CN202403024U - Light-emitting diode (LED) light source with high luminous efficiency and uniform luminescence - Google Patents
Light-emitting diode (LED) light source with high luminous efficiency and uniform luminescence Download PDFInfo
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- CN202403024U CN202403024U CN2011205665431U CN201120566543U CN202403024U CN 202403024 U CN202403024 U CN 202403024U CN 2011205665431 U CN2011205665431 U CN 2011205665431U CN 201120566543 U CN201120566543 U CN 201120566543U CN 202403024 U CN202403024 U CN 202403024U
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- plastic film
- transparent plastic
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Abstract
The utility model discloses a light-emitting diode (LED) light source with high luminous efficiency and uniform luminescence. The LED light source comprises a substrate and an LED chip arranged on the substrate; the upper surface of the substrate is provided with a layer of polyethylene glycol terephthalate (PET) transparent plastic film; a plurality of through holes are formed on the PET transparent plastic film; the side walls of the through holes and the upper surface of the substrate form a cup; the LED chip is arranged in the cup; fluorescent glue is filled in the cup; and an optical lens is arranged on the fluorescent glue. The PET transparent plastic film serves as a light distributing cup of the LED chip, so that a forming process for the cup is simple and the cup can serve as an optical device of the LED chip; when the LED chip emits light, the PET transparent plastic film enhances the spread and diffusion of light, a spot light source phenomenon is eliminated, and the light-emitting uniformity of the LED is high; moreover, the high-transparency film has small light resistance and high refractive index, so the luminous efficiency of the LED is improved; and the total reflection is reduced by the optical lens 7, and the luminous efficiency is improved further.
Description
Technical field
The utility model relates to the LED lighting field, especially relates to a kind of led light source that improves the light extraction efficiency and the luminous uniformity.
Background technology
Under the background that the short worry of global energy raises once again, the energy-conservation energy is the important problem that we shall face future.At lighting field; The application of LED luminous product is just attracting common people's sight, and LED is a kind of solid-state semiconductor devices, and it can directly be converted into light to electric energy; Therefore LED has numerous advantages such as light efficiency height, long service life, energy-saving and environmental protection; More and more widely be applied to various fields, like room lighting, outdoor lighting, backlight, medical treatment, traffic and special lighting etc.And present led light source comprises LED and substrate, and an important performance requirement is arranged in the led light source product, is exactly high to the light extraction efficiency and the requirement of the luminous uniformity of light source; And this problem be present led light source product one of bottleneck; Like 3528 light sources, because cup and bowl wall is opaque, therefore carrying out light through wall of cup reflects the raising luminous efficiency; In repetitious like this process, light extraction efficiency has received certain loss; Like the COB light source, because that chip is arranged is intensive, the luminous easy formation ghost image of close each chip of distance causes the light loss consumption and the luminous uniformity not high.
Summary of the invention
The purpose of the utility model provides a kind of led light source that improves the light extraction efficiency and the luminous uniformity.
For solving the problems of the technologies described above; The utility model technical scheme is: a kind of led light source that improves the light extraction efficiency and the luminous uniformity; Comprise substrate; Said upper surface of base plate posts the PET transparent plastic film, has through hole on the said PET transparent plastic film, and the sidewall of through hole and upper surface of base plate form the bowl cup; In the bowl cup led chip is installed, is filled with fluorescent glue in the bowl cup, fluorescent glue is provided with the LED optical lens.
As improvement, the sidewall of through hole and upper surface of base plate form the bowl cup, make the moulding process of bowl cup become simple; And this bowl cup can be used as the optics of led chip, and when led chip was luminous, the PET transparent plastic film had strengthened the propagation and the diffusion of light; Realized approximate area source phenomenon, make that the outgoing light homogeneity of LED is high, and the light transmittance of PET transparent plastic film has been high; Therefore, also improved the light extraction efficiency of LED.
As improvement, be filled with fluorescent glue in the said bowl cup.Coating one deck fluorescent glue is compared with traditional approach in the through hole of PET transparent plastic film, has reduced the consumption of fluorescent glue, has reduced cost; Simultaneously, make that also the coating of fluorescent glue is more even, improved light extraction efficiency.
As improvement, the top of said fluorescent glue is concordant with said PET transparent plastic film height.
As improvement, the length of PET transparent plastic film and width are less than the length and the width of substrate.
As improvement, at the through hole that is provided with on the PET transparent plastic film more than two rows, adjacent two rows' through hole is staggered.The light that LED is sent through staggered through hole of arranging carries out complementation, thereby the dark space of having eliminated traditional symmetry arrangement structure light source produces, and alleviates the phenomenon of edge high light dazzle, makes that the bright dipping of LED is more even.
As improvement, the thickness of said PET transparent plastic film is 0.1 ~ 1.0mm.
As improvement, said PET transparent plastic film is through being pasted and fixed on said upper surface of base plate, and manufacturing process is more simple and convenient.
As improvement, said fluorescent glue is provided with optical lens, reduces total reflection through optical lens, has further improved luminous efficiency.
The beneficial effect that the utility model is compared with prior art brought is:
When led chip was luminous, the PET transparent plastic film had strengthened the propagation and the diffusion of light, had realized approximate area source phenomenon, make that the outgoing light homogeneity of LED is high, and PET transparent plastic film light transmittance was high, therefore, has also improved the light extraction efficiency of LED; Can make the light that sends carry out complementation through staggered through hole of arranging, thereby the dark space of having eliminated traditional symmetry arrangement structure light source produce, and alleviates the phenomenon of edge high light dazzle, makes that the bright dipping of LED is more even; Only in the through hole of PET transparent plastic film, be coated with fluorescent glue, can significantly reduce the consumption of fluorescent material and glue, obviously reduced cost, simultaneously, make that also the coating of fluorescent glue is more even, improved light extraction efficiency; Optical lens is housed on the fluorescent glue, reduces total reflection, further improved luminous efficiency through optical lens.
Description of drawings
Fig. 1 is the vertical view of the utility model.
Fig. 2 is the cutaway view of the utility model.
Fig. 3 is the structure chart of PET transparent plastic film.
Fig. 4 is the A place enlarged drawing of Fig. 3.
The specific embodiment
Below in conjunction with Figure of description the utility model is described further.
Like Fig. 1, shown in 2, a kind of led light source that improves the light extraction efficiency and the luminous uniformity comprises substrate 1, PET transparent plastic film 2, led chip 3, gold thread 4, fluorescent glue 5, optical lens 7.Has copper foil layer 6 on the substrate 1.In the present embodiment, the thickness of said PET transparent plastic film 2 is 0.1 ~ 1.0mm, and PET transparent plastic film 2 sticks on the substrate 1, and said PET transparent plastic film 2 is provided with two exhausting holes 21, and like Fig. 3, shown in 4, the through hole of adjacent rows is staggered; Described through hole 21 sidewalls and substrate 1 upper surface form the bowl cup, and led chip 3 is directly solid brilliant on the substrate 1 that is positioned at the bowl cup, and gold thread 4 is realized being electrically connected of led chip 3 and copper foil layer 6; In the bowl cup, fill fluorescent glue 5, the height of fluorescent glue 5 is concordant with the height of PET transparent plastic film 2.Said fluorescent glue 5 is provided with optical lens 7, reduces total reflection through optical lens 7, has further improved luminous efficiency.In this structure, led chip 3 is not exposed outside with gold thread 4, has protected the structure of led chip 3 and gold thread 4, and the length of PET transparent plastic film 2 and width are narrower than substrate 1, and the copper foil layer 6 around the substrate 1 directly with the air contact, has improved radiating effect.
The utility model led light source posts PET transparent plastic film 2 at substrate surface, and PET transparent plastic film 2 has strengthened the propagation and the diffusion of light, has eliminated the spot light phenomenon, makes that the outgoing light homogeneity of LED is high; Because PET plastic sheeting light transmittance is high, therefore, has also improved the light extraction efficiency of LED.On PET transparent plastic film 2, have the through hole 21 of multi-row staggered arrangement; Led chip 3 directly is fixed on the substrate 1 of through hole 21 correspondences; Like this, can make the light that sends carry out complementation, thereby the dark space of having eliminated traditional symmetry arrangement structure light source produce through staggered through hole 21 of arranging; Alleviate the phenomenon of edge high light dazzle, make that the bright dipping of LED is more even.In addition, only in the through hole 21 of PET transparent plastic film 2, be coated with fluorescent glue 5, can significantly reduce the consumption of fluorescent material and glue, obviously reduced cost, simultaneously, make that also the coating of fluorescent glue is more even, improved light extraction efficiency.The utility model led light source is established optical lens 7 on fluorescent glue 5, reduce total reflection through optical lens 7, further improves light extraction efficiency.
Claims (5)
1. led light source that improves the light extraction efficiency and the luminous uniformity; Comprise substrate and be located at the led chip on the said substrate, it is characterized in that: said upper surface of base plate is provided with one deck PET transparent plastic film, and said PET transparent plastic film is provided with some through holes; The sidewall of said through hole and upper surface of base plate form the bowl cup; Said led chip is located in the said bowl cup, is filled with fluorescent glue in the said bowl cup, and said fluorescent glue is provided with optical lens.
2. a kind of led light source that improves the light extraction efficiency and the luminous uniformity according to claim 1 is characterized in that: the top of said fluorescent glue is concordant with said PET transparent plastic film height.
3. a kind of led light source that improves the light extraction efficiency and the luminous uniformity according to claim 1 is characterized in that: the length of PET transparent plastic film and width are less than the length and the width of substrate.
A kind of led light source that improves the light extraction efficiency and the luminous uniformity according to claim 1 is characterized in that: at the through hole that is provided with on the PET transparent plastic film more than two rows, adjacent two rows' through hole is staggered.
4. a kind of led light source that improves the light extraction efficiency and the luminous uniformity according to claim 1 is characterized in that: the thickness of said PET transparent plastic film is 0.1 ~ 1.0mm.
5. a kind of led light source that improves the light extraction efficiency and the luminous uniformity according to claim 1 is characterized in that: said PET transparent plastic film is through being pasted and fixed on said upper surface of base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205665431U CN202403024U (en) | 2011-12-30 | 2011-12-30 | Light-emitting diode (LED) light source with high luminous efficiency and uniform luminescence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205665431U CN202403024U (en) | 2011-12-30 | 2011-12-30 | Light-emitting diode (LED) light source with high luminous efficiency and uniform luminescence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202403024U true CN202403024U (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205665431U Expired - Fee Related CN202403024U (en) | 2011-12-30 | 2011-12-30 | Light-emitting diode (LED) light source with high luminous efficiency and uniform luminescence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202403024U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151909A (en) * | 2016-06-29 | 2016-11-23 | 海宁市智慧光电有限公司 | A kind of low thermal resistance high-efficient large power LED lamp bead |
-
2011
- 2011-12-30 CN CN2011205665431U patent/CN202403024U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151909A (en) * | 2016-06-29 | 2016-11-23 | 海宁市智慧光电有限公司 | A kind of low thermal resistance high-efficient large power LED lamp bead |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 510890 Huadu District, Guangdong, Guangzhou Flower Town, SAST Road, No. 1, No. 1 Patentee after: Hongli Newell group Limited by Share Ltd Address before: 510800 Dongfeng Road West, automobile city, Huadu District, Guangdong, Guangzhou Patentee before: Guangzhou Hongli Tronic Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20171230 |