CN204042633U - A kind of LED down - Google Patents
A kind of LED down Download PDFInfo
- Publication number
- CN204042633U CN204042633U CN201420274855.9U CN201420274855U CN204042633U CN 204042633 U CN204042633 U CN 204042633U CN 201420274855 U CN201420274855 U CN 201420274855U CN 204042633 U CN204042633 U CN 204042633U
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- CN
- China
- Prior art keywords
- fin
- led
- substrate
- reflector
- radiator
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- 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.)
- Expired - Fee Related
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- Fastening Of Light Sources Or Lamp Holders (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The utility model discloses a kind of LED down, comprise radiator, substrate, LED, reflector, pressure ring, transmissive mirror and spring assembly.Radiator has radiating shell and fin, and the lower fin that fin is gradually changed by upper fin and the spiral angle of planar shaped forms; Substrate is located in the light-source chamber of radiator, LED is located on substrate, substrate is suppressed with the plastic cement pressing plate with accommodating cavity and loophole, reflector to be located in power source cavity and to contact with plastic cement casting die, pressure ring is established on a heat sink, spring assembly comprises holder, plug-in unit, fastener, connecting pin and torsion spring, and plug-in unit is located on holder by the mode of grafting.Structure of the present utility model can better protective substrate and LED, improves radiating effect, is convenient to mount and dismount elastic parts, is convenient to keep in repair elastic parts.
Description
Technical field
The utility model relates to LED down.
Background technology
Existing a kind of LED down is primarily of radiator, substrate, LED, reflector composition, and wherein substrate is established on a heat sink, and LED is located on substrate, and reflector is located in radiator and directly contacts with substrate, and utilizes pressure ring to suppress reflector.Defect existing for the LED down of this structure is: reflector directly and substrate contacts, easily damages substrate and LED by pressure.
And for LED down, improve the life-span of LED down, light efficiency etc., heat radiation is its important part, therefore, substantially radiator is included in existing LED down, existing a kind of radiator comprises housing and is located at the fin on housing, wherein fin has plane formula, also have screw type, when LED down operationally, the effect of heat radiation can be played at housing and fin, also can form convection current between abutting fins simultaneously, thus improve radiating effect further, but, LED down is generally mounted in smallpox, and distinguished and admirable little in smallpox, therefore, the effect of convection current is not clearly, make radiating effect neither be clearly.
In addition, the spring secures rail to sleeper in existing LED down comprises holder and torsion spring fastener, and torsion spring fastener is located on holder, and this spring secures rail to sleeper is all inconvenient when mounting and dismounting, and maintenance is also inconvenient.
Summary of the invention
In order to better protective substrate and LED, improve radiating effect, be convenient to mount and dismount elastic parts, be convenient to keep in repair elastic parts, the utility model provides a kind of LED down.
For achieving the above object, a kind of LED down, comprise radiator, substrate, LED, reflector, pressure ring, transmissive mirror and spring assembly, radiator has light-source chamber, and substrate is arranged on the bottom of light-source chamber, and LED is located on substrate, reflector is located in light-source chamber, pressure ring is arranged on the opening part of radiator and is compressed on reflector, and transmissive mirror is located in pressure ring, and spring assembly is arranged on pressure ring; Plastic cement casting die is provided with bottom light-source chamber and between reflector; Described plastic cement casting die is provided with accommodating cavity and loophole, and described substrate is positioned at accommodating cavity, and LED is positioned at loophole, and reflector contacts with plastic cement casting die; Radiator comprises radiating shell and the fin of more than two of circle distribution outside radiating shell; The top of radiating shell is cylindrical, and the bottom of radiating shell is bowl-shape; Described fin comprises fin and lower fin, upper fin be distributed in be positioned at cylindrical heat-radiating housing outer wall on, lower fin be distributed in be positioned at bowl-shape radiating shell outer wall on; Upper fin in axial direction extends in plane, and lower fin is curved downwards from the lower end of upper fin, and the outward flange of lower fin from up to down helical angle increase gradually; Elastic parts comprises holder, plug-in unit, fastener, connecting pin and torsion spring, described holder is fixed on pressure ring, plug-in unit is plugged on holder, fastener is hinged on plug-in unit by your connecting pin, torsion spring set is on connecting pin, and one end holding of torsion spring is on plug-in unit, the other end holding of torsion spring is on fastener.
Said structure, plastic cement casting die is provided with between bottom reflector and light-source chamber, its plastic cement casting die has accommodating cavity, prevents reflector from directly contacting and damaged substrate and LED with substrate on the one hand, utilize accommodating cavity to be convenient to position installation to substrate on the other hand.After LED down installs, when the LED down of said structure works, except radiating shell and fin can play except the effect of heat radiation, due to heat sink design is become said structure, therefore, distinguished and admirablely easily flow between adjacent lower fin downwards from entering between adjacent upper fin, and due to lower fin curved, and the outward flange of lower fin from up to down helical angle increase gradually, like this, along with distinguished and admirable flow downward gradually brush up against lower fin side time, easily form eddy flow in the lower end of radiating shell, accelerate scattering and disappearing to heat, thus raising radiating effect.It should be noted that, in the utility model, LED chip is mounted in the lower end of cylindrical heat-radiating housing, and therefore, the heat of cylindrical heat-radiating housing lower end is large, and the heat of radiating shell lower end is little, like this, easily forms top-down distinguished and admirable.In addition, because plug-in unit is plugged on holder, therefore, plug-in unit, fastener, torsion spring and connecting pin can be installed on holder as a whole easily and can disassemble from holder easily, also bring conveniently to maintenance.
Further, plastic cement casting die is positioned at outside accommodating cavity is provided with escape groove.Owing to being provided with escape groove, be therefore convenient on the electrode of the substrate that wire is connected through escape groove, to realize being electrically connected.
Further, radiating shell end face has the cavity of indent downwards, and the position corresponded to bottom light-source chamber, the center of cavity is provided with bulge loop upwards, and the inwall from the outer wall of flange to cavity is provided with the radiating ribs of circle distribution.This structure, bottom bulge loop corresponding light source chamber, and for installing LED chip bottom light-source chamber, therefore, the heat that LED chip produces is easy to be delivered in bulge loop, and the heat being delivered to bulge loop is delivered in radiating ribs through bulge loop to surrounding diffusion part heat, makes radiating effect better.
Further, the outside of radiating ribs is higher than inner side.
Further, holder is provided with the first installing hole, plug-in unit is provided with the second installing hole.After on holder planted by plug-in unit, the connection of plug-in unit and holder can be allowed more reliable, firm by mounting screw on the first installing hole and the second installing hole.
Further, the external part downsagging of fastener.This structure, when fastener resets, the external part of fastener first contacts ceiling, and like this, the reset amount of torsion spring reduces relatively, and the elastic force that torsion spring is applied on fastener is larger, and therefore, the installation of LED down is more firm.
Accompanying drawing explanation
Fig. 1 is the stereogram of LED down.
Fig. 2 is the exploded view of LED down.
Fig. 3 is the exploded view at another visual angle of LED down.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
As shown in Figure 1 to Figure 3, LED down comprises radiator 1, substrate 2, LED 3, plastic cement casting die 4, reflector 5, pressure ring 6, transmissive mirror 7, spring assembly 8 and cover plate 9."up" and "down" described in the utility model is as the criterion with the position shown in Fig. 2.
As shown in Figures 2 and 3, radiator 1 comprises radiating shell 11 and the fin 12 of more than two of circle distribution outside radiating shell; The top of radiating shell 11 is cylindrical, and the bottom of radiating shell 11 is bowl-shape; In radiating shell 11, have light-source chamber 111, light-source chamber 111 has bottom 112, and the bottom 112 of light-source chamber is positioned at the lower end of cylindricity radiating shell 11.Described fin 12 comprises fin 121 and lower fin 122, upper fin 121 be distributed in be positioned at cylindrical heat-radiating housing outer wall on, lower fin 122 be distributed in be positioned at bowl-shape radiating shell outer wall on; Upper fin 121 in axial direction extends in plane, and lower fin 122 is curved downwards from the lower end of upper fin, and the outward flange of lower fin 122 from up to down helical angle increase gradually.Radiating shell 11 end face has the cavity 113 of indent downwards, and the position corresponded to bottom light-source chamber, the center of cavity 113 is provided with bulge loop 114 upwards, and the inwall from the outer wall of flange to cavity is provided with the radiating ribs 115 of circle distribution; The outside of radiating ribs 115 is higher than inner side.
Described substrate 2 is arranged on the bottom 112 of light-source chamber.LED3 installs on a substrate 2.Described plastic cement casting die 4 is provided with accommodating cavity 41 and loophole 42, accommodating cavity 41 is positioned at outside loophole 42, plastic cement casting die 4 is positioned at the escape groove 43 being provided with outside accommodating cavity and communicating with accommodating cavity, described substrate 2 is positioned at accommodating cavity 41, LED 3 is positioned at loophole 42, and plastic cement casting die 4 is suppressed on a substrate 2 and allowed LED 3 expose.Reflector 5 to be located in light-source chamber 112 and to contact with plastic cement casting die 4.Pressure ring 6 is arranged on the opening part of radiator and is compressed on reflector 5.Transmissive mirror 7 is located in pressure ring 6.
As shown in Figures 2 and 3, spring assembly 8 comprises holder 81, plug-in unit 82, fastener 83, connecting pin 84 and torsion spring 85, holder 81 is located on pressure ring 6, holder is provided with the first installing hole, plug-in unit 82 is plugged on holder 81, plug-in unit 82 is provided with second installing hole corresponding with the first position of mounting hole, plug-in unit 82 can be allowed more reliable with the connection of holder 81 by mounting screw on the first installing hole and the second installing hole, firmly, and can realize better locating plug-in unit 82, fastener 83 is hinged on plug-in unit 82 by connecting pin 84, the external part downsagging of fastener, torsion spring 85 is enclosed within connecting pin 84, and one end holding is on plug-in unit 82, other end holding is on fastener 83.When installing LED down, pull fastener 83, the upper end of protection type LED down is put into the top of smallpox through the hole of smallpox, then under the effect of torsion spring, fastener 83 resets, the edge clamping of fastener 83 and pressure ring is utilized to be held on the edge in smallpox hole, realize the fixed installation to protection type LED down, and due to the external part downsagging of fastener, when fastener 83 resets, the external part of fastener 83 first contacts ceiling, like this, the reset amount of torsion spring 85 reduces relatively, the elastic force that torsion spring 85 is applied on fastener 83 is larger, therefore, the installation of LED down is more firm.Cover plate 9 is located in cavity 113.
In the present embodiment, owing to being provided with plastic cement casting die 4 between 112 bottom reflector 5 and light-source chamber, its plastic cement casting die has accommodating cavity 41, prevent reflector 5 from directly contacting and damaged substrate 2 and LED 3 with substrate 2 on the one hand, utilize accommodating cavity 41 to be convenient to position installation to substrate 2 on the other hand.In addition, owing to being provided with escape groove 43, be therefore convenient on the electrode of the substrate that wire is connected through escape groove, to realize being electrically connected.
During LED down work, except radiating shell 11 and fin 12 can play except the effect of heat radiation, due to fin 12 is designed to said structure, therefore, distinguished and admirablely easily flow between adjacent lower fin downwards from entering between adjacent upper fin 12, and due to lower fin curved, and the outward flange of lower fin from up to down helical angle increase gradually, like this, along with distinguished and admirable flow downward gradually brush up against lower fin side time, easily form eddy flow in the lower end of radiating shell, accelerate scattering and disappearing to heat, thus improve radiating effect.It should be noted that, in the utility model, LED chip is mounted in the lower end of cylindrical heat-radiating housing, and therefore, the heat of cylindrical heat-radiating housing lower end is large, and the heat of radiating shell lower end is little, like this, easily forms top-down distinguished and admirable.Meanwhile, bottom bulge loop corresponding light source chamber, and for installing LED chip bottom light-source chamber, therefore, the heat that LED chip produces is easy to be delivered in bulge loop, and the heat being delivered to bulge loop is delivered in radiating ribs through bulge loop to surrounding diffusion part heat, makes radiating effect better.
Claims (2)
1. a LED down, comprise radiator, substrate, LED, reflector, pressure ring, transmissive mirror and spring assembly, radiator has light-source chamber, substrate is arranged on the bottom of light-source chamber, LED is located on substrate, and reflector is located in light-source chamber, and pressure ring is arranged on the opening part of radiator and is compressed on reflector, transmissive mirror is located in pressure ring, and spring assembly is arranged on pressure ring; It is characterized in that: bottom light-source chamber and between reflector, be provided with plastic cement casting die; Described plastic cement casting die is provided with accommodating cavity and loophole, and described substrate is positioned at accommodating cavity, and LED is positioned at loophole, and reflector contacts with plastic cement casting die; Radiator comprises radiating shell and the fin of more than two of circle distribution outside radiating shell; The top of radiating shell is cylindrical, and the bottom of radiating shell is bowl-shape; Described fin comprises fin and lower fin, upper fin be distributed in be positioned at cylindrical heat-radiating housing outer wall on, lower fin be distributed in be positioned at bowl-shape radiating shell outer wall on; Upper fin in axial direction extends in plane, and lower fin is curved downwards from the lower end of upper fin, and the outward flange of lower fin from up to down helical angle increase gradually; Elastic parts comprises holder, plug-in unit, fastener, connecting pin and torsion spring, described holder is fixed on pressure ring, plug-in unit is plugged on holder, fastener is hinged on plug-in unit by your connecting pin, torsion spring set is on connecting pin, and one end holding of torsion spring is on plug-in unit, the other end holding of torsion spring is on fastener.
2. LED down according to claim 1, is characterized in that: be positioned on plastic cement casting die outside accommodating cavity and be provided with escape groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420274855.9U CN204042633U (en) | 2014-05-27 | 2014-05-27 | A kind of LED down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420274855.9U CN204042633U (en) | 2014-05-27 | 2014-05-27 | A kind of LED down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204042633U true CN204042633U (en) | 2014-12-24 |
Family
ID=52243293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420274855.9U Expired - Fee Related CN204042633U (en) | 2014-05-27 | 2014-05-27 | A kind of LED down |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204042633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972520A (en) * | 2016-06-29 | 2016-09-28 | 合肥鑫烁科技有限公司 | LED ceiling down lamp |
-
2014
- 2014-05-27 CN CN201420274855.9U patent/CN204042633U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972520A (en) * | 2016-06-29 | 2016-09-28 | 合肥鑫烁科技有限公司 | LED ceiling down lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 510800 Guangzhou, Huadu District, Huadu District, Guangdong, SAST Road, No. 1, room No. 302 Patentee after: GUANGZHOU LEDIA LIGHTING Co.,Ltd. Address before: 510800 Guangdong, Huadu District, Xinhua Street, commercial road, room No. 350, room 1, No. Patentee before: GUANGZHOU LEDIA LIGHTING TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |