CN103196119B - A kind of LED spotlight - Google Patents
A kind of LED spotlight Download PDFInfo
- Publication number
- CN103196119B CN103196119B CN201310149115.2A CN201310149115A CN103196119B CN 103196119 B CN103196119 B CN 103196119B CN 201310149115 A CN201310149115 A CN 201310149115A CN 103196119 B CN103196119 B CN 103196119B
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- heat
- conducting block
- radiator
- housing
- gland
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- 210000004907 gland Anatomy 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 30
- 239000004411 aluminium Substances 0.000 claims description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 30
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 15
- 239000003292 glue Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- -1 Copper-Aluminum compound Chemical class 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a kind of LED spotlight, comprise radiator, lamp holder, high-power COB light source, reflector, eyeglass, gland and power supply; Radiator comprises radiator and heat-conducting block; Radiator comprises housing and fin, and housing has a cavity, and housing is provided with radiating groove; The inwall of housing is provided with draw-in groove; Heat-conducting block adopts red metal manufacture to form, and heat-conducting block is by interference fit holding in draw-in groove, and heat-conducting block upper surface is provided with accommodating cavity; Substrate is compressed in accommodating cavity by interference fit, and support is fixed on heat-conducting block by the lug on support; Reflector has flange, and flange is positioned at the top of step, and eyeglass is located on reflector, gland be arranged on radiator upper end and and lens contacts, gland install after, support extruding substrate substrate and heat-conducting block are deformed.Structure of the present invention can improve radiating effect, improves the reliability that LED light source is fixing.
Description
Technical field
The present invention relates to LED spotlight.
Background technology
The high-power COB shot-light of LED is exactly with the shot-light of light emitting diode as light source.Tradition shot-light many employings Halogen lamp LED, its luminous efficiency is lower, compare power consumption, illuminated environment temperature rises, service life is short.And LED is widely used because having the advantages such as the life-span is long, light efficiency is high, radiation is low and low in energy consumption.For LED lamp, if good heat dissipation effect, can improve the service life of LED lamp, also can improve its light efficiency, therefore, people have done large quantifier elimination in this.Be in the patent document of 2012.11.14, disclose a kind of split type LED spotlight radiator as be 201120577155.3 applyings date at application number being 2011.12.24 authorized announcement date; cast by DH7 type aluminium; heat radiation pin is carefully thin and densely distributed, has power line fixing protector in the central authorities of radiating surface.Although above-mentioned LED spotlight radiator has heat radiation pin, increase area of dissipation, can radiating effect be improved, for the high-power COB light source that heat is relatively concentrated, its radiating effect or not good enough.In addition, existing high-power COB light source is all bonding by heat-conducting glue, because heat-conducting glue thermal conductivity factor is low, even very thin one deck is also increase thermal resistance for heat transfer, but work as through after a period of time, heat-conducting glue there will be aging, that adhesive property is poor phenomenon, therefore, the speed of heat conduction can be affected on the one hand, then make the fixing insecure of high-power COB light source on the other hand, finally affect the service life of LED spotlight.
Summary of the invention
In order to realize high-power COB light source and radiator realizes seamless combination, effective minimizing heat conduction path, strengthens cold-hot air convection speed inside and outside light fixture, improves radiating effect, improve the reliability that high-power COB light source is fixing, the invention provides a kind of LED spotlight.
For achieving the above object, a kind of LED spotlight, comprises radiator, lamp holder, high-power COB light source, reflector, eyeglass, gland and power supply; Lamp holder is connected to the lower end of radiator; High-power COB light source comprises support, aluminium base and LED chip, and aluminium base is rack-mount, and LED chip is located on aluminium base; Radiator comprises radiator and heat-conducting block; Radiator comprises housing and fin, housing has a cavity, housing is provided with the connection cavity and extraneous radiating groove that more than two roads are circular layout, the inside dimensions in radiating groove cross section is greater than side dimension flare, housing upper end is provided with step, described fin is vertically extended on the outer wall of housing, has the gap of 1.5-2.5mm between abutting fins; The inwall of housing is provided with draw-in groove; Heat-conducting block adopts red metal manufacture to form, and heat-conducting block is embedded in draw-in groove by interference fit, and heat-conducting block upper surface is provided with the accommodating cavity consistent with aluminium base shape; Aluminium base is compressed in accommodating cavity by interference fit, and support is fixed on heat-conducting block by the lug on support; Reflector has flange, and flange is positioned at the top of step, and eyeglass is located on reflector, gland be arranged on radiator upper end and and lens contacts, before installation gland, flange and step have gap, after gland is installed, gland extruding eyeglass, eyeglass pressure reflector, reflector extrusion rack, support extruded aluminium substrate, utilize red metal and fine aluminium material to have the physical characteristic of excellent ductility, make aluminium base and heat-conducting block generation plastic deformation to realize seamless combination.
Said structure, owing to being provided with fin, increases area of dissipation, therefore, can improve radiating effect.High-power COB shot-light operationally can produce a large amount of heats, temperature in cavity is raised fast, extraneous temperature is low, because of the reason of temperature difference, can air-flow be formed in high-temperature region and low-temperature space, and owing to being provided with radiating groove, then form air-flow at radiating groove place, high temperature air in cavity is flowed to extraneous, fast the heat in cavity is taken away, serve the object of heat radiation further; Meanwhile, the cross section due to radiating groove is tubaeform, then form draught head in the inner side and outer side of radiating groove, makes the intensity of air-flow more greatly, sooner, makes the better effects if of dispelling the heat.Due to heat-conducting block by interference fit holding in draw-in groove, heat-conducting block directly contacts with radiator, it is more tight to contact, and the speed that the heat on heat-conducting block is delivered on radiator is faster.Have again, because aluminium base adopts aluminium manufacture to form, heat-conducting block adopts red metal manufacture to form, when aluminium base extruding heat-conducting block, plastic deformation is easily there is in both because material has good ductility, and long-time after can produce molecular diffusion at both faying faces and form Copper-Aluminum compound layer at faying face place, both can be combined closely, realize the object of interference fit by arranging accommodating cavity simultaneously, like this, the fixing of aluminium base does not need heat-conducting glue, therefore, the heat that high-power COB light source produces can be delivered on heat-conducting block fast, and the speed of its transferring heat can not change because of the length of service time, thus improve the service life of LED spotlight.Reflector and aluminium base be direct contact failure insulating barrier in extrusion process, therefore the support arranging plastic cement material plays insulation, buffering, antihunt action at this.Meanwhile, be subjected to displacement and warpage when being extruded to prevent support, then fixed by the lug on support and heat-conducting block.
As what optimize, the upper end of housing has the ventilation slot communicated with gap, like this, top and the outside of radiator inwall are penetrating, and heat-conducting block upper and lower sides is provided with radiating groove, therefore, the air-flow of above-below direction can be formed in cavity, thus improve radiating effect further.
As what optimize, radiating groove inside edge is provided with chamfering.The effect of this structure increases area of dissipation on the one hand, makes difference in size inside and outside radiating groove larger on the other hand, therefore, radiating groove inner and outer air pressure difference can be made larger, further increase radiating effect.
As what optimize, heat-conducting block is provided with installing hole, by screw through lug and installing hole fixed support, prevents high-power COB light source to be subjected to displacement and the phenomenon of warpage occurs because of middle part pressurized.
As what optimize, the edge of heat-conducting block is provided with open slot, like this, forms the air-flow of up/down perforation, to improve radiating effect between above and below heat-conducting block.
As what optimize, be provided with external screw thread in the upper end of radiator, be provided with internal thread in the bottom of radiator.Described external screw thread is for connecting gland, and internal thread is for connecting lamp holder, and adopt the mode of screw thread to connect, be then easy for installation and removal LED spotlight.
As what optimize, be positioned to be provided with above internal thread in the bottom of radiator and keep out ring.When installing lamp holder, the degree of depth of lamp holder screw-in can be limited by keeping out ring.
As what optimize, above heat-conducting block, be provided with more than one radiating groove, be provided with more than one radiating groove in the below of heat-conducting block.This structure, the heat on heat-conducting block from above and below can dispel the heat, therefore, good heat dissipation effect.
Accompanying drawing explanation
Fig. 1 is the stereogram of LED spotlight.
Fig. 2 is the exploded view of LED spotlight.
Fig. 3 is the front view of LED spotlight.
Fig. 4 is LED spotlight A-A sectional view.
Fig. 5 is the stereogram of radiator.
Fig. 6 is the exploded view of radiator.
Fig. 7 is the front view of radiator.
Fig. 8 is the top view of radiator.
Fig. 9 is radiator B-B sectional view.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
As shown in Figures 1 to 4, LED spotlight comprises radiator 1, lamp holder 2, high-power COB light source 3, reflector 4, eyeglass 5, gland 6 and power supply 7.
As shown in Figures 5 to 9, radiator comprises radiator 11 and heat-conducting block 12.Radiator 11 comprises housing 111 and fin 112; There is in housing 111 cavity 113; The cross section of housing 111 is circular, and the upper end diameter of housing 111 is greater than lower end diameter; Housing 111 inwall is provided with the draw-in groove 114 of annular, heat-conducting block 12 adopts red metal manufacture to form, heat-conducting block 12 passes through interference fit holding in draw-in groove 114, and there is excellent ductility and small plastic deformation can occur due to the material of heat-conducting block and aluminium base, make heat-conducting block and housing 111 energy close contact, improve the speed of heat transfer; Housing 111 is provided with the connection cavity 113 and extraneous radiating groove 115 that more than two roads are circular layout, and the inside dimensions in radiating groove 115 cross section is greater than side dimension flare, and radiating groove 115 inside edge is provided with chamfering 116; In the present embodiment, radiating groove is three roads, is wherein positioned at the top of heat-conducting block 12 together, and twice are positioned at the below of heat-conducting block 12 in addition; Fin 112 is vertical on the outer wall of housing 111 extends uniform setting, has 2mm gap between abutting fins; The upper end of housing 11 has the ventilation slot 117 communicated with gap; The upper end of housing 11 is also provided with step 118; Be provided with internal thread 119 in the bottom of housing 11, be positioned to be provided with above internal thread in housing 111 and keep out ring 1110; External screw thread 1111 is provided with in the upper end of fin.Heat-conducting block 12 upper surface is provided with the accommodating cavity 121 consistent with aluminium base shape; Heat-conducting block 12 is provided with installing hole 122; The edge of heat-conducting block 12 is provided with open slot 123.
Described lamp holder 2 is installed to the lower end of radiator 11 by the mode screwed in, and the degree of depth that lamp holder 2 screws in limits by keeping out ring 1110.
Described high-power COB light source 3 comprises support 31, aluminium base 32 and LED chip, and aluminium base 32 is arranged on support 31; Support 31 has lug 33.Aluminium base 31 is mounted in accommodating cavity 121 by interference fit, and utilize screw to pass lug 33 and support is fixed on heat-conducting block 12 by installing hole 122, like this, just do not need heat-conducting glue fixed support, and support can contact closely with heat-conducting block, make the transmission area high-power COB light source producing heat larger, to improve radiating effect.
The lower end of reflector 4 contacts with in the middle part of support 31, the flange of reflector 4 upper end is located on step 118, and before installation gland, flange and step have gap, eyeglass 5 is located on reflector 4, gland 6 is threaded connection on radiator, when gland 6 is expressed on eyeglass 5, eyeglass 5 extrudes reflector 4, reflector 4 extrusion rack, and because of the material ductility of aluminium base and heat-conducting block good, therefore, support extruded aluminium substrate makes aluminium base and heat-conducting block generation plastic deformation, impel aluminium base and heat-conducting block close contact, and long-time after can produce molecular diffusion at both faying faces and form Copper-Aluminum compound layer at faying face place, both can be combined closely, realize the object of interference fit by arranging accommodating cavity simultaneously, like this, the fixing of aluminium base does not need heat-conducting glue, therefore, the heat that high-power COB light source produces can be delivered on heat-conducting block fast, and the speed of its transferring heat can not change because of the length of service time, thus improve the service life of LED spotlight.
Described power supply 7 is arranged in cavity.
During above-mentioned LED spotlight work, high-power COB light source 3 and power supply 7 can produce heat, the heat part produced is passed on radiator, scattered and disappeared by radiator, another part is then diffused in cavity 113, air themperature in cavity 113 is raised, and when there is temperature difference, then air can flow to low-temperature space and form air-flow from high-temperature region, like this, air in cavity 113 can flow to extraneous through radiating groove and ventilation slot, radial air-flow is formed in cavity 113, and, owing to being provided with gap slot on heat-conducting block 12, therefore, also axial air-flow can be formed in cavity, thus take temperature out of cavity, improve radiating effect, meanwhile, because radiating groove is tubaeform, therefore, pressure reduction can be formed inside and outside radiating groove, thus improve the intensity of air-flow, finally reach the object improving radiating effect.
Claims (8)
1. a LED spotlight, comprises radiator, lamp holder, high-power COB light source, reflector, eyeglass, gland and power supply; Lamp holder is connected to the lower end of radiator; High-power COB light source comprises support, aluminium base and LED chip, and aluminium base is rack-mount, and LED chip is located on aluminium base; It is characterized in that: radiator comprises radiator and heat-conducting block; Radiator comprises housing and fin, housing has a cavity, housing is provided with the connection cavity and extraneous radiating groove that more than two roads are circular layout, the inside dimensions in radiating groove cross section is greater than side dimension flare, housing upper end is provided with step, described fin is vertically extended on the outer wall of housing, has the gap of 1.5-2.5mm between abutting fins; The inwall of housing is provided with draw-in groove; Heat-conducting block adopts red metal manufacture to form, and heat-conducting block is by interference fit holding in draw-in groove, and heat-conducting block upper surface is provided with accommodating cavity; Aluminium base is embedded in accommodating cavity by interference fit, and support is fixed on heat-conducting block by the lug on support; Reflector has flange, flange is positioned at the top of step, eyeglass is located on reflector, gland be arranged on radiator upper end and and lens contacts, installation gland before, flange and step have gap, after gland is installed, gland extruding eyeglass, eyeglass extruding reflector, reflector extrusion rack, support extruded aluminium substrate makes aluminium base and heat-conducting block generation plastic deformation.
2. LED spotlight according to claim 1, is characterized in that: the upper end of housing has the ventilation slot communicated with gap.
3. LED spotlight according to claim 1, is characterized in that: on radiating groove inside edge, be provided with chamfering.
4. LED spotlight according to claim 1, is characterized in that: on heat-conducting block, be provided with installing hole, by screw through lug and installing hole fixed support.
5. the LED spotlight according to any one of claim 1-4, is characterized in that: the edge of heat-conducting block is provided with open slot.
6. LED spotlight according to claim 1, is characterized in that: be provided with external screw thread in the upper end of radiator, is provided with internal thread in the bottom of radiator, and lamp holder is threaded connection the lower end at radiator, and gland is threaded connection the upper end at radiator.
7. LED spotlight according to claim 6, is characterized in that: be positioned to be provided with above internal thread in the bottom of radiator and keep out ring.
8. LED spotlight according to claim 5, is characterized in that: above heat-conducting block, be provided with more than one radiating groove, is provided with more than one radiating groove in the below of heat-conducting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310149115.2A CN103196119B (en) | 2013-04-26 | 2013-04-26 | A kind of LED spotlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310149115.2A CN103196119B (en) | 2013-04-26 | 2013-04-26 | A kind of LED spotlight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103196119A CN103196119A (en) | 2013-07-10 |
| CN103196119B true CN103196119B (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310149115.2A Active CN103196119B (en) | 2013-04-26 | 2013-04-26 | A kind of LED spotlight |
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| Country | Link |
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| CN (1) | CN103196119B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247195A (en) * | 2016-09-27 | 2016-12-21 | 正屋(厦门)电子有限公司 | A kind of lamp holder fit structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2503606Y (en) * | 2001-08-23 | 2002-07-31 | 富准精密工业(深圳)有限公司 | Heat sink base |
| CN2869562Y (en) * | 2006-01-18 | 2007-02-14 | 吴敏 | Lighting, decorative LED projection lamp |
| CN202901971U (en) * | 2012-11-20 | 2013-04-24 | 宣炯华 | Light-emitting diode (LED) light |
-
2013
- 2013-04-26 CN CN201310149115.2A patent/CN103196119B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2503606Y (en) * | 2001-08-23 | 2002-07-31 | 富准精密工业(深圳)有限公司 | Heat sink base |
| CN2869562Y (en) * | 2006-01-18 | 2007-02-14 | 吴敏 | Lighting, decorative LED projection lamp |
| CN202901971U (en) * | 2012-11-20 | 2013-04-24 | 宣炯华 | Light-emitting diode (LED) light |
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| Publication number | Publication date |
|---|---|
| CN103196119A (en) | 2013-07-10 |
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Address after: 510800 Guangzhou, Huadu District, Huadu District, Guangdong, SAST Road, No. 1, room No. 302 Patentee after: Guangzhou LEDIA lighting Limited by Share Ltd Address before: 510800 Guangdong, Huadu District, Xinhua Street, commercial road, room No. 350, room 1, No. Patentee before: Guangzhou Ledia Lighting Technology Company |
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| CP03 | Change of name, title or address |