CN102777791B - Light fixture and full optic angle LED bulb thereof - Google Patents
Light fixture and full optic angle LED bulb thereof Download PDFInfo
- Publication number
- CN102777791B CN102777791B CN201210241258.1A CN201210241258A CN102777791B CN 102777791 B CN102777791 B CN 102777791B CN 201210241258 A CN201210241258 A CN 201210241258A CN 102777791 B CN102777791 B CN 102777791B
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- Prior art keywords
- led
- heat sink
- optic angle
- radiator
- full optic
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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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The invention discloses a kind of light fixture and full optic angle LED bulb thereof, this full optic angle LED bulb comprise cell-shell and the LED that is placed in cell-shell heat sink, LED group and radiator, described LED is heat sink to be in the position near cell-shell top and to be wholely set with radiator or to be fixed on radiator end, described LED group is fixed on LED heat sink surface, described LED group comprises forward lamp group and side direction lamp group, described forward lamp is mounted on the heat sink end face of described LED, described side direction lamp is mounted on the heat sink side of described LED, described LED is heat sink, and side becomes the angle of 30 ° ~ 60 ° with horizontal plane.Be provided with forward lamp group due to full optic angle LED bulb of the present invention and become the side direction lamp group of 30 ° ~ 60 ° of angles with horizontal plane, the forward of bulb and side direction is made to have uniform light source, thus on the basis of the traditional profile keeping LED bulb elegant in appearance, achieve the full optic angle uniform light distribution of LED bulb with lower cost.
Description
Technical field
The present invention relates to solid state illumination technology field, especially relate to a kind of light fixture and full optic angle LED bulb thereof.
Background technology
Based on the fast development of LED technology, the quick reduction of cost, the LED illumination product integrating the advantages such as energy-saving and environmental protection, health, safety progressively substitutes traditional illuminating product.Because LED is unidirection luminous, it has powerful advantage for alternative unidirection luminous light source and light fixture.But, substitute with LED and need oversized angle even the light source series products of full angle luminous intensity distribution, as category-A, G class incandescent lamp bulb etc., just need special design just can meet the demands.
In existing design, by arranging several LED light-emitting area in light source side perpendicular to horizontal plane, make it luminous toward both sides, to realize oversized angle luminescence.But this design can make the Luminescence Uniformity of whole bulb not enough, therefore needs the diffusion cell-shell being equipped with given shape again.Although the uniform light distribution of full angle so can be realized.But its production process is more, and production cost is higher, and its appearance profile departs from traditional design, causes profile attractive in appearance not.
Summary of the invention
Main purpose of the present invention is to provide a kind of light fixture and full optic angle LED bulb thereof, on the basis of the traditional profile keeping bulb elegant in appearance, realizes the full optic angle uniform light distribution of bulb with lower cost.
For realizing above object, the present invention proposes a kind of full optic angle LED bulb, comprise cell-shell and be placed in that LED in cell-shell is heat sink, LED group and radiator, described LED is heat sink to be in the position near cell-shell top and to be wholely set with radiator or to be fixed on radiator end, described LED group is fixed on LED heat sink surface, described LED group comprises forward lamp group and side direction lamp group, described forward lamp is mounted on the heat sink end face of described LED, described side direction lamp is mounted on the heat sink side of described LED, described LED is heat sink side becomes with the horizontal plane angle of 30 ° ~ 60 °.
Preferably, described angle is 45 °.
Preferably, symmetry that described LED is heat sink be provided with 4 sides, the LED quantity of the side direction lamp group on each side is equal with the LED quantity of forward lamp group.
Preferably, described radiator is provided with some grooves.
Preferably, described groove longitudinally runs through along described radiator, and described radiator segmentation is formed some heat radiation lobes by some grooves.
Preferably, described heat radiation lobe is provided with through hole.
Preferably, described through hole longitudinally runs through along described heat radiation lobe.
Preferably, the side number that the number of described groove is heat sink with described LED is equal.
The present invention proposes a kind of light fixture simultaneously, and this light fixture comprises a full optic angle LED bulb, and described full optic angle LED bulb is the full optic angle LED bulb described in above any one.
A kind of light fixture provided by the present invention and full optic angle LED bulb thereof, owing to being provided with forward lamp group and becoming the side direction lamp group of 30 ° ~ 60 ° of angles with horizontal plane in this full optic angle LED bulb, the forward of bulb and side direction is made to have uniform light source, thus on the basis of the traditional profile keeping LED bulb elegant in appearance, achieve the full optic angle uniform light distribution of LED bulb with lower cost.Meanwhile, owing to being provided with groove, heat radiation lobe and through hole on the radiator of full optic angle LED bulb, its radiating efficiency is greatly improved.
Accompanying drawing explanation
Fig. 1 is the partial sectional view of full optic angle LED bulb one embodiment of the present invention;
Fig. 2 is the distribution curve flux analog result schematic diagram of full optic angle LED bulb one embodiment of the present invention;
Fig. 3 is the structural representation of radiator one embodiment of full optic angle LED bulb of the present invention;
Fig. 4 is another structural representation of radiator one embodiment of full optic angle LED bulb of the present invention;
Fig. 5 is the structural representation of full optic angle LED bulb one preferred embodiment of the present invention;
Fig. 6 is the radiating effect analog result schematic diagram of full optic angle LED bulb one preferred embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
See Fig. 1, full optic angle LED bulb one embodiment of the present invention is proposed.Fig. 1 is the partial sectional view of full optic angle LED bulb one embodiment of the present invention.The full optic angle LED bulb of the present embodiment, comprise cell-shell 100 and be placed in that LED in cell-shell 100 is heat sink 200, LED group and radiator 300, described LED is heat sink 200 be near cell-shell 100 top position and be wholely set with radiator 300 or be fixed on radiator 300 end, the present embodiment preferably heat sink 200 is wholely set with radiator 300, and to make, its heat conduction efficiency is higher, radiating rate is faster.Described LED group is fixed on heat sink 200 surfaces of LED, LED group comprises forward lamp group 210 and side direction lamp group 220, described forward lamp group 210 is located at heat sink 200 end faces of described LED, described side direction lamp group 220 is located at heat sink 200 sides of described LED, described LED is heat sink 200 sides become with the horizontal plane angle of 30 ° ~ 60 °.Lighting angle due to LED is 120 °, and forward lamp group 210 mainly carries out luminous intensity distribution in the c-γ coordinate system of light distribution on γ 0 ° ~ 60 ° directions, and the luminous intensity distribution on γ 60 ° ~ 180 ° directions is then realized by the light source of side direction lamp group 220.In the ideal situation, the light-emitting area (being also the side of LED heat sink 200) of side direction lamp group 220 should be 60 ° with the angle theta of horizontal plane.But, owing to being covered with the cell-shell 100 with diffusion outside bulb, its shape major part deflection γ 90 °, so it will change the original light emission direction of LED, make it to shift to γ 90 ° of directions from γ 120 ° of directions, finally cause the Luminescence Uniformity of whole bulb not enough.And if θ is too small, then light direction will be partial to γ 180 °, more light is mapped to and be positioned on the working of plastics of lamp holder, thus reduce light efficiency.Therefore θ should select from 30 ° ~ 60 °.Find through practice, optimum angle theta should be 45 °.Therefore, the present embodiment, on the basis of the traditional profile keeping LED bulb elegant in appearance, achieves the full optic angle uniform light distribution of LED bulb with lower cost.
Further, in order to improve within the scope of full optic angle the luminous uniformity further, 200 symmetries that the LED in above-described embodiment is heat sink be provided with 4 sides, the LED quantity of the side direction lamp group 220 on each side is equal with the LED quantity of forward lamp group 210.In current professional standard, full optic angle bulb is required that the strictest is the characteristics of luminescence requirement of Energy Star (Energy Star, hereinafter referred to as ES) for category-A bulb (i.e. the bulb of standard incandescent lamp shape).It requires that the change of the light intensity in γ 0 °-135 ° luminous flux that can not exceed in 20%, γ 135 ° ~ 180 ° of average intensity within the scope of this can not lower than 5% of total light flux.In order to improve within the scope of full optic angle the luminous uniformity further, the solid angle ratio just needing to make the luminous ratio of all directions and this direction corresponding is identical.Omnidirectional solid angle is 4 π, and solid angle Ω=2 π (1-cos γ)=2 π (1-cos60 °)=π of forward lamp group 210 light emission direction γ 0 ° ~ 60 ° of in-scopes, the luminous flux of therefore its bright dipping is 1:3 with the ratio of the luminous flux of side direction lamp group 220 bright dipping.But because the structure in lamp holder direction limits, side direction lamp group 220 can not contribute at the light of γ 180 ° ~ 225 ° of scopes, and therefore the luminous flux of side direction lamp group 220 is required to be 3 times of the luminous flux of forward lamp group 210.
LED is roughly Lambertian source, and therefore the light distribution of forward LED group 210 is I
γ=I
γ=0 °cos γ.Consider the endless belt luminous flux of two dimension with the cross section crossing axis, can be expressed as
for the side direction LED group 220 that angle theta is 45 °, its light intensity is then I '
γ=I '
γ=135 °cos (γ-135 °), the luminous flux in cross section
and after considering structure restriction, its effective luminous flux is
therefore, according to the light flux ratio of the forward provided above and side direction bright dipping, Ying You
therefore I is had
γ=0 °: I '
γ=135 °≈ 1:3.5.So when side direction lamp group 220 is identical with the LED that forward lamp group 210 uses, then in all side direction LED groups 220, the quantity of LED should be 3.5 times of LED quantity in forward lamp group 210.
In order to the facility that power supply exports and connects between LED, side direction lamp group 220 should have N group, namely LED heat sink 200 should have N number of symmetrically arranged side, and the LED quantity of side direction lamp group 220 on the heat sink 200 each sides of LED should be equal with the LED quantity of forward lamp group 210.According to result above, N should be 3 or 4, but owing to considering the impact of cell-shell, need select larger value, therefore preferential side is 4 groups to lamp group, and namely LED heat sink 200 has 4 sides.On cover after cell-shell, simulate the distribution curve flux of whole lamp, its analog result as shown in Figure 2.From analog result, in γ 0 ° ~ 135 °, the distribution of light intensity is very even, and light intensity change only has an appointment ± and 10 °.Therefore, the present embodiment meets the uniformity requirements of ES completely, achieves the uniformly light-emitting within the scope of the full optic angle of LED bulb.
See Fig. 3, Fig. 4, radiator 300 1 embodiment of full optic angle LED bulb of the present invention is proposed.Wherein, Fig. 3 is the structural representation of radiator one embodiment of full optic angle LED bulb of the present invention; Fig. 4 is another structural representation of radiator one embodiment of full optic angle LED bulb of the present invention.The radiator 300 of the full optic angle LED bulb of the present embodiment is provided with some grooves 310.The object arranging groove 310 is to expand area of dissipation, and heat-dissipating space, often arranges a groove 310, just adds the sidewall that groove 310 is formed with radiator 300, also namely adds radiating surface, and groove also provides heat radiation space simultaneously.Groove arbitrarily can be arranged at any position of heat radiation lobe, also can be any shape, as long as can expand area of dissipation and heat-dissipating space.In order to make area of dissipation and heat-dissipating space reach maximum, the groove 310 of the present embodiment preferably longitudinally runs through along described radiator 300, runs through rear some grooves 310 and just described radiator 300 segmentation is defined some heat radiation lobes 320.Because each heat radiation lobe 320 the right and left respectively has a groove 310, therefore each heat radiation lobe 320 also just adds two larger radiating surfaces, improves radiating efficiency.The number of groove 310 is equal with the side number of LED heat sink 200.LED due to the present embodiment is heat sink 200 preferred 4 sides, therefore equally preferred 4 grooves 310, the corresponding groove 310 in each side, the heat enabling it produce is spread by rapid radiation.
Further, described heat radiation lobe 320 is provided with through hole 321.This through hole 321 is conducive to the circulation of air, strengthens heat loss through convection.Consider that bulb in actual applications, normally vertically places, therefore the preferred through hole 321 longitudinally run through along described heat radiation lobe.
See the structural representation that Fig. 5, Fig. 5 are full optic angle LED bulb one preferred embodiments of the present invention.Full optic angle LED bulb in the present embodiment, after its radiator 300 is provided with groove 310, heat radiation lobe 320 and through hole 321, its radiating efficiency is greatly improved.Be the radiating effect of the full optic angle LED bulb of the present embodiment of 10W by software simulation light source general power, obtain analog result as shown in Figure 6.This result shows, and the full optic angle LED bulb of the present embodiment, the temperature of its LED light emitting source is the highest also only has 84.5 DEG C, and general LED junction temperature can bear 125 DEG C.Therefore, the radiator 300 of the full optic angle LED bulb of the present embodiment has good heat-sinking capability, enough supports powerful design.
The present invention proposes a kind of light fixture simultaneously, this light fixture comprises a full optic angle LED bulb, described full optic angle LED bulb comprise cell-shell and the LED that is placed in cell-shell heat sink, LED group and radiator, described LED is heat sink to be in the position near cell-shell top and to be wholely set with radiator or to be fixed on radiator end, described LED group is fixed on LED heat sink surface, it is characterized in that, described LED group comprises forward lamp group and side direction lamp group, described forward lamp is mounted on the heat sink end face of described LED, described side direction lamp is mounted on the heat sink side of described LED, described LED is heat sink, and side becomes the angle of 30 ° ~ 60 ° with horizontal plane.Full optic angle LED bulb described in the present embodiment is the full optic angle LED bulb in the present invention involved by above-described embodiment, does not repeat them here.
Should be understood that; these are only the preferred embodiments of the present invention; can not therefore limit the scope of the claims of the present invention; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a full optic angle LED bulb, comprise cell-shell and be placed in that LED in cell-shell is heat sink, LED group and radiator, described LED is heat sink to be in the position near cell-shell top and to be wholely set with radiator or to be fixed on radiator end, described LED group is fixed on LED heat sink surface, it is characterized in that, described LED group comprises forward lamp group and side direction lamp group, described forward lamp is mounted on the heat sink end face of described LED, described side direction lamp is mounted on the heat sink side of described LED, described LED is heat sink side becomes with the horizontal plane angle of 30 ° ~ 60 °; Symmetry that described LED is heat sink be provided with 4 sides, the LED quantity of the side direction lamp group on each side is equal with the LED quantity of forward lamp group, and the luminous flux of described side direction lamp group is 3 times of the luminous flux of described forward lamp group.
2. full optic angle LED bulb according to claim 1, is characterized in that, the angle of described LED is heat sink side and horizontal plane is 45 °.
3. full optic angle LED bulb according to claim 1, it is characterized in that, described radiator is provided with some grooves, and described groove longitudinally runs through along described radiator, and described radiator segmentation is formed some heat radiation lobes by some grooves; Described heat radiation lobe is provided with through hole, and described through hole longitudinally runs through along described heat radiation lobe.
4. full optic angle LED bulb according to claim 3, is characterized in that, the side number that the number of described groove is heat sink with described LED is equal.
5. a light fixture, comprises a full optic angle LED bulb, it is characterized in that, described full optic angle LED bulb is the full optic angle LED bulb as described in any one of Claims 1-4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210241258.1A CN102777791B (en) | 2012-07-12 | 2012-07-12 | Light fixture and full optic angle LED bulb thereof |
| PCT/CN2012/085555 WO2014008734A1 (en) | 2012-07-12 | 2012-11-29 | Light and 360° led light bulb therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210241258.1A CN102777791B (en) | 2012-07-12 | 2012-07-12 | Light fixture and full optic angle LED bulb thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102777791A CN102777791A (en) | 2012-11-14 |
| CN102777791B true CN102777791B (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210241258.1A Expired - Fee Related CN102777791B (en) | 2012-07-12 | 2012-07-12 | Light fixture and full optic angle LED bulb thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102777791B (en) |
| WO (1) | WO2014008734A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777791B (en) * | 2012-07-12 | 2015-09-09 | 深圳和而泰照明科技有限公司 | Light fixture and full optic angle LED bulb thereof |
| TW201500687A (en) * | 2013-06-24 | 2015-01-01 | Beautiful Light Technology Corp | Light emitting diode bulb |
| CN105526505A (en) * | 2016-01-29 | 2016-04-27 | 深圳和而泰照明科技有限公司 | Illuminating lamp with bulb shell capable of being directly shot and penetrated by light |
| CN107940261A (en) * | 2016-10-11 | 2018-04-20 | 王定锋 | The all-round smooth LED bulb and production method of a kind of simple structure |
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Also Published As
| Publication number | Publication date |
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| CN102777791A (en) | 2012-11-14 |
| WO2014008734A1 (en) | 2014-01-16 |
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Effective date of registration: 20170613 Address after: 518100 Guangdong province Shenzhen Guangming New District Gongming Street mold base root Yu Lu Industrial Park Building 4 layer heertai Patentee after: Shenzhen heertai Intelligent Lighting Co., Ltd. Address before: 518057 D building, Shenzhen Institute of Aerospace Science and technology, No. 6 South ten road, Shenzhen, Guangdong, Nanshan District 201, China Patentee before: Shenzhen H & T Intelligent Control Co., Ltd. |
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