structure is: simplicity of design is reasonable, LED light source directly contacts with radiator, radiator can be gone out dissipation of heat rapidly, has reduced heat eliminating medium, has guaranteed the insulating properties of light fixture when having excellent radiating effect, safe, make this light fixture long service life, with low-cost epoxy resin, substituted the high aluminium base of price, effectively reduce cost.
Accompanying drawing explanation
Fig. 1 is the exploded perspective view of the embodiment mono-that provides of the utility model.
Fig. 2 is embodiment mono-cutaway view that the utility model provides.
Fig. 3 is the exploded perspective view of the embodiment bis-that provides of the utility model.
Fig. 4 is embodiment bis-cutaway views that the utility model provides.
In figure, wiring board 1, substrate 11, through hole 111, heat radiation through hole 112, LED light source 2, radiating seat 21, P-N knot 22, anodal pin two 3, negative pole pin 24, radiator 3, heating column 31, radiating ribs 32, clamping breach 321, radiating groove 33, thermal trough 34, heat carrier 4, concave station 5, heat dissipation channel 6, light source base 7.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Embodiment mono-
As shown in Figure 1-2, this LED lamp cooling structure, comprise wiring board 1, wiring board 1 one sides are provided with at least one LED light source 2, opposite side is provided with radiator 3, wiring board 1 comprises the substrate 11 of being made by nonmetallic materials and is arranged on the circuit structure on substrate 11, LED light source 2 is electrically connected to circuit structure respectively, on substrate 11, be provided with some and LED light source 2 through hole 111 one to one, radiator 3 be provided with some and above-mentioned through hole 111 one by one corresponding and length be less than the heating column 31 of through hole 111 length, heating column 31 inserts in through hole 111, in each through hole 111, be also respectively equipped with the heat carrier 4 of being made by insulating heat-conduction material, the two ends of heat carrier 4 contact with LED light source 2 with heating column 31 respectively, this structure can reduce the cost of this LED light fixture, the heat that LED light source can be produced is transmitted on radiator 3 rapidly, make this LED light fixture there is good insulating properties simultaneously.
As a kind of preferred version, the substrate 11 in the present embodiment is made by epoxide resin material; Radiator 3 and heating column 31 are made by aluminium and are connected as a single entity structure; The advantages such as heat carrier 4 is made by heat conductive silica gel, makes substrate 11 have cost low, and insulating properties is high, and the strong and moisture resistivity of heat resistance is good; Aluminum alloy materials is convenient to radiator 3 and heating column 31 heat radiations; Heat carrier 4 has good thermal conductivity, has higher insulating properties simultaneously.Further, the thermal conductivity factor of heat carrier 4 is greater than 2.5W/ (m.K), and the thickness of described heat carrier 4 is 0.5mm-1.5mm.LED light source 2 comprises and is arranged on substrate 11 and the radiating seat 21 corresponding with through hole 111, radiating seat 21 is provided with P-N knot 22, on radiating seat 21, be also respectively equipped with the anodal pin two 3 and the negative pole pin 24 that are electrically connected to circuit structure, and anodal pin two 3 and negative pole pin 24 are arranged on substrate 11 by welding manner respectively, the end face of heat carrier 4 is close to radiating seat 21 end faces, this structure is securely fixed on substrate 11 LED light source 2, be difficult for there is break-off, simultaneously heat carrier 4 end faces be close to radiating seat 21 tops the installation of heat carrier 4.
Further, radiator 3 one end have the concave station 5 of axial indent, and heating column 31 is arranged on concave station 5, substrate 11 is fixedly fitted on concave station 5 and the profile of substrate 11 and concave station 5 adapt, and makes the stable higher of substrate 11, assembles tightr, improve contact area simultaneously, be conducive to heat radiation.Heating column 31 and through hole 111 tight fits, or substrate 11 is fixed on concave station 5 by securing member, and this structure can be stuck on radiator 3 substrate 11, has increased the stability of light fixture.In order to make radiator 3, can rapidly dissipation of heat be gone out, radiator 3 inner circumferential are provided with some radiating ribs 32 that are uniformly distributed and are positioned at concave station 5 peripheries, radiating ribs 32 is connected as a single entity structure with radiator 3, and forms the radiating groove 33 that can run through radiator 3 two ends between two adjacent radiating ribs 32.Concave station 5 peripheries are also provided with some thermal troughs 34, thermal trough 34 and radiating groove 33 one by one corresponding arrange and each one by one the thermal trough 34 of corresponding settings surround and form the axially heat dissipation channel 6 of perforation radiator 3 with radiating groove 33, substrate 11 outer rims are by 34 coverings of described thermal trough; Thereby the tapered stomidium that makes heat dissipation channel 6 be positioned at this end of the other end of radiator 3 is the hole of cutting sth. askew, and this structure can be transmitted to the heat on substrate 11 in heat dissipation channel 6, and the hole of cutting sth. askew makes heat radiation outlet larger, is convenient to radiator 3 heat radiations.In order further to have improved the stability of LED light fixture, the heat that makes substrate 11 be provided with a side of LED light source 2 can be transmitted on radiator 3, radiating ribs 32 end inner rings are respectively equipped with clamping breach 321, substrate 11 is fixed with away from the one side of radiator 3 light source base 7 of being made by Heat Conduction Material, light source base 7 is arranged on clamping breach 321 and end face is close to substrate 11, and LED light source 2 is located in light source base 7.
Embodiment bis-
As shown in Figure 3-4, the present embodiment is basic identical with structure and the principle of embodiment mono-, different place is, in the present embodiment, heat radiation for the ease of substrate 11, on substrate 11, be also provided with some equally distributed heat radiation through holes 112, and the aperture of heat radiation through hole 112 is less than the aperture of through hole 111.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used the terms such as wiring board 1, substrate 11, through hole 111, heat radiation through hole 112, LED light source 2, radiating seat 21, P-N knot 22, anodal pin two 3, negative pole pin 24, radiator 3, heating column 31, radiating ribs 32, clamping breach 321, radiating groove 33, thermal trough 34, heat carrier 4, concave station 5, heat dissipation channel 6, light source base 7 herein, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (10)
1. a LED lamp cooling structure, comprise wiring board (1), described wiring board (1) one side is provided with at least one LED light source (2), opposite side is provided with radiator (3), it is characterized in that, described wiring board (1) comprises the substrate (11) of being made by nonmetallic materials and is arranged on the circuit structure on substrate (11), described LED light source (2) is electrically connected to circuit structure respectively, on substrate (11), be provided with some and above-mentioned LED light source (2) through hole (111) one to one, described radiator (3) be provided with some and above-mentioned through hole (111) one by one corresponding and length be less than the heating column (31) of through hole (111) length, described heating column (31) inserts in through hole (111), in each through hole (111), be also respectively equipped with the heat carrier (4) of being made by insulating heat-conduction material, the two ends of described heat carrier (4) contact with LED light source (2) with heating column (31) respectively.
2. LED lamp cooling structure according to claim 1, is characterized in that, is also provided with some equally distributed heat radiation through holes (112) on described substrate (11), and the aperture of described heat radiation through hole (112) is less than the aperture of through hole (111).
3. LED lamp cooling structure according to claim 1 and 2, is characterized in that, described substrate (11) is made by epoxide resin material; Described radiator (3) and heating column (31) are made by aluminium and are connected as a single entity structure; Described heat carrier (4) is made by heat conductive silica gel.
4. LED lamp cooling structure according to claim 3, is characterized in that, the thermal conductivity factor of described heat carrier (4) is greater than 2.5W/ (m.K), and the thickness of described heat carrier (4) is 0.5mm-1.5mm.
5. LED lamp cooling structure according to claim 3, it is characterized in that, described LED light source (2) comprises that being arranged on substrate (11) goes up and the radiating seat (21) corresponding with described through hole (111), described radiating seat (21) is provided with P-N knot (22), on described radiating seat (21), be also respectively equipped with the anodal pin (23) and the negative pole pin (24) that are electrically connected to circuit structure, and described anodal pin (23) and negative pole pin (24) are arranged on substrate (11) by welding manner respectively, the end face of described heat carrier (4) is close to radiating seat (21) end face.
6. LED lamp cooling structure according to claim 3, it is characterized in that, described radiator (3) one end has the concave station (5) of axial indent, it is upper that described heating column (31) is arranged on concave station (5), and described substrate (11) is fixedly fitted in concave station (5) profile and concave station (5) upper and substrate (11) and adapts.
7. LED lamp cooling structure according to claim 6, is characterized in that, described heating column (31) and through hole (111) tight fit, or described substrate (11) is fixed on concave station (5) by securing member.
8. LED lamp cooling structure according to claim 6, it is characterized in that, described radiator (3) inner circumferential is provided with some radiating ribs (32) that are uniformly distributed and are positioned at described concave station (5) periphery, described radiating ribs (32) is connected as a single entity structure with radiator (3), and forms the radiating groove (33) that can run through radiator (3) two ends between adjacent two radiating ribs (32).
9. LED lamp cooling structure according to claim 8, it is characterized in that, described concave station (5) periphery is also provided with some thermal troughs (34), described thermal trough (34) and radiating groove (33) one by one corresponding arrange and each one by one the thermal trough of corresponding settings (34) surround with radiating groove (33) heat dissipation channel (6) that forms axial perforation radiator (3), described substrate (11) outer rim covers described thermal trough (34); Described radiator (3) thus the tapered stomidium that makes heat dissipation channel (6) be positioned at this end of the other end be the hole of cutting sth. askew.
10. LED lamp cooling structure according to claim 9, it is characterized in that, described radiating ribs (32) end inner ring is respectively equipped with clamping breach (321), described substrate (11) is fixed with away from the one side of radiator (3) light source base (7) of being made by Heat Conduction Material, described light source base (7) is arranged on clamping breach (321) above and end face is close to substrate (11), and described LED light source (2) is located in light source base (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320487263.0U CN203454055U (en) | 2013-08-10 | 2013-08-10 | Heat dissipation structure of LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320487263.0U CN203454055U (en) | 2013-08-10 | 2013-08-10 | Heat dissipation structure of LED lamp |
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| Publication Number | Publication Date |
|---|---|
| CN203454055U true CN203454055U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320487263.0U Expired - Fee Related CN203454055U (en) | 2013-08-10 | 2013-08-10 | Heat dissipation structure of LED lamp |
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| Country | Link |
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| CN (1) | CN203454055U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398360A (en) * | 2013-08-10 | 2013-11-20 | 宁波丽星照明科技有限公司 | Heat dissipation structure of LED lamp |
| CN106189658A (en) * | 2016-05-23 | 2016-12-07 | 庄可香 | Have except formaldehyde, the LED environmental-protection decorative light fixture of toluene function |
-
2013
- 2013-08-10 CN CN201320487263.0U patent/CN203454055U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398360A (en) * | 2013-08-10 | 2013-11-20 | 宁波丽星照明科技有限公司 | Heat dissipation structure of LED lamp |
| CN103398360B (en) * | 2013-08-10 | 2016-04-27 | 宁波丽星照明科技有限公司 | Heat dissipation structure of LED lamp |
| CN106189658A (en) * | 2016-05-23 | 2016-12-07 | 庄可香 | Have except formaldehyde, the LED environmental-protection decorative light fixture of toluene function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20150810 |
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| EXPY | Termination of patent right or utility model |