CN202629623U - Light-emitting devices - Google Patents
Light-emitting devices Download PDFInfo
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- CN202629623U CN202629623U CN2012200535417U CN201220053541U CN202629623U CN 202629623 U CN202629623 U CN 202629623U CN 2012200535417 U CN2012200535417 U CN 2012200535417U CN 201220053541 U CN201220053541 U CN 201220053541U CN 202629623 U CN202629623 U CN 202629623U
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- wavelength conversion
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- gas
- emitting device
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Abstract
The utility model provides a light-emitting device which comprises an excitation light source used for transmitting exciting light and a wavelength conversion device, wherein the wavelength conversion device comprises a baseplate and a wavelength conversion layer which is fixedly connected with the baseplate, and the exciting light is irradiated on the wavelength conversion layer so as to form an exciting light spot; and the light-emitting device also comprises a nozzle used for spouting gas, and the gas ejected by the nozzle shoots the position of the exciting light spot on the wavelength conversion layer. The utility model also provides the other light-emitting device which comprises an excitation source, a wavelength conversion device, a driving device and a nozzle used for spouting gas, wherein the driving device is used for driving the baseplate as well as the wavelength conversion layer and the exciting light spot to do relative movement in a periodicity manner; and the gas ejected by the nozzle shoots the sweep-over track of at least one part of exciting light spot on the wavelength conversion layer. According to the utility model, the gas ejected by the nozzle is used for directly carrying out heat exchange with the wavelength conversion layer, so that the temperature of the wavelength conversion layer is reduced.
Description
Technical field
The utility model relates to light source field, particularly relates to a kind of light-emitting device based on the wavelength conversion.
Background technology
More and more obtained people's attention at present based on the semiconductor light sources of material for transformation of wave length.This mainly is that high efficiency by material for transformation of wave length causes.For example; U.S. Pat 7547114 proposes a kind of light-source structure; It utilizes a wavelength conversion of the excitation colour wheel of excitation source emission, and utilizes the rotation of rotating disk to make the material for transformation of wave length of different colours be excited optical excitation in turn to produce the light sequence of different colours.
Along with people's improves constantly for the requirement of brightness; The luminous power of exciting light is also increasingly high; Therefore the heat that sends on the wavelength conversion colour wheel is also increasing; And then the temperature of material for transformation of wave length is increasingly high, and this directly causes the decline of the efficient of material for transformation of wave length, even has influenced the long term reliability of material for transformation of wave length.Therefore how lower the temperature for material for transformation of wave length and become the key point of this light source technology.
Chinese patent 200810065225 proposes to use thermal conductive substrate for applying the device of material for transformation of wave length heat radiation above that; In this device; The heat conducting mode of main dependence is delivered to the heat of material for transformation of wave length on the thermal conductive substrate; But when the power of exciting light is increasing, what the radiating effect of this mode was not enough often.
Therefore need a kind of light-emitting device, can effectively reduce the temperature of material for transformation of wave length.
Summary of the invention
The technical problem underlying that the utility model solves is to propose a kind of light-emitting device, can effectively reduce the temperature of material for transformation of wave length.
The utility model proposes a kind of light-emitting device; Comprise the excitation source and the Wavelength converter that are used to launch exciting light; This Wavelength converter comprises substrate and the wavelength conversion layer that is mutually permanently connected with substrate, and exciting light is incident in to form on the wavelength conversion layer and excites hot spot; Also comprise the nozzle that is used for jet gas, excite the position of hot spot on the gas directive wavelength conversion layer that this nozzle sprayed.
The utility model also proposes another kind of light-emitting device; Comprise the excitation source and the Wavelength converter that are used to launch exciting light; This Wavelength converter comprises substrate and the wavelength conversion layer that is mutually permanently connected with substrate, and exciting light is incident in to form on the wavelength conversion layer and excites hot spot; Also comprise drive unit, this drive unit is used for driving substrate and wavelength conversion layer and excites the hot spot periodic relative motion; Also comprise the nozzle that is used for jet gas, on the gas directive wavelength conversion layer that this nozzle sprayed at least a portion excite hot spot inswept track.
In the light-emitting device of the utility model, thus utilize the gas of nozzle ejection can be directly and wavelength conversion layer carry out the temperature that heat exchange reduces wavelength conversion layer.
Description of drawings
Fig. 1 is the structural representation of first embodiment of the light-emitting device of the utility model;
Fig. 2 is the structural representation of second embodiment of the light-emitting device of the utility model;
Fig. 3 is the operation principle sketch map of the nozzle in the light-emitting device of the utility model;
Fig. 4 a, 4b, 4c and 4d are the structural representations of the 3rd embodiment of the light-emitting device of the utility model;
Fig. 5 is the structural representation of the 4th embodiment of the light-emitting device of the utility model.
The specific embodiment
The structural representation of first embodiment of the light-emitting device of the utility model is as shown in Figure 1.In the present embodiment; Light-emitting device 100 comprises excitation source (figure does not draw) and the Wavelength converter that is used for launching exciting light 121; This Wavelength converter comprises substrate 113 and the wavelength conversion layer 111 that is mutually permanently connected with substrate 113, and exciting light 121 is incident in to form on the wavelength conversion layer and excites hot spot; Also comprise the nozzle 117 that is used for jet gas 131, excite the position of hot spot on the gas 131 directive wavelength conversion layers 111 that this nozzle 117 is sprayed.
In the present embodiment; One side of the substrate dorsad 113 of wavelength conversion layer 111 light 121 that is excited excites and launches Stimulated Light 123; This Stimulated Light is divided into two parts; First is directly from be excited a side outgoing of light 121 incidents of wavelength conversion layer 111, second portion then outgoing in a side of substrate 113, this part light at least part by substrate 113 reflection backs finally from be excited a side outgoing of light incident of wavelength conversion layer 111.Therefore in order to realize higher efficient, preferred, in this light-emitting device, substrate 113 is the reflecting layer towards the one side of wavelength conversion layer 111, and this reflecting layer is used to reflect Stimulated Light 123; Preferably, exciting light 121 also can be reflected in this reflecting layer, makes the residual excitation light 121 that is not absorbed by wavelength conversion layer 111 that is incident on this reflecting layer be reflected back toward wavelength conversion layer 111 realization secondary excitations.The reflecting layer can be the reflectance coating that directly is plated on the substrate 113, also can be the reflector plate that is attached on the substrate 113.
In the present embodiment, also distribute heat in the time of wavelength conversion layer 111 stimulated emission Stimulated Light, this part heat is delivered on the substrate 113.The thermal conductivity factor of substrate 113 is high more, and its radiating effect is just good more; Therefore, preferred, metals such as the material copper of substrate 113 or aluminium.In addition, for the heat that guarantees wavelength conversion layer 111 can be delivered on the substrate 113 fast, preferred, wavelength conversion layer 111 directly is coated on the substrate 113.
In this embodiment; Preferably; Also comprise the light-dividing device 114 between the light path that is arranged in excitation source (figure does not draw) and wavelength conversion layer 111; This light-dividing device 114 separates exciting light 121 with transmission exciting light 121 and the mode that reflects Stimulated Light 123 with the light path of Stimulated Light 123, avoided Stimulated Light 123 to return excitation source and the light source that is excited absorbs and forms loss along the light path of exciting light 121.
In the present embodiment, light-dividing device 114 is beam split optical filters, and it utilizes the difference of exciting light and Stimulated Light wavelength that both light paths are separated; Be appreciated that this beam split optical filter can also separate exciting light with the mode of transmission Stimulated Light reflection exciting light with the light path of Stimulated Light.This is a prior art, does not give unnecessary details here.Except the beam split optical filter; Light-dividing device can also be the reflection unit that is made up of the reflecting surface around through hole and the through hole; It utilizes the optical extend of exciting light and Stimulated Light different; The through hole that makes exciting light pass reflection unit is incident in wavelength conversion layer, and the major part of Stimulated Light then is reflected on the reflecting surface around the through hole simultaneously.This belongs to prior art equally, does not give unnecessary details here.
In the present embodiment; Excite the position of hot spot on the gas 131 directive wavelength conversion layers 111 that nozzle 117 sprays; Through the contact and the heat exchange of gas molecule wavelength conversion layer, can take away the heat on the wavelength conversion layer through gas molecule, and then reach the purpose of forced refrigeration.Therefore be appreciated that the temperature of gas is low more, its refrigeration is good more.
From practical angle, the temperature of gas 131 is that normal temperature is realized the most easily; Because the temperature of wavelength conversion layer is higher than normal temperature, even reach more than 100 degrees centigrade, so gas at normal temperature is to realize the refrigeration purpose of wavelength conversion layer.Further, from practical standpoint, using air is that realization the most easily also is the minimum mode of cost as the composition of gas 131, uses nitrogen then to have the inactive advantage of chemical property.Certainly, also can use other gas, or treated gas, for example through removal the air of steam treatment, also in the protection domain of the utility model.
Be appreciated that then its cooling-down effect to wavelength conversion layer 111 is better if can on the basis of normal temperature, reduce the temperature of gas 131 again; Therefore gas 131 preferably can also be cooled gas except being the gas at normal temperature.This can realize that Fig. 3 has enumerated an example of realizing that cryogenic gas sprays.Wherein, Gas 331 flows to nozzle 317 through piping 318; Can be in this process through the outside of refrigerating section 316. in this section refrigerating section 316; Wrapped up refrigerator 319, this refrigerator 319 can make the temperature of the duct wall of refrigerating section reduce, and then temperature is able to descend when gas 331 flows through refrigerating section 316.In this example, flowing of gas 331 can be promoted by a fan or air blast, and refrigerator then can adopt various ways, for example semiconductor cooler etc.In addition, can also use cold air rifle technology; The cold air rifle utilizes compressed air, and through the conversion of vortex tube, at the end generation cold air of vortex tube, the other end produces hot gas.This is a prior art, does not give unnecessary details here.
The structural representation of second embodiment of the light-emitting device of the utility model is as shown in Figure 2.Different with first embodiment is, in the present embodiment, substrate 213 is a transparent material, glass for example, and exciting light 221 must just can be incident in wavelength conversion layer 211 behind the transmission substrate 213.Substrate 213 is coated with interference thin film towards the one side of wavelength conversion layer 211, and this interference thin film can reflect Stimulated Light 223 by transmission exciting light 213 simultaneously, and this makes the major part in the Stimulated Light be able to the opposite outgoing from the light activated one side that is excited.
In the present embodiment, make between substrate 213 and the wavelength conversion layer 211 to have air-gap, help simplifying the design and the manufacturing process of the interference thin film on the substrate 213.This is equally applicable to the 4th following embodiment.Air-gap between substrate 213 and the wavelength conversion layer not with aforesaid both be fixedly connected and contradict; This is because can adopt a lot of methods that these two conditions are satisfied simultaneously; For example with being bonded on the substrate around the wavelength conversion layer, there is air-gap between the wavelength conversion layer and substrate on the position at hot spot place and excite; For example can adopt another piece clear glass that wavelength conversion layer is pressed on the substrate again.
In the first above-mentioned embodiment, the putting angle and will consider the Mechanic Interference Problem with optical element of nozzle 117 is for example with the interference of light-dividing device 114.And in the present embodiment,, making the be excited optical texture of light activated one side of wavelength conversion layer become simply because Stimulated Light differs from the one side outgoing of exciting light incident from wavelength conversion layer, this has just reduced nozzle and these optical texture possibility of interference.But present embodiment is compared with first embodiment simultaneously, owing to the gas 231 that freezes is not directly injected on the wavelength conversion layer, but is blocked by substrate 213; Though this gas 231 also is incident in the position that excites hot spot, its cooling-down effect can be than a little less than first embodiment.
Certainly, in the present embodiment, can nozzle 217 be positioned over a side of wavelength conversion layer 211 emission Stimulated Light and make the position that excites hot spot on the gas directive wavelength conversion layer 211 of its ejection.
In practical application; Side in the emission Stimulated Light 223 of wavelength conversion layer 211 also possibly placed an optical filter 219; The spectrum that this optical filter is used to filter out a part of Stimulated Light 223 makes its color that the variation of needs take place, and the red-light spectrum composition that for example filters out in the yellow green Stimulated Light makes its color greener.At this moment, even with a side of the language wavelength conversion layer of nozzle 217 wind 211 emission Stimulated Light, the gas of nozzle ejection can be blocked by optical filter 219 too.
The structure of the 3rd embodiment of the utility model is shown in Fig. 4 a.Different with first embodiment is, in the present embodiment, light-emitting device 400 also comprises drive unit 435, and this drive unit 435 is used for driving substrate 413 and wavelength conversion layer 411 and excites the hot spot periodic relative motion; Also comprise the nozzle 417 that is used for jet gas, on the gas directive wavelength conversion layer 411 that this nozzle 417 is sprayed at least a portion excite hot spot inswept track.
In the present embodiment; The vertical view of the light-emitting device shown in Fig. 4 b; Substrate 413 is processed to have circular external shape, and drive unit drives this substrate 413 and rotates around its center of circle, the optical excitation that is excited that the diverse location of wavelength conversion layer 411 is taken turns; This can reduce heat significantly in local wavelength's transition material accumulation, and then significantly reduces the operating temperature of material for transformation of wave length.
Exciting light is incident in to form on the wavelength conversion layer 411 and excites hot spot 422, and rotates along with drive unit driving substrate 413, and this excites hot spot 422 on wavelength conversion layer, to form track 424.In the present embodiment; The gas that nozzle 417 ejects is incident in the position that excites hot spot 422 on the wavelength conversion layer; Hot spot 422 excites because wavelength conversion layer 411 is excited in turn; Therefore excite the temperature of wavelength conversion layer at hot spot 422 places always the highest, so so nozzle 417 directly can realize best cooling-down effects because the temperature difference is maximum facing to exciting the cooling of hot spot 422 places.But in actual use,, also can make the gas-cooled place of nozzle ejection not excite hot spot 422 places because the problem of above-mentioned nozzle and optical element mechanical interference exists.Since excite hot spot the track 424 on the inswept wavelength conversion layer all be the higher position of temperature; Therefore if the gas of nozzle ejection can directive excite hot spot at least a portion on the inswept track 424; Just can be reached for the wavelength conversion layer cool effect, shown in Fig. 4 d.
In the present embodiment, in the vertical view of the light-emitting device shown in Fig. 4 b, wavelength conversion layer 411 includes only a kind of material for transformation of wave length; In fact wavelength conversion layer 411 can comprise multi-wavelength's transition material, shown in Fig. 4 c.Wherein, comprise a plurality of sections 411a, 411b and 411c on the substrate 413, wherein different sections can comprise the different wavelengths conversion layer, and for example 411a is the blue wavelength transition material layer, and 411b is the green wavelength transition material layer, and 411c is the red wavelength transition material layer; Along with the driving of CD-ROM drive motor 435 makes be excited the in turn coloured light that sends different colours of optical excitation and then sequential of these three sections.These a plurality of sections can also not exclusively be the material for transformation of wave length layer; For example section 411a is diffusion material or does not apply any material; Section 411b and 411c are respectively green glow and red light wavelength transition material layer; When exciting light is blue light, section 411a directly scattering and/or reflection exciting light with realization blue light monochromatic output.
The structural representation of the light-emitting device of the 4th embodiment of the utility model is as shown in Figure 5.Different with above-mentioned second embodiment is, in the present embodiment, light-emitting device also comprises drive unit 535, and this drive unit 535 is used for driving substrate 513 and wavelength conversion layer 511 and excites the hot spot periodic relative motion; Also comprise the nozzle 517 that is used for jet gas, on the gas directive wavelength conversion layer 511 that this nozzle 517 is sprayed at least a portion excite hot spot inswept track.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (12)
1. a light-emitting device is characterized in that, comprising:
Be used to launch the excitation source of exciting light;
Wavelength converter comprises substrate and the wavelength conversion layer that is mutually permanently connected with substrate, and said exciting light is incident in to form on the wavelength conversion layer and excites hot spot;
Be used for the nozzle of jet gas, excite the position of hot spot on the gas directive wavelength conversion layer that this nozzle sprayed.
2. light-emitting device according to claim 1 is characterized in that, said real estate is the reflecting layer to the one side of wavelength conversion layer.
3. light-emitting device according to claim 1 is characterized in that, said substrate is a metal material, and said wavelength conversion layer is coated on the substrate.
4. light-emitting device according to claim 1 is characterized in that, said gas is gas at normal temperature or cooled gas.
5. light-emitting device according to claim 4 is characterized in that, said gas is air or nitrogen.
6. a light-emitting device is characterized in that, comprising:
Be used to launch the excitation source of exciting light;
Wavelength converter comprises substrate and the wavelength conversion layer that is mutually permanently connected with substrate, and said exciting light is incident in to form on the wavelength conversion layer and excites hot spot;
Drive unit, this drive unit are used for driving substrate and wavelength conversion layer and the said hot spot periodic relative motion that excites;
Be used for the nozzle of jet gas, on the gas directive wavelength conversion layer that this nozzle sprayed at least a portion excite hot spot inswept track.
7. light-emitting device according to claim 6 is characterized in that, excites the position of hot spot on the gas directive wavelength conversion layer of said nozzle ejection.
8. light-emitting device according to claim 6 is characterized in that, said real estate is the reflecting layer to the one side of wavelength conversion layer.
9. light-emitting device according to claim 6 is characterized in that, said substrate is a metal material, and said wavelength conversion layer is coated on the substrate.
10. according to any described light-emitting device in the claim 6 to 8, it is characterized in that said substrate is a glass material, have air-gap between said substrate and the said wavelength conversion layer.
11. light-emitting device according to claim 6 is characterized in that, said gas is gas at normal temperature or cooled gas.
12. light-emitting device according to claim 11 is characterized in that, said gas is air or nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200535417U CN202629623U (en) | 2012-02-17 | 2012-02-17 | Light-emitting devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200535417U CN202629623U (en) | 2012-02-17 | 2012-02-17 | Light-emitting devices |
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| CN202629623U true CN202629623U (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200535417U Expired - Lifetime CN202629623U (en) | 2012-02-17 | 2012-02-17 | Light-emitting devices |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597387A (en) * | 2018-02-10 | 2018-09-28 | 深圳市海司恩科技有限公司 | Wavelength convert head, pixel unit, display and electronic equipment |
| CN108663795A (en) * | 2018-02-10 | 2018-10-16 | 深圳市海司恩科技有限公司 | Anti-reflection wavelength convert head, pixel unit, display and electronic equipment |
| CN108681061A (en) * | 2018-02-10 | 2018-10-19 | 深圳市海司恩科技有限公司 | Temperature control wavelength convert head, pixel unit, display and electronic equipment |
| CN108766256A (en) * | 2018-02-10 | 2018-11-06 | 深圳市海司恩科技有限公司 | Wavelength convert head, pixel unit, display, electronic equipment and detection method |
-
2012
- 2012-02-17 CN CN2012200535417U patent/CN202629623U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597387A (en) * | 2018-02-10 | 2018-09-28 | 深圳市海司恩科技有限公司 | Wavelength convert head, pixel unit, display and electronic equipment |
| CN108663795A (en) * | 2018-02-10 | 2018-10-16 | 深圳市海司恩科技有限公司 | Anti-reflection wavelength convert head, pixel unit, display and electronic equipment |
| CN108681061A (en) * | 2018-02-10 | 2018-10-19 | 深圳市海司恩科技有限公司 | Temperature control wavelength convert head, pixel unit, display and electronic equipment |
| CN108766256A (en) * | 2018-02-10 | 2018-11-06 | 深圳市海司恩科技有限公司 | Wavelength convert head, pixel unit, display, electronic equipment and detection method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000 20-22, 20-22 headquarters building, 63 high tech Zone, Xuefu Road, Nanshan District, Guangdong Province, Guangdong. Patentee after: APPOTRONICS Corp.,Ltd. Address before: 518000 Nanshan District, Shenzhen, Guangdong, Guangdong Province, Guangdong Road, 63 Xuefu Road, high-tech zone, 21 headquarters building, 22 floor. Patentee before: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. Address after: 518000 Nanshan District, Shenzhen, Guangdong, Guangdong Province, Guangdong Road, 63 Xuefu Road, high-tech zone, 21 headquarters building, 22 floor. Patentee after: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. Address before: 518057 Fangda Building, South 12 Road, Nanshan Science Park, Shenzhen City, Guangdong Province Patentee before: APPOTRONICS Corp.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |
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| CX01 | Expiry of patent term |