CN102095113A - Power type LED (Light Emitting Diode) lamp with high heat conducting property - Google Patents
Power type LED (Light Emitting Diode) lamp with high heat conducting property Download PDFInfo
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- CN102095113A CN102095113A CN2011100561303A CN201110056130A CN102095113A CN 102095113 A CN102095113 A CN 102095113A CN 2011100561303 A CN2011100561303 A CN 2011100561303A CN 201110056130 A CN201110056130 A CN 201110056130A CN 102095113 A CN102095113 A CN 102095113A
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Abstract
The invention relates to a high-power LED (Light Emitting Diode) lamp with a high heat conducting property, which comprises a joint, an LED driver, an LED baseplate, LED light sources, a bulb cover and a heat radiating ring, wherein the LED driver is electrically connected with the LED baseplate; the LED light sources are positioned in the bulb cover; the upper end of the heat radiating ring is connected with the joint, and the lower end of the heat radiating ring is connected with the bulb cover; the inner wall at the lower end of the heat radiating ring is connected with the LED baseplate; the top surface of the LED baseplate is connected with a heat conducting piece; the heat conducting piece is connected with the heat radiating ring; multiple grooves are arranged on the bottom surface of the LED baseplate side by side; reflecting layers for reflecting and focusing light rays of the LED light sources are arranged on the inner walls of the grooves; and the LED light sources are positioned in the grooves. The high-power LED lamp provided by the invention has the advantages of simple structure, higher heat radiating efficiency and high light utilization rate, and the service life is prolonged.
Description
Technical field
The present invention relates to a kind of power type LED lamp.
Background technology
Existing LED bulb; more high-power in order to realize; usually radiating element can be set on bulb; because the high-power LED bulb can produce bigger heat when work; if can not in time waste heat be discharged; can cause led chip shortening in service life, shorten the service life of LED bulb greatly.
Existing radiating element, for example number of patent application is the Chinese patent application of 200910115650.X, a kind of heat-dissipating cylinder structure is disclosed, the inner chamber upper and lower fuses respectively, the reflection shape uprightly is arranged in the sheet metal of cylinder and forms, heat-dissipating cylinder and lamp holder are located by connecting, and after lamp holder machines, heat-dissipating cylinder are connected with the lamp holder assembling usually again; The technological deficiency of its existence is: complex structure, manufacturing process trouble, cost height and radiating efficiency is lower, service life is shorter.
Existing LED substrate adopts the good material of heat conductivility usually, for example ceramic, described LED substrate adopts square usually, described substrate is provided with electric power connection interface, described electric power connection interface is electrically connected with electric power connection line, and described substrate is provided with printed circuit, a plurality of led chips of arranged on the described substrate, described led chip comprises current-limiting resistance and voltage-stablizer, and described current-limiting resistance all is connected with described printed circuit with voltage-stablizer.The defective that exists is: be provided with because whole base plate is the plane, light utilization efficiency is lower, and heat dispersion is relatively poor.
Summary of the invention
For the deficiency that complex structure, radiating efficiency are lower, light utilization efficiency is lower, service life is short that overcomes existing LED lamp, the invention provides a kind of simple in structure, radiating efficiency is higher, light utilization efficiency is high, the power type LED lamp of the high thermal conductivity that increases the service life.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of power type LED lamp of high thermal conductivity, comprise joint, led driver, LED substrate, led light source and bulb shield, described led driver is electrically connected with described LED substrate, described led light source is positioned at described bulb shield, described power type LED lamp also comprises heat dissipating ring, the upper end of described heat dissipating ring is connected with described joint, the lower end of described heat dissipating ring is connected with described bulb shield, the lower end inwall of described heat dissipating ring is connected with described LED substrate, the end face of described LED substrate connects heat-conducting piece, and described heat-conducting piece is connected with described heat dissipating ring; The bottom surface of described LED substrate a plurality of grooves that are arranged side by side, described groove inwall are provided with in order to reflection led light source light and the reflecting layer that focuses on, and described led light source is positioned at described groove.
Further, the end face of described heat-conducting piece and described LED substrate is one.
Further again, described heat-conducting piece is a heat conducting bar, and the bottom of described heat dissipating ring is provided with the heat conduction slot, and described heat conducting bar is plugged in the described heat conduction slot.
Described heat-conducting piece is the heat conduction cover, and described heat conduction cover is connected with described heat dissipating ring inwall.
Described heat-conducting piece is the heat conduction cover, and the bottom of described heat dissipating ring is provided with the heat conduction cannelure, and described heat conduction cover is plugged in the described heat conduction cannelure.
The cross section semicircular in shape of described groove or parabola shaped.
Be provided with heat-conducting layer between described groove inwall and the reflecting layer, the upper end of described heat-conducting layer is lower than the bottom surface of described LED substrate, and described printed wire is arranged on the bottom surface of described LED substrate.
The drive circuit of described led driver comprises first electric capacity, first resistance, rectification circuit, filter capacitor and second resistance, the civil power incoming end is connected with described first electric capacity, described first resistance and the first electric capacity parallel connection, the other end of described first electric capacity is connected with the input side of described rectification circuit, the two ends of the outlet side of described rectification circuit are connected with filter capacitor, described second resistance is in parallel with described filter capacitor, and the two ends of described filter capacitor are connected with two drive circuit output interfaces.
The drive circuit of described led driver comprises first electric capacity, first resistance, rectification circuit, filter capacitor, second resistance and power factor promote circuit, the civil power incoming end is connected with described first electric capacity, described first resistance and the first electric capacity parallel connection, the other end of described first electric capacity is connected with the input side of described rectification circuit, the positive terminal of the outlet side of described rectification circuit is connected with second resistance, one end and filter capacitor are anodal simultaneously, the negative pole end of the outlet side of described rectification circuit connects with the described second resistance other end, described power factor promotes circuit and comprises second diode, the 3rd diode, the 4th diode and auxiliary filter capacitor, the negative pole of described filter capacitor is connected with the backward end of second diode and the forward end of the 3rd diode simultaneously, the forward end of described second diode is connected with the negative pole end of the outlet side of described rectification circuit, the positive terminal of the outlet side of described rectification circuit is connected with the backward end of the 4th diode, the backward end while of described the 3rd diode and the forward end of the 4th diode, the positive pole of auxiliary filter capacitor connects, the negative pole of described auxiliary filter capacitor is connected with the negative pole end of the outlet side of described rectification circuit, and the described second resistance two ends are connected with two drive circuit output interfaces.
One end of described filter capacitor connects current-limiting resistance, and described current-limiting resistance is connected the bridge rectifier of described rectification circuit with a drive circuit output interface.
Beneficial effect of the present invention mainly shows: 1, simple in structure, radiating efficiency is higher, increase the service life; 2, improve light utilization efficiency, lifting heat dispersion; 3, owing to avoid adopting transformer, simplified the circuit composition, the no higher-order of oscillation, electromagnetic-radiation-free have reduced energy consumption, have improved power supply conversion efficiency simultaneously; 4, adopt current-limiting resistance, when supply voltage generation unusual fluctuations, effectively reduce the operating current of LED lamp, play the effect of protection LED; 5, add the power factor of forming by three diodes and the 3rd electric capacity and promote circuit, can effectively adapt to the High Power Factor occasion.
Description of drawings
Fig. 1 is the schematic diagram of the power type LED lamp of high thermal conductivity.
Fig. 2 is a kind of schematic cross-section of heat dissipating ring.
Fig. 3 is the schematic cross-section of another kind of heat dissipating ring.
Fig. 4 is the basic structural representation of great power LED.
Fig. 5 is a kind of scheme of installation of single led light source.
Fig. 6 is the scheme of installation of another kind of single led light source.
Fig. 7 is the scheme of installation of another single led light source.
Fig. 8 is the schematic diagram of the drive circuit of little electric current high-voltage LED lamp.
Fig. 9 is the schematic diagram of drive circuit of the little electric current high-voltage LED lamp of High Power Factor.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1～Fig. 9, a kind of power type LED lamp of high thermal conductivity, comprise joint 1, led driver 2, LED substrate 3, led light source 4 and bulb shield 5, described led driver 1 is electrically connected with described LED substrate 3, described led light source 4 is positioned at described bulb shield 5, described power type LED lamp also comprises heat dissipating ring 6, the upper end of described heat dissipating ring 6 is connected with described joint 1, the lower end of described heat dissipating ring 6 is connected with described bulb shield 5, the lower end inwall of described heat dissipating ring 6 is connected with described LED substrate 3, the end face of described LED substrate 3 connects heat-conducting piece 7, and described heat-conducting piece 7 is connected with described heat dissipating ring 6; The bottom surface of described LED substrate 3 a plurality of grooves 8 that are arranged side by side, described groove 8 inwalls are provided with in order to reflection led light source light and the reflecting layer that focuses on, and described led light source 4 is positioned at described groove 8.
Preferably, described heat-conducting piece 7 is one with described LED substrate 3.
Described heat-conducting piece 7 is a heat conducting bar, and the bottom of described heat dissipating ring is provided with the heat conduction slot, and described heat conducting bar is plugged in the described heat conduction slot.
Described heat conducting bar has at least two, and every heat conducting bar is along uniformly-spaced arranging in one week of LED substrate.
Or: described heat-conducting piece 7 is the heat conduction cover, and described heat conduction cover is connected with described heat dissipating ring inwall.
Described heat-conducting piece is the heat conduction cover, and the bottom of described heat dissipating ring is provided with the heat conduction cannelure, and described heat conduction cover is plugged in the described heat conduction cannelure.
Certainly, described heat-conducting piece 7 can also be for other shape structures, as long as it can be transmitted to heat dissipating ring with the heat on the LED substrate.
The wall of described heat dissipating ring 6 bottoms is thicker than the wall on top, and this structure helps heat radiation.Certainly, heat dissipating ring also can adopt the wall uniform thickness, perhaps other modes.
The cross section of described heat dissipating ring 6 is rounded, square, rhombus, ellipse or regular polygon.Certainly, also can adopt other shapes.
The LED substrate of present embodiment can adopt metal matter substrate (being mainly aluminium alloy base plate), pottery substrate or PCB substrate (being mainly papery and fiber, resinae substrate), also can adopt other conventional substrates.
In the present embodiment, heat dissipating ring 6 has good heat conductive performance and thermal radiation property, heat in time can be got rid of, and the heat on the LED substrate is in time got rid of by heat-conducting piece, has good heat-conducting, has effectively guaranteed the LED operating temperature, has prolonged service life.
The LED substrate 3 sole arrangement printed circuits of present embodiment, described printed wire is connected with described led light source 4, the bottom surface of described LED substrate a plurality of grooves 8 that are arranged side by side, described groove 8 inwalls are provided with the reflecting layer 9 in order to reflection led light source light and focusing, and described led light source 4 is positioned at described groove 8.
The cross section semicircular in shape of described groove 8 or parabola shaped.The semicircle or the parabola shaped structure of falling can be carried out light the good focusing reflection, have improved light utilization greatly; Groove structure has increased area of dissipation simultaneously, has improved radiating effect simultaneously.
Aluminium coated can be adopted in the reflecting layer 9 of present embodiment, certainly, also can adopt other reflected coat layer structures such as zinc-plated or nickel plating.
Be provided with heat-conducting layer 10 between described groove 8 inwalls and the reflecting layer 9, the upper end of described heat-conducting layer is lower than the bottom surface of described LED substrate, and described printed wire is arranged on the bottom surface of described LED substrate; Heat-conducting layer 6 can not contact with printed wire, otherwise causes short trouble easily.
Described heat-conducting layer 10 has good heat-conducting, the heat that led chip produces in time can be discharged, and has promoted heat dispersion, and described heat-conducting layer is preferably copper product, certainly, also can adopt other heat conductivility excellent material.
Described led chip is positioned at the bottom of described groove 8, and is preferred, and in order to improve radiating effect, the bottom surface of described led chip and described bottom portion of groove are fitted, and certainly, can not fit with described bottom portion of groove in the bottom surface of described led chip yet.
Described LED substrate is 3 rounded, rhombus, ellipse or square.Certainly, also can adopt other shapes.In addition, the big I of described substrate body is determined according to the quantity of led chip.
Described substrate body the side have approaching channel 11, described power interface is positioned at described approaching channel 11, described power interface is connected with described printed wire.Described approaching channel 11 can be one, also can two or more be set as required.
With reference to Fig. 7, the drive circuit of led driver 2, comprise first capacitor C 1, first resistance R 1, rectification circuit D1, filter capacitor C2 and second resistance R 2, the civil power incoming end is connected with described first capacitor C 1, described first resistance R 1 and 1 parallel connection of first capacitor C, the other end of described first capacitor C 1 is connected with the input side of described rectification circuit D1, the two ends of the outlet side of described rectification circuit D1 are connected with filter capacitor C2, described second resistance R 2 is in parallel with described filter capacitor C2, and the two ends of described filter capacitor C2 are connected with two drive circuit output interfaces.
The end of described filter capacitor C2 connects current-limiting resistance R3, and described current-limiting resistance R3 is connected with a drive circuit output interface.Described rectification circuit D1 is a bridge rectifier.Certainly, also can select for use other rectification circuits commonly used to realize.
In the present embodiment, with respect to prior art, do not adopt IC chip and transformer, adopt the capacitance-resistance mode to come step-down, obtain dc source by rectifying and wave-filtering again after the step-down, this dc source provides little electric current high-voltage LED lamp to drive, and existing do not have high-frequency agitation source for available circuit, thereby do not have high frequency radiation, the required voltage and current parameter of led light source work is adjusted by the capacitance numerical value in the circuit (first capacitor C 1); Preferably, the output of power supply is through series resistance current limliting rear drive led light source.
With reference to Fig. 8, led driver 2 comprise first capacitor C 1, first resistance R 1, rectification circuit D1, the filter capacitor C2 and second resistance R 2, the civil power incoming end is connected with described first capacitor C 1, described first resistance R 1 and 1 parallel connection of first capacitor C, the other end of described first capacitor C 1 is connected with the input side of described rectification circuit D1, the positive terminal of the outlet side of described rectification circuit D1 is connected with second resistance R, 2 one ends and second capacitor C, 2 positive poles simultaneously, the negative pole end of the outlet side of described rectification circuit D1 is connected with described second resistance R, 2 other ends, described power factor promotes circuit and comprises the second diode D2, the 3rd diode D3, the 4th diode D4 and auxiliary filter capacitor C3, the negative pole of described filter capacitor C2 is connected with the backward end of the second diode D2 and the forward end of the 3rd diode D3 simultaneously, the forward end of the described second diode D2 is connected with the negative pole end of the outlet side of described rectification circuit, the positive terminal of the outlet side of described rectification circuit D1 is connected with the backward end of the 4th diode D4, the backward end while of described the 3rd diode D3 and the forward end of the 4th diode D4, the positive pole of auxiliary filter capacitor C3 connects, the negative pole of described auxiliary filter capacitor C3 is connected with the negative pole end of the outlet side of described rectification circuit, and described second resistance R 2 two ends are connected with two drive circuit output interfaces.
Described rectification circuit D1 is a bridge rectifier.Certainly, also can select for use other rectification circuits commonly used to realize.
In the present embodiment, set diode and comprise forward end and backward end, when electric current passes through diode, flow through to backward end from forward end.
In the present embodiment, with respect to prior art, do not adopt IC chip and transformer, adopt the capacitance-resistance mode to come step-down, obtain dc source by rectifying and wave-filtering again after the step-down, this dc source provides little electric current high-voltage LED lamp to drive, and existing do not have high-frequency agitation source for available circuit, thereby do not have high frequency radiation, the required voltage and current parameter of led light source work is adjusted by the capacitance numerical value in the circuit (first capacitor C 1); Preferably, the direct driving LED light source of the output of power supply.
Adopt power factor to promote circuit, can improve the power factor of whole LED lamp drive circuit, effectively satisfying the light source power factor is the High Power Factor occasion.
Claims (10)
1. the power type LED lamp of a high thermal conductivity, comprise joint, led driver, LED substrate, led light source and bulb shield, described led driver is electrically connected with described LED substrate, described led light source is positioned at described bulb shield, it is characterized in that: described power type LED lamp also comprises heat dissipating ring, the upper end of described heat dissipating ring is connected with described joint, the lower end of described heat dissipating ring is connected with described bulb shield, the lower end inwall of described heat dissipating ring is connected with described LED substrate, the end face of described LED substrate connects heat-conducting piece, and described heat-conducting piece is connected with described heat dissipating ring; The bottom surface of described LED substrate a plurality of grooves that are arranged side by side, described groove inwall are provided with in order to reflection led light source light and the reflecting layer that focuses on, and described led light source is positioned at described groove.
2. the power type LED lamp of high thermal conductivity as claimed in claim 1, it is characterized in that: the end face of described heat-conducting piece and described LED substrate is one.
3. the power type LED lamp of high thermal conductivity as claimed in claim 1 or 2, it is characterized in that: described heat-conducting piece is a heat conducting bar, and the bottom of described heat dissipating ring is provided with the heat conduction slot, described heat conducting bar is plugged in the described heat conduction slot.
4. the power type LED lamp of high thermal conductivity as claimed in claim 1 or 2, it is characterized in that: described heat-conducting piece is the heat conduction cover, described heat conduction cover is connected with described heat dissipating ring inwall.
5. the power type LED lamp of high thermal conductivity as claimed in claim 1 or 2, it is characterized in that: described heat-conducting piece is the heat conduction cover, and the bottom of described heat dissipating ring is provided with the heat conduction cannelure, described heat conduction cover is plugged in the described heat conduction cannelure.
6. the power type LED lamp of high thermal conductivity as claimed in claim 1 or 2 is characterized in that: the cross section semicircular in shape of described groove or parabola shaped.
7. the power type LED lamp of high thermal conductivity as claimed in claim 1 or 2, it is characterized in that: be provided with heat-conducting layer between described groove inwall and the reflecting layer, the upper end of described heat-conducting layer is lower than the bottom surface of described LED substrate, and described printed wire is arranged on the bottom surface of described LED substrate.
8. the power type LED lamp of high thermal conductivity as claimed in claim 1 or 2, it is characterized in that: the drive circuit of described led driver comprises first electric capacity, first resistance, rectification circuit, the filter capacitor and second resistance, the civil power incoming end is connected with described first electric capacity, described first resistance and the first electric capacity parallel connection, the other end of described first electric capacity is connected with the input side of described rectification circuit, the two ends of the outlet side of described rectification circuit are connected with filter capacitor, described second resistance is in parallel with described filter capacitor, and the two ends of described filter capacitor are connected with two drive circuit output interfaces.
9. the power type LED lamp of high thermal conductivity as claimed in claim 1 or 2, it is characterized in that: the drive circuit of described led driver comprises first electric capacity, first resistance, rectification circuit, filter capacitor, second resistance and power factor promote circuit, the civil power incoming end is connected with described first electric capacity, described first resistance and the first electric capacity parallel connection, the other end of described first electric capacity is connected with the input side of described rectification circuit, the positive terminal of the outlet side of described rectification circuit is connected with second resistance, one end and filter capacitor are anodal simultaneously, the negative pole end of the outlet side of described rectification circuit connects with the described second resistance other end, described power factor promotes circuit and comprises second diode, the 3rd diode, the 4th diode and auxiliary filter capacitor, the negative pole of described filter capacitor is connected with the backward end of second diode and the forward end of the 3rd diode simultaneously, the forward end of described second diode is connected with the negative pole end of the outlet side of described rectification circuit, the positive terminal of the outlet side of described rectification circuit is connected with the backward end of the 4th diode, the backward end while of described the 3rd diode and the forward end of the 4th diode, the positive pole of auxiliary filter capacitor connects, the negative pole of described auxiliary filter capacitor is connected with the negative pole end of the outlet side of described rectification circuit, and the described second resistance two ends are connected with two drive circuit output interfaces.
10. the power type LED lamp of high thermal conductivity as claimed in claim 8 is characterized in that: an end of described filter capacitor connects current-limiting resistance, and described current-limiting resistance is connected the bridge rectifier of described rectification circuit with a drive circuit output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100561303A CN102095113B (en) | 2011-03-09 | 2011-03-09 | Power type LED (Light Emitting Diode) lamp with high heat conducting property |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100561303A CN102095113B (en) | 2011-03-09 | 2011-03-09 | Power type LED (Light Emitting Diode) lamp with high heat conducting property |
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| CN102095113A true CN102095113A (en) | 2011-06-15 |
| CN102095113B CN102095113B (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100561303A Expired - Fee Related CN102095113B (en) | 2011-03-09 | 2011-03-09 | Power type LED (Light Emitting Diode) lamp with high heat conducting property |
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| CN102506328A (en) * | 2011-11-07 | 2012-06-20 | 虞海盈 | LED (Light-emitting Diode) lamp and drive power supply device thereof |
| CN103929851A (en) * | 2014-03-31 | 2014-07-16 | 深圳市九洲光电科技有限公司 | LED circuit with dimming function and color matching function |
| CN104613423A (en) * | 2015-01-13 | 2015-05-13 | 无锡天地合同能源管理有限公司 | Pluggable tubing lamp |
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| Publication number | Publication date |
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| CN102095113B (en) | 2012-06-20 |
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