CN103453348B - Light-emitting device - Google Patents
Light-emitting device Download PDFInfo
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- CN103453348B CN103453348B CN201210182707.XA CN201210182707A CN103453348B CN 103453348 B CN103453348 B CN 103453348B CN 201210182707 A CN201210182707 A CN 201210182707A CN 103453348 B CN103453348 B CN 103453348B
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- light
- emitting device
- cambered surface
- luminescence unit
- pedestal
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Abstract
The present invention discloses a kind of light-emitting device, and it is included：One pedestal, there is a upper surface；Multiple luminescence units are circumferentially formed on pedestal upper surface；Multiple light elements are correspondingly formed on each luminescence unit respectively, wherein each light element has one first cambered surface and one second cambered surface, the light of luminescence unit is extracted.
Description
Technical field
The present invention relates to a kind of light-emitting device with uniform light field.
Background technology
Light emitting diode is a kind of light source being widely used in semiconductor element.Be compared to traditional incandescent lamp bulb or
Fluorescent tube, light emitting diode have power saving and a longer characteristic of service life, thus gradually substitution conventional light source and be applied to
Various fields, such as traffic sign, backlight module, street lighting, Medical Devices industry.
In recent years, with the increase that light emitting diode is applied, the method one of various increase light emitting diode light extraction efficiency
One is suggested.One of light extraction efficiency problem encountered to be promoted, it is uneven to transmit CURRENT DISTRIBUTION between light-emitting diodes pipe electrode
It is even, too high (current crowding) problem of current density in caused regional area.Because CURRENT DISTRIBUTION is uneven between two electrodes,
So that operation electric current increases and causes the current density of specific region too high, make the overall luminous efficacy of light emitting diode reduce.
The too high situation of the specific region current density causes the light extraction of light emitting diode that the phenomenon concentrated is presented, even if
Surface coarsening is done on a light emitting diode or is improved plus catoptric arrangement etc., is also only capable of lifting a certain degree of light extraction efficiency, and
When light emitting diode is attached to package substrate and then is applied to light fixture, then uniform light can be made by needing to be formed in the structure of light fixture
The lens of distribution.
The content of the invention
To solve the above problems, the present invention provides a kind of light-emitting device, it is included：One pedestal, there is a upper surface；It is multiple
Luminescence unit is formed at pedestal upper surface and is arranged in an annular patterns；Multiple light elements be respectively formed in each luminescence unit it
On, wherein each light element has one first cambered surface and one second cambered surface, light is extracted.
Brief description of the drawings
Figure 1A is the side cutaway view of a specific embodiment of light-emitting device of the present invention；
Figure 1B is the upper pseudosection of light-emitting device of the present invention；
Fig. 1 C are the light element schematic diagrames of light-emitting device of the present invention；
Fig. 1 D are the luminescence unit schematic diagrams of light-emitting device of the present invention.
Main element symbol description
100 light-emitting devices
102 pedestals
102a upper surfaces
102b first row hot holes
104 luminescence units
106 light elements
The cambered surfaces of 106a first
The cambered surfaces of 106b second
106c is open
108 openings
110 column heat-sink units
The heat extraction holes of 110a the 3rd
112 circuit boards
112a second row hot holes
112b installs mouth
114 package substrates
118 blue light-emitting diode tube cores
120 red light-emitting diode tube cores
122 packing colloids
124 wavelength conversion units
C is around center
Embodiment
As illustrated in figures 1A and ib, its be light-emitting device of the present invention a specific embodiment.Light-emitting device 100 may be, for example,
One bulb device, including a pedestal 102 have the upper surface 102a that a upper surface 102a, a circuit board 112 are formed at pedestal 102
Go up, multiple luminescence units 104 are formed on circuit board 112 and are arranged in an annular patterns and multiple light elements 106 are distinguished
It is formed on multiple luminescence units 104.Luminescence unit 104 may be, for example, a LED packaging element, and light element 106
The second cambered surface 106b of light penetration can be made to the first cambered surface 106a of reflection light and one including one.Multiple light elements
106 side can adjoin one another or staggeredly surround into an accommodation space, and top is then arranged in an opening 108.Each light element
106 be to surround arrangement around center C according to one, and the first cambered surface 106a is close compared with the second cambered surface 106b around center.
The inside of pedestal 102 can have a driver element (not shown) to be supplied the AC conversion of outside is direct current
To circuit board 112.The rough middle positions of upper surface 102a of pedestal 102 can separately have a post for being located substantially at the lower section of opening 108
Shape heat-sink unit 110, as shown in Figure 1B, the outline middle position of circuit board 112 can have corresponding receiving column heat-sink unit 110
Installing mouth 112b, column heat-sink unit 110 can be integrally formed at the upper surface 102a of pedestal 102.Pedestal 102 can have insertion
Upper surface 102a multiple first row hot hole 102b, and circuit board 112 can have correspond to multiple first row hot hole 102b's respectively
Multiple second row hot hole 112a, column heat-sink unit 110 also have the 3rd longitudinally through heat extraction hole 110a.Inside pedestal 102
Driver element caused by heat can be by first row hot hole 102b, second row hot hole 112a and the 3rd heat extraction hole 110a toward opening
Mouth 108 is flowed and discharged outside light-emitting device 100, and heat can also be dissipated by circuit board 112 and column caused by luminescence unit 104
Hot cell 110 is discharged outside light-emitting device 100.
As shown in Figure 1 C, light element 106 can be a ducted body, and there is an opening 106c to accommodate luminescence unit for bottom
A high reflection face can be formed on 104, the first cambered surface 106a by being coated with the modes such as reflecting material, grinding or plated film.High reflection face
The internal or external of light element 106 can be formed at.First cambered surface 106a area is small compared with the second cambered surface 106b, luminescence unit
104 light can be directly by the second cambered surface 106b light extractions, or are gone out by the first cambered surface 106a primary events to the second cambered surface 106b
Light, or can between the first cambered surface 106a, the second cambered surface 106b roundtrip and by the second cambered surface 106b light extractions.Luminescence unit 104
Caused light can be with various angles by the second cambered surface 106b light extractions so that light-emitting device 100 produces the optical field distribution of wide area.
The hollow body structure of light element 106 in the present embodiment by way of example only, light element 106 or one transparent solid
Body.
As shown in figure iD, luminescence unit 104 may include a package substrate 114, one or more blue light-emitting diode tube cores
118th, one or more red light-emitting diode tube cores 120, be covered in blue light-emitting diode tube core 118 and red light-emitting diode
A packing colloid 122 on tube core 120 and one layer of wavelength conversion unit 124 being formed on the surface of packing colloid 122.It is logical
Crossing the mixed light of blue light-emitting diode tube core 118, red light-emitting diode tube core 120 and wavelength conversion unit 124 can produce
To the white light illuminated.
Although with reference to above example it is stated that the present invention, the scope that so it is not intended to limiting the invention, implement it is suitable
Sequence or the material and process for making used.For the various modifications that the present invention is made and change, all do not depart from the present invention's
Spirit and scope.
Claims (18)
1. a kind of light-emitting device, comprising：
Pedestal, there is upper surface；
Multiple luminescence units, it is formed at the pedestal upper surface and is arranged in an annular patterns；
Multiple light elements, it is respectively formed on the plurality of luminescence unit, the side of the plurality of light element is interlaced with each other, its
In each the plurality of light element there is the first cambered surface and the second cambered surface, light is extracted, and the thickness of each the plurality of light element
Degree is tapered from the side that the luminescence unit is laterally away from close to the one of the luminescence unit；And
One column heat-sink unit, is formed on the middle position of the pedestal.
2. the light of the corresponding luminescence unit of light-emitting device as claimed in claim 1, wherein first cambered surface reflection, should
Second cambered surface receives the light from first cambered surface, and the light is extracted in the light element.
3. the top of light-emitting device as claimed in claim 1, wherein those light elements is arranged in an opening, and the column dissipates
Hot cell is located at below the opening.
4. light-emitting device as claimed in claim 3, in addition to circuit board, being formed on the pedestal, wherein the circuit board has
A pair should column heat-sink unit installing mouth.
5. light-emitting device as claimed in claim 4, the wherein pedestal have multiple first row hot holes, and the circuit board is with more
It is individual to should first row hot hole second row hot hole.
6. light-emitting device as claimed in claim 1, the wherein area of first cambered surface are less than second cambered surface.
7. light-emitting device as claimed in claim 1, wherein each the plurality of luminescence unit includes：Package substrate, at least a feux rouges
LED core；An at least blue light-emitting diode tube core；Packing colloid, cover the red light-emitting diode tube core and be somebody's turn to do
Blue light-emitting diode tube core；And wavelength conversion unit, formed on the surface of the packing colloid.
8. light-emitting device as claimed in claim 1, wherein the bottom of each the plurality of light element has the ducted body of opening, and
The luminescence unit is covered by the opening.
9. light-emitting device as claimed in claim 8, wherein it is coated with a reflecting material in first cambered surface.
10. light-emitting device as claimed in claim 1, wherein the plurality of luminescence unit arranges according to one around center, respectively should
First cambered surface of multiple light elements is compared with second cambered surface close to the circular center.
11. a kind of light-emitting device, comprising：
Pedestal, there is a upper surface and a center；
Multiple luminescence units, it is formed at the pedestal upper surface and around the center；And
Multiple light elements, it is respectively formed on the plurality of luminescence unit, wherein each the plurality of light element has one first
Cambered surface and one second cambered surface, by the extraction of the uniform light of each the plurality of luminescence unit in corresponding each the plurality of guide-lighting list
Member, the thickness of each the plurality of light element are laterally away from each the plurality of luminescence unit close to the one of each the plurality of luminescence unit certainly
Side is tapered, and the thickness of each the plurality of light element is tapered toward both ends in center in a horizontal cross-section.
12. light-emitting device as claimed in claim 11, formed with a reflecting material wherein in first cambered surface, respectively should with reflecting
The light of multiple luminescence units, second cambered surface receive the light from first cambered surface, and by the light from second arc
Face is extracted in each the plurality of light element.
13. light-emitting device as claimed in claim 11, wherein first cambered surface of each the plurality of light element is compared with second arc
Face is close to the center.
14. light-emitting device as claimed in claim 11, wherein the plurality of luminescence unit is close to the edge of the pedestal upper surface.
15. light-emitting device as claimed in claim 13, the wherein recess of first cambered surface are towards the center, and first cambered surface
Curvature be more than second cambered surface.
16. light-emitting device as claimed in claim 11, in addition to a column heat-sink unit are surround by the plurality of light element.
17. light-emitting device as claimed in claim 11, wherein each the plurality of luminescence unit includes package substrate, red light-emitting two
Pole pipe tube core and blue light-emitting diode tube core on the package substrate, packing colloid cover the red light-emitting diode tube core and
The blue light-emitting diode tube core and wavelength conversion unit are formed on the surface of the packing colloid.
18. light-emitting device as claimed in claim 11, the top arrangement form one of the plurality of light element is open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182707.XA CN103453348B (en) | 2012-06-05 | 2012-06-05 | Light-emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182707.XA CN103453348B (en) | 2012-06-05 | 2012-06-05 | Light-emitting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103453348A CN103453348A (en) | 2013-12-18 |
| CN103453348B true CN103453348B (en) | 2018-02-23 |
Family
ID=49736024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210182707.XA Active CN103453348B (en) | 2012-06-05 | 2012-06-05 | Light-emitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103453348B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210624452U (en) * | 2019-09-29 | 2020-05-26 | 漳州立达信光电子科技有限公司 | LED lamp and control circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007194132A (en) * | 2006-01-20 | 2007-08-02 | Fujifilm Holdings Corp | Lighting device |
| JP4989170B2 (en) * | 2006-09-20 | 2012-08-01 | オスラム・メルコ株式会社 | Compact LED lamp |
| CN102261570A (en) * | 2010-05-26 | 2011-11-30 | 苏州久腾光电科技有限公司 | LED (light emitting diode) bulb |
| CN102478179A (en) * | 2010-11-24 | 2012-05-30 | 海洋王照明科技股份有限公司 | Light emitting diode (LED) ring-shaped light source |
| CN201992379U (en) * | 2010-12-10 | 2011-09-28 | 林学进 | Lighting device |
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2012
- 2012-06-05 CN CN201210182707.XA patent/CN103453348B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103453348A (en) | 2013-12-18 |
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