CN102900964A - Light emitting diode light source device - Google Patents
Light emitting diode light source device Download PDFInfo
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- CN102900964A CN102900964A CN2011102121191A CN201110212119A CN102900964A CN 102900964 A CN102900964 A CN 102900964A CN 2011102121191 A CN2011102121191 A CN 2011102121191A CN 201110212119 A CN201110212119 A CN 201110212119A CN 102900964 A CN102900964 A CN 102900964A
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- light emitting
- source device
- light source
- emitting diode
- led light
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Abstract
A light emitting diode light source device comprises a light emitting portion, a fluorescent plate and a PWM (pulse width modulation) adjusting device, wherein the light emitting portion comprises a substrate and a plurality of light emitting diodes arranged on the substrate, and the fluorescent plate shields emergent light paths of the light emitting diodes. The fluorescent plate internally comprises a plurality of different areas different in fluorescent powder content, and the light emitting diodes correspond to the different areas respectively. The PWM adjusting device adjusts and changes lightening time of each light emitting diode to control the irradiation stimulating time of the fluorescent powder in each area, so that the color temperature of the whole light emitting diode light source device is changed.
Description
Technical field
The present invention relates to a kind of lighting device, especially a kind of LED light source device.
Background technology
Light emitting diode is a kind of energy-saving and environmental protection, long-life solid light source, and therefore always very active to the research of led technology in recent ten years, light emitting diode also has the trend of conventional light source such as gradually replacing fluorescent lamp, incandescent lamp.In the prior art, LED light source device generally is that light emitting diode is arranged on the lead frame (lead frame), then utilize the packing colloid of doping fluorescent powder to encapsulate this light emitting diode, the optical excitation fluorescent material that described light-emitting diode chip for backlight unit sends injects to the light source outside.But the colour temperature of the light that traditional LED light source device sends generally is changeless, can't adjust, and can not satisfy actual needs.
Summary of the invention
In view of this, be necessary to provide a kind of LED light source device that changes colour temperature.
A kind of LED light source device, it comprises illuminating part, flourescent sheet and PWM adjusting device.This illuminating part comprises substrate and is arranged on some light emitting diodes on this substrate, this light emitting diode be by at least one light emitting diode chip package on the lead frame or use COB (Chip on Board) mode to be set directly on the substrate, this flourescent sheet blocks on the bright dipping light path of this light emitting diode.Comprise the different a plurality of zones of fluorescent material content in the described flourescent sheet, described light emitting diode is the different zone of correspondence respectively.Described PWM adjusting device is regulated and is changed lighting the time of chip in each light emitting diode, controlling the illuminated time that excites of fluorescent material in each zone, thereby changes the colour temperature of whole LED light source device.
The flourescent sheet of above-mentioned LED light source device comprises the different a plurality of zones of fluorescent material content, and the zones of different of the corresponding flourescent sheet of light emitting diode difference, by lighting the time of chip in each light emitting diode of PWM adjusting device adjusting change, thereby the illuminated time that excites of fluorescent material in the control flourescent sheet in each zone, thereby change colour temperature.
Description of drawings
Fig. 1 is the structural representation of LED light source device of the present invention.
Fig. 2 is the illuminating part top view of the LED light source device among Fig. 1.
Fig. 3 is the another kind of illuminating part top view of the LED light source device among Fig. 1.
Fig. 4 is the profile of the flourescent sheet of the LED light source device among Fig. 1.
The main element symbol description
| LED |
10 |
| Illuminating |
100 |
| |
200 |
| The PWM adjusting |
300 |
| |
400 |
| |
110 |
| |
120 |
| Phosphor powder layer | 210 |
| Lenticule | 220 |
The following specific embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See also Fig. 1 and Fig. 2, a kind of LED light source device 10 that the present invention's one preferred embodiments provides comprises an illuminating part 100, blocks flourescent sheet 200 and a PWM(Pulse Width Modulation on the bright dipping light path of this illuminating part 100, pulse width modulation) adjusting device 300.
Described illuminating part 100 comprises substrate 110 and is arranged on some light emitting diodes 120 on this substrate 110.Described substrate 110 is circular, and these substrate 110 centre of surfaces form a support bar 400 vertically upward.These some light emitting diodes are on the lead frame or use COB (Chip on Board) mode to be set directly on the substrate 110 by at least one light emitting diode chip package.Some light emitting diodes 120 arrange around this support bar 400.In the present embodiment, be provided with altogether two circle light emitting diodes 120 around support bar 400 on the substrate 110, wherein the light emitting diode 120 of outer ring is around the light emitting diode 120 of inner ring.These some light emitting diodes 120 can be ultraviolet light, blue light, green glow, ruddiness or white light emitting diode.Light emitting diode 120 can be that one chip or multi-chip form, and also can be that single wavelength or multi-wavelength form.
In addition, see also Fig. 3, described substrate 110 also can be slapped together by the polylith lamp plate, and as shown in Figure 3, each lamp plate is a sector structure, and every lamp plate surface is provided with two light emitting diodes 120, the common formation of the fan-shaped lamp plate of polylith one circular substrate 110.
Being understandable that the shape of described substrate 110 is not limited to the circle in the present embodiment, can also be other shapes such as the triangle that consists of of a monoblock or polylith lamp plate, quadrangle, polygon.
See also Fig. 4, described flourescent sheet 200 is a round sheet structure, and its center wears on the support bar 400 that is fixed on the substrate 110, blocks on the bright dipping light path of these some light emitting diodes 120, be divided into a plurality of zones in this flourescent sheet 200, the content of the fluorescent material in each zone is different.In the present embodiment, described a plurality of zone is a continuum, include a phosphor powder layer 210 in this flourescent sheet 200, the thickness of this phosphor powder layer 210 is non-uniform Distribution in flourescent sheet 200, and its thickness is for to successively decrease gradually from the relative opposite side of a side direction of flourescent sheet 200.The different-thickness part of the phosphor powder layer 210 in the corresponding flourescent sheet 200 of some light emitting diodes 120 difference on the substrate 110.Described phosphor powder layer 210 optional autovulcanization matter fluorescent powders, silicate fluorescent powder, Nitride phosphor, nitric oxide fluorescent powder, yttrium aluminium garnet fluorescent powder, (Sr, Ca) AlSiN
3, the mixing of SiAlON fluorescent material or above-mentioned fluorescent material.The exiting surface of this flourescent sheet 200 also is formed with some lenticules 220, and this lenticule 220 is used for scattering or focused ray.In addition, also can contain the light diffusion particle in this flourescent sheet 200, for increasing the light emission rate of LED light source device 10.
Be understandable that described flourescent sheet 200 is not limited to the circle in the present embodiment, can also be other shapes such as triangle, quadrangle, polygon.The thickness of described flourescent sheet 200 interior phosphor powder layers 210 is not limited to the distribution situation in the present embodiment, also can be that certain orientation along with flourescent sheet 200 is one and periodically distributes, for example the thickness of phosphor powder layer 210 can be that center around flourescent sheet 200 is wavy distribution.
In addition, the arrangement mode of described light emitting diode 120 is not limited to the arrangement mode that present embodiment provides, can also arrange according to the distribution situation of the fluorescent material in the flourescent sheet 200, make the respectively zones of different of corresponding flourescent sheet 200 of some light emitting diodes, thus the fluorescent material of corresponding different content.
Described PWM adjusting device 300 is connected with substrate 110, and it is used for the pulse width of each light emitting diode 120 of control, namely controls the width of the pulse voltage of each light emitting diode 120 interior chip, regulates lighting the time of each light emitting diode 120 interior chip.In the present embodiment, two circle light emitting diodes, 120 orders on the described PWM adjusting device 300 control substrates 110 are lighted.
In use, because the thickness of the phosphor powder layer 210 in the flourescent sheet 200 is non-uniform Distribution, and the phosphor powder layer 210 different-thickness parts of the corresponding flourescent sheet 200 of some light emitting diodes 120 difference, by lighting the time of PWM adjusting device 300 each light emitting diode 120 interior chip of control, controlling the illuminated time that excites of fluorescent material in each zone, thereby change the colour temperature of each light emitting diode 120 fluorescence excitation sheets 200 rear mixing light.
Compared to prior art, the flourescent sheet of LED light source device of the present invention comprises the different a plurality of zones of fluorescent material content, and the zones of different of the corresponding flourescent sheet of light emitting diode difference, by lighting the time of chip in each light emitting diode of PWM adjusting device adjusting change, thereby the illuminated time that excites of fluorescent material in the control flourescent sheet in each zone, thereby change colour temperature.
Be understandable that, for the person of ordinary skill of the art, can make change and the distortion that other various pictures are answered by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (10)
1. LED light source device, it comprises illuminating part and flourescent sheet, this illuminating part comprises substrate and is arranged on some light emitting diodes on this substrate, this flourescent sheet blocks on the bright dipping light path of this light emitting diode, it is characterized in that: comprise the different a plurality of zones of fluorescent material content in the described flourescent sheet, described light emitting diode is the different zone of correspondence respectively, described LED light source device also comprises a PWM adjusting device, this PWM adjusting device is regulated and is changed lighting the time of each light emitting diode, controlling the illuminated time that excites of fluorescent material in each zone, thereby change the colour temperature of whole LED light source device.
2. LED light source device as claimed in claim 1, it is characterized in that: described substrate surface upwards forms a support bar, and described flourescent sheet wears and is fixed on the support bar.
3. LED light source device as claimed in claim 1, it is characterized in that: described substrate is slapped together by the polylith lamp plate, and every lamp plate surface is provided with light-emitting diode chip for backlight unit.
4. LED light source device as claimed in claim 1, it is characterized in that: comprise a phosphor powder layer in the described flourescent sheet, the thickness of described phosphor powder layer is for to successively decrease gradually from the relative opposite side of a side direction of flourescent sheet.
5. LED light source device as claimed in claim 4 is characterized in that: the thickness of described phosphor powder layer periodically distributes along with the certain orientation of flourescent sheet is one.
6. LED light source device as claimed in claim 1, it is characterized in that: described flourescent sheet contains the light diffusion particle, for increasing light emission rate.
7. LED light source device as claimed in claim 1, it is characterized in that: bright dipping one side of described flourescent sheet is provided with some lenticules, is used for scattering or focused ray.
8. LED light source device as claimed in claim 1, it is characterized in that: described light emitting diode is comprised of single-chip or multi-chip.
9. LED light source device as claimed in claim 1, it is characterized in that: described light emitting diode is to be arranged on the substrate in the COB mode.
10. LED light source device as claimed in claim 1, it is characterized in that: described light emitting diode is comprised of single wavelength or multi-wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102121191A CN102900964A (en) | 2011-07-27 | 2011-07-27 | Light emitting diode light source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102121191A CN102900964A (en) | 2011-07-27 | 2011-07-27 | Light emitting diode light source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102900964A true CN102900964A (en) | 2013-01-30 |
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ID=47573359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102121191A Pending CN102900964A (en) | 2011-07-27 | 2011-07-27 | Light emitting diode light source device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237990A (en) * | 2017-06-29 | 2017-10-10 | 东莞市闻誉实业有限公司 | Fitting structure |
| CN107327732A (en) * | 2017-08-18 | 2017-11-07 | 中山市光圣半导体科技有限责任公司 | A kind of light output arrangement |
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| CN101344234A (en) * | 2008-08-22 | 2009-01-14 | 友达光电股份有限公司 | Display equipment and its adjustable illuminating module |
| CN101498416A (en) * | 2008-02-02 | 2009-08-05 | 绎立锐光科技开发(深圳)有限公司 | Emergent light color adjustable light source and method thereof |
| CN101520134A (en) * | 2008-02-25 | 2009-09-02 | 晶元光电股份有限公司 | Light emitting device |
| CN101813260A (en) * | 2010-05-13 | 2010-08-25 | 江西省晶和照明有限公司 | LED lamp device and PWM (Pulse Width Modulation) direct current supply control circuit |
| CN102853277A (en) * | 2011-06-27 | 2013-01-02 | 鸿富锦精密工业（深圳）有限公司 | LED (Light-emitting diode) light source device |
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2011
- 2011-07-27 CN CN2011102121191A patent/CN102900964A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498416A (en) * | 2008-02-02 | 2009-08-05 | 绎立锐光科技开发(深圳)有限公司 | Emergent light color adjustable light source and method thereof |
| CN101520134A (en) * | 2008-02-25 | 2009-09-02 | 晶元光电股份有限公司 | Light emitting device |
| CN101344234A (en) * | 2008-08-22 | 2009-01-14 | 友达光电股份有限公司 | Display equipment and its adjustable illuminating module |
| CN101813260A (en) * | 2010-05-13 | 2010-08-25 | 江西省晶和照明有限公司 | LED lamp device and PWM (Pulse Width Modulation) direct current supply control circuit |
| CN102853277A (en) * | 2011-06-27 | 2013-01-02 | 鸿富锦精密工业（深圳）有限公司 | LED (Light-emitting diode) light source device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237990A (en) * | 2017-06-29 | 2017-10-10 | 东莞市闻誉实业有限公司 | Fitting structure |
| CN107237990B (en) * | 2017-06-29 | 2019-06-04 | 东莞市闻誉实业有限公司 | Fitting structure |
| CN107327732A (en) * | 2017-08-18 | 2017-11-07 | 中山市光圣半导体科技有限责任公司 | A kind of light output arrangement |
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Application publication date: 20130130 |