CN105068368B - Light-emitting device, projection display equipment and light fixture - Google Patents

Light-emitting device, projection display equipment and light fixture Download PDF

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Publication number
CN105068368B
CN105068368B CN201510534308.9A CN201510534308A CN105068368B CN 105068368 B CN105068368 B CN 105068368B CN 201510534308 A CN201510534308 A CN 201510534308A CN 105068368 B CN105068368 B CN 105068368B
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China
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light
emitting
laser
shell
housing
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CN201510534308.9A
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Chinese (zh)
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CN105068368A (en
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杨毅
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杨毅
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Abstract

A kind of light-emitting device and projection display equipment and light fixture, including lasing light emitter and optical system, in addition to the first shell are proposed, first shell is assembled by least two first casing assemblies, for lasing light emitter and optical system to be enclosed in inside it;Also include wavelength convert rotating disk, the laser that the laser emitting mouthful for receiving from the first shell is projected, and its at least part of is converted into Stimulated Light.Also include second housing, the second housing is formed by least two second housing parts assemblings, for the first shell and wavelength convert rotating disk to be enclosed in inside it;Wherein, second housing inner surface includes the second radiating area corresponding with the first radiating zone position, and the first radiating area and the second radiating area are thermally coupled.Lasing light emitter and optical system have passed through the closing of the first shell and second housing twice, for once closing, and dust will low several orders of magnitude through the probability that closing is entered in laser optical path twice.

Description

Light-emitting device, projection display equipment and light fixture

Technical field

The present invention relates to light source field, more particularly to light-emitting device and the light fixture and Projection Display using the light-emitting device Device.

Background technology

At present, the fluorescent material rotating disk that laser excitation is rotated produces the fluorescence of timesharing, and this method is by relatively more extensive Applied in Projection Display industry.This scheme, can because using all solid state luminescent material, therefore service life is very high in theory To reach tens thousand of hours.But actual situation is, the service life of the light source of this method manufacture is only thousands of hours, really Long-life light source product scheme does not occur all the time.

The content of the invention

In order to solve the problems, such as the service life of above-mentioned LASER Light Source, the present invention proposes a kind of light-emitting device, including lasing light emitter And optical system, optical system is made up of at least one optical element, for the laser for guiding lasing light emitter to send.Also include first Shell, first shell is assembled by least two first casing assemblies, for lasing light emitter and optical system to be enclosed in into it It is internal;First shell includes laser emitting mouthful, for guiding laser emitting to the first enclosure;First outer surface of outer cover Also include the first radiating area.Also include wavelength convert rotating disk, the laser that the laser emitting mouthful for receiving from the first shell is projected, And its at least part of is converted into Stimulated Light.Also include second housing, the second housing is by least two second housing components It is assembled, for the first shell and wavelength convert rotating disk to be enclosed in inside it;Wherein, second housing inner surface includes and the Corresponding second radiating area of one radiating zone position, the first radiating area and the second radiating area are thermally coupled.

The present invention also proposes that a kind of projection display equipment, including above-mentioned light-emitting device are used as light source.

The present invention also proposes that a kind of light fixture, including above-mentioned light-emitting device are used as light source.

In the light-emitting device of the present invention, lasing light emitter and optical system have passed through the envelope of the first shell and second housing twice Close, for once closing, dust will low several orders of magnitude through the probability that closing is entered in laser optical path twice.Together When the first radiating area and the second radiating area it is thermally coupled, it is ensured that the heat that lasing light emitter and light path are produced is transmitted to second housing Go up and pass through second housing and conduct.

Brief description of the drawings

Fig. 1 is the structural representation of the first embodiment of the light-emitting device of the present invention;

Fig. 2 is the structural representation of another embodiment of the light-emitting device of the present invention;

Fig. 3 A are the structural representations of another embodiment of the light-emitting device of the present invention;

Fig. 3 B are the front views that Fig. 3 A embodiments medium wavelength changes rotating disk;

Fig. 4 A are the structural representations of another embodiment of the light-emitting device of the present invention;

Fig. 4 B are the front views that Fig. 4 A embodiments medium wavelength changes rotating disk;

Fig. 5 is the structural representation of another embodiment of the light-emitting device of the present invention.

Embodiment

As described in the background art, the service life of existing LASER Light Source all only thousands of hours.Although in the market is very On the specification index of multi-product target service life reach 20,000 hours even it is longer, but from measured data can see on There are a large amount of false propagandas in service life.Certain this market-oriented publicity measures need not be discussed herein.

In fact, the service life in order to extend LASER Light Source product, industrial circle has spent substantial amounts of time, manpower thing Power is studied, and also achieves some achievements in research.Research is found, on laser optical path, due to the active optical member of laser Part surface easily deposits dust, and the continuous accumulation of dust, which causes brightness, constantly to be reduced, and finally drops to the one of initial luma values When half, think that service life ends according to standard.In order to prevent dust accretions, it is thus proposed that light source is carried out " sealing " to prevent Extraneous dust enters light source internal, and has made shell by light source " sealing " inside it, tests the life-span and has been lifted, But lifted not notable.Also someone is according to proposing to carry out light source " airtight " encapsulation as a same reason, but test the life-span still Lift thousands of hours.

The continuous experiment of one-year age is up to by inventor, this problem has answer finally.Due to light source internal light Road is that heating --- heat may be sent by Wavelength converter, it is also possible to absorb light production by optical element or light source shell It is raw --- the temperature of light source internal 20 to 40 degree higher than environment temperature.Temperature difference generates pressure differential so that light source internal and outer There is the power of air flow in portion.And in actual production, either " seal " still " airtight ", for example connect using rubber ring filling Seam etc., because shell seam is many and in irregular shape, it is difficult to accomplish to be sealed to the degree for preventing air flow completely;So As the faint flowing dust of light source internal and extraneous air still can be progressed into light path, so as to cause light-source brightness to decline Subtract.

In order to lift the sealing of light-emitting device, while ensureing productibility, the present invention proposes a kind of light-emitting device, and it is tied Structure schematic diagram is as shown in Figure 1.The light-emitting device includes lasing light emitter 101 and optical system, and optical system is by least one optics member Part is constituted, for the laser 141 for guiding lasing light emitter 101 to send.Specifically optical system is filled including light splitting in the present embodiment Put 111, lens 112 and lens 113.Light-emitting device also includes the first shell 121, and first shell 121 is by least two first Casing assembly is assembled, for lasing light emitter 101 and optical system to be enclosed in inside it.First shell 121 is by least two First casing assembly is assembled mainly due to the need for actual assembled.First shell 121 includes laser emitting mouthful 122, For guiding laser emitting to the first enclosure.In the present embodiment, the laser 141 that lasing light emitter 101 is sent is transmitted successively to be divided After electro-optical device 111, lens 112 and lens 113, shone from laser emitting mouthful 122 outside the first shell 121, wherein lens 112 Effect with 113 is the outgoing of converging laser 141.

Light-emitting device also includes wavelength convert rotating disk 114, and the laser emitting mouthful 122 for receiving from the first shell 121 is penetrated The laser 141 gone out, and its at least part of is converted into Stimulated Light 142.In the present embodiment, wavelength convert rotating disk is reflective , i.e., wavelength convert rotating disk include reflection chassis and be attached to reflection chassis on wavelength conversion material layer, such laser 141 from Wavelength conversion layer side is incident simultaneously to be excited, the Stimulated Light of generation can reflected chassis effect it is anti-along the direction of laser light incident To outgoing.This partially-excited light can transmission lens 113 and lens 112, and be split after the reflection of device 111 outside first successively The outgoing of light-emitting window 123 of shell 121.For Stimulated Light 142, lens 113 and lens 112 play a part of collecting and collimating, and Light-dividing device 111 then plays a part of separation laser 141 and Stimulated Light 142.Light-emitting window 123 is a part for the first shell 121, It can play a part of closing lasing light emitter and optical system, and such as light-emitting window is exactly a transparent glass sheet.

In the present embodiment, light-emitting device also includes drive device 115, for driving wavelength convert rotating disk to rotate.So, Each point on wavelength convert rotating disk can periodically be excited rather than all the time in the state that is excited, excite sent heat Amount will be more dispersed, so as to avoid the thermal quenching effect of material for transformation of wave length.On the other hand, can be with wavelength convert rotating disk Multiple areas are distributed with, same district there are not different wavelength conversion characteristics;So as drive device 115 drives wavelength convert rotating disk to turn Dynamic, different light characteristics are presented in Stimulated Light 142, and this has special application in Projection Display.

The outer surface of first shell 121 also includes the first radiating area 121a.Light-emitting device also includes second housing 151, and this Two shells 151 are formed by least two second housing parts assemblings, for the first shell 121 and wavelength convert rotating disk to be enclosed in Inside it.Second housing 151 is formed mainly due to the need for actual assembled by least two second housing parts assemblings.Its In, the inner surface of second housing 151 include the second radiating area corresponding with the first radiating area 121a positions, the first radiating area 121a with Second radiating area is thermally coupled.

In the present embodiment, the first radiating area 121a is the radiating area of lasing light emitter 101, for being radiated for lasing light emitter 101.When Right first radiating area can also be other element radiatings, or be radiated in itself for the first shell, as long as the first radiating area and second Radiating area is thermally coupled, it is possible to ensures heat to be transmitted on second housing and is conducted by second housing.

In the present embodiment, light-emitting window 152 is also included on second housing, for guiding the light-emitting window 123 from the first shell The light of outgoing is shone outside second housing.Light-emitting window 152 is a part for second housing, and it can play a part of closing, Such as light-emitting window 152 is exactly a transparent glass sheet.

In the present embodiment, lasing light emitter and optical system have passed through the closing of the first shell and second housing twice, relatively For once closing, dust through the probability that enters in laser optical path of closing twice will low several orders of magnitude, so can be with Significantly lift the service life of light-emitting device.Experiment proves such light-emitting device long lifespan up to 30000 hours.While the One radiating area and the second radiating area are thermally coupled, it is ensured that the heat that lasing light emitter 101 and light path are produced is transmitted to second housing Go up and pass through second housing and conduct.

In the present embodiment, drive device 115 includes drives line 115a, and lasing light emitter 101 may also include drives line(In figure It is not drawn into), these lines need to pass second housing 151.Can now be punched on second housing 151 passes these lines, so Hole is sealed with glue or rubber stopper again afterwards.

The structure of another embodiment of the light-emitting device of the present invention is as shown in Figure 2.It is different from the embodiment shown in Fig. 1 It is that light-emitting device medium wavelength conversion rotating disk 214 is transmission-type, i.e., Stimulated Light 242 is the incident direction along exciting light 241 Outgoing in the same direction.Specifically, laser 241 after the convergence of lens 212 and 213 from the laser emitting mouthful outgoing of the first shell simultaneously It is incident in wavelength convert rotating disk 214, the receipts that Stimulated Light 242 does not return to the inside of the first shell 221 but passed through in second housing From the outgoing of light-emitting window 252 on second housing 251 after the collection of optical lens 216.The present embodiment has identical with the embodiment shown in Fig. 1 Beneficial effect, simply it is different on optical texture.

In the embodiment shown in fig. 1, wavelength convert rotating disk 114 can also give off heat.Because wavelength convert rotating disk is to turn It is dynamic, it is impossible to by the heat transfer that directly contacts by its heat derives.When laser power is not very big, wavelength convert rotating disk Can be with normal work;But when laser power is continued to increase to meet application demand, the temperature of wavelength convert rotating disk can It can continue to rise, be now not all right without appropriate radiating mode.In order to solve the heat dissipation problem of wavelength convert rotating disk, this hair Bright another embodiment for proposing light-emitting device, its structural representation is as shown in Figure 3A.

From unlike the embodiment shown in Fig. 1, in the present embodiment, the first fin being included on wavelength convert rotating disk 314 314a, for producing air-flow 361 in rotary work.In the present embodiment, the first fin 314a on wavelength convert rotating disk 314 Front view as shown in Figure 3 B, it is seen that first fin is the fins group of the centripetal trend along the circumferential direction arranged;When wavelength turns When changing turntable rotation, the air of center of turntable can form air-flow 361 by being thrown away along centrifugal direction.Obviously, air-flow 361 can be taken away Heat on wavelength convert rotating disk, and it is diffused into the inner space of whole second housing 351 and the shell of second housing 351 On body, the temperature of wavelength convert rotating disk is thus effectively reduced.

More preferred, in the present embodiment, the inner surface of second housing 351 includes the in the region that air-flow 361 flows through Two fins 353, for the heat on air-flow to be transmitted into second housing.Specifically, air-flow 361 is flowing through the second fin During 353, it can sufficiently be contacted with the surface of the second fin and transfer heat to the second fin so as to efficient, entered And pass to second housing housing.When the air-flow is again due to negative pressure(The air for rotating medium wavelength conversion center of turntable is thrown out of Rear center part forms negative pressure)When being inhaled into wavelength convert center of turntable, its heat carried has been communicated to second Fin and second housing, so that temperature is decreased, can continue as the radiating of wavelength convert rotating disk.

It is appreciated that the second fin can also be small surface undulation, as long as the region that second housing flows through in air-flow Surface has expanded, it is possible to strengthen the effect of heat exchange, so as to strengthen the radiating to wavelength convert rotating disk.In the present embodiment In, second housing has not only acted as the effect of the first shell of closing and wavelength convert rotating disk, also acts as wavelength convert rotating disk The effect of radiating.In order to strengthen radiating effect, the design of a variety of first fins and the second fin can be carried out, can also be by setting Put specific air channel to guide the flowing of air-flow 361, this belongs to protection scope of the present invention.

The structural representation of another embodiment of the light-emitting device of the present invention is as shown in Figure 4 A.With the implementation shown in Fig. 3 A Unlike example, in the present embodiment, the first shell 421 also includes laser light incident mouthful 424, for receiving from wavelength convert rotating disk The remaining laser of outgoing returns to the first enclosure.Specifically, in the present embodiment, the laser of the first shell of light-emitting device Exit portal 422 and laser light incident mouthful 424 are relative, and a part for wavelength convert rotating disk is located between the two.With shown in Fig. 3 B Wavelength convert rotating disk unlike, wavelength convert rotating disk 414 in the present embodiment also includes a transmissive segments 414b, the transmission There is no fin 414a in section.Specifically transmissive segments 414b can be the transmission breach reflected on chassis.When transmissive segments 414b turns , can be through saturating from the laser 443 of 422 outgoing of laser emitting mouthful when moving between laser emitting mouthful 422 and laser light incident mouthful 424 Section 414b is penetrated to collect so as to return to the first enclosure by laser light incident mouthful 424, and be collected lens 416.Work as wavelength convert When other parts on rotating disk outside transmissive segments 414b are turned between laser emitting mouthful 422 and laser light incident mouthful 424, laser 441 Wavelength conversion layer is incident in excite generation Stimulated Light 442.In the present embodiment, the optical system inside the first shell 421 Also include two speculums 417 and a Multiplexing apparatus 418, for by the light path of laser 443 and Stimulated Light 442 be combined into it is a branch of simultaneously Outgoing, so can be obtained by the emergent light that laser and Stimulated Light timesharing are produced, and this light has important use in Projection Display On the way.

In the present embodiment, the light that fraction of laser light transmission peak wavelength changes rotating disk is added relative to the embodiment shown in Fig. 3 A Road, it is achieved thereby that the timesharing output of laser and Stimulated Light.Meanwhile, the optical element of optical system all the first shell seal it It is interior, therefore have the long-life beneficial effect of identical with previous embodiment.

Embodiment shown in Fig. 5 is the deformation of Fig. 4 A illustrated embodiments.From unlike Fig. 4 A illustrated embodiments, outside first Light-emitting window on shell 521 is a lens, and it can play a part of changing emergent light light distribution, it is possible to according to actual needs To design.This light-emitting window lens can inherently play a part of closing lasing light emitter and optical system.With implementing shown in Fig. 4 A Another difference of example is that lens 513 and 516 have inherently each served as the effect of laser emitting mouthful and laser light incident mouthful, The effect of the first enclosure element of closing is served, becomes a part for the first shell.Structural member can so be simplified Design, be a kind of than more preferably scheme.It is with the 3rd difference of Fig. 4 A illustrated embodiments, the of the present embodiment Include porous material 554 in two shells 551, for adsorbing dust, so can effectively reduce in second housing and be hanged in air The quantity of floating dust, so as to reduce the probability that dust is entered in the first enclosure light path, further lifts the life-span.At this Porous material 554 is fixed on the internal partial wall of second housing 551 in embodiment, and this is simplest setting.It is of course possible to manage Solution, porous material may be equally applicable to the first enclosure, or porous material simultaneously applied to the first shell and second Enclosure, action principle is identical with beneficial effect.Porous material 554 can be metal polyporous material, such as copper particle sintered Porous material or other porous materials, be not limited herein.

The present embodiment can be applied equally to other implementations relative to the change design that the embodiment shown in Fig. 4 A is made Example, will not enumerate explanation herein.

To sum up the explanation of several embodiments is it is appreciated that be used for the first casing assembly of assembled first shell, and be used for The second housing component of assembled second housing, it may be possible to structural member, it is also possible to optical element, in some instances it may even be possible to be lasing light emitter in itself, Sealing effect can be played in a word.For the optical element for closing, it might even be possible to be understood that, its outside table Face is a part for shell(That is casing assembly), its surface internally is a part for optical system.And if using laser Source is in itself as the first casing assembly, as a same reason, and the surface of its facing external is interpreted as a part for the first shell, and face The part of transmitting laser internally is interpreted as by the lasing light emitter of the first shell seal.

The present invention also proposes that a kind of projection display equipment, including above-mentioned light-emitting device are used as light source.

The present invention also proposes that a kind of light fixture, including above-mentioned light-emitting device are used as light source.

Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills Art field, is included within the scope of the present invention.

Claims (11)

1. a kind of light-emitting device, it is characterised in that:
Including lasing light emitter and optical system, optical system is made up of at least one optical element, is sent for guiding lasing light emitter Laser;Also include the first shell, first shell is assembled by least two first casing assemblies, for by lasing light emitter and light System lock is learned inside it;First shell includes laser emitting mouthful, for guiding laser emitting to the first enclosure;Should First outer surface of outer cover also includes the first radiating area;
Also include wavelength convert rotating disk, the laser that the laser emitting mouthful for receiving from the first shell is projected, and by its at least portion That divides is converted to Stimulated Light;
Also include second housing, the second housing forms by least two second housing parts assemblings, for by the first shell and Wavelength convert rotating disk is enclosed in inside it;Wherein, second housing inner surface includes the second radiating area, and the first radiating area and second dissipate Hot-zone is thermally coupled.
2. light-emitting device according to claim 1, it is characterised in that include the first fin on the wavelength convert rotating disk, For producing air-flow in rotary work.
3. light-emitting device according to claim 2, it is characterised in that the inner surface of the second housing is in the air-flow stream The region crossed includes the second fin or relief fabric, for the heat on air-flow to be transmitted into second housing.
4. light-emitting device according to claim 2, it is characterised in that first fin be along the circumferential direction arrange to The fins group of heart trend.
5. light-emitting device according to any one of claim 1 to 3, it is characterised in that first radiating area is laser The radiating area in source, for for laser source heat-dissipating.
6. light-emitting device according to any one of claim 1 to 3, it is characterised in that first radiating area and second The zone position that radiates correspondence, the optical element is lens.
7. light-emitting device according to any one of claim 1 to 3, it is characterised in that the wavelength convert rotating disk includes Reflection chassis and the wavelength conversion layer being attached on reflection chassis and transmissive segments;First shell also includes laser light incident Mouthful, the laser for receiving from the transmissive segments outgoing returns to the first enclosure.
8. light-emitting device according to any one of claim 1 to 3, it is characterised in that the laser of first shell goes out Loophole is a lens.
9. light-emitting device according to any one of claim 1 to 3, it is characterised in that first shell and/or second Enclosure includes porous material.
10. a kind of projection display equipment, it is characterised in that including light-emitting device according to any one of claim 1 to 9 It is used as light source.
11. a kind of light fixture, it is characterised in that be used as light including light-emitting device according to any one of claim 1 to 9 Source.
CN201510534308.9A 2015-08-27 2015-08-27 Light-emitting device, projection display equipment and light fixture CN105068368B (en)

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Application Number Priority Date Filing Date Title
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CN105068368B true CN105068368B (en) 2017-08-29

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105353578B (en) * 2015-12-07 2017-08-18 杨阳 Light-source system and its application
JP6638419B2 (en) * 2016-01-20 2020-01-29 セイコーエプソン株式会社 Light source device and projector
CN108761769A (en) * 2018-02-10 2018-11-06 深圳市海司恩科技有限公司 Display and electronic equipment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007248753A (en) * 2006-03-15 2007-09-27 Funai Electric Co Ltd Projection device
TWI459123B (en) * 2013-01-17 2014-11-01 Hon Hai Prec Ind Co Ltd Cooling apparatus of porjector
JP2014174221A (en) * 2013-03-06 2014-09-22 Nippon Seiki Co Ltd Light source device
WO2014171151A1 (en) * 2013-04-18 2014-10-23 パナソニック株式会社 Projection-type image display device
JP2015094860A (en) * 2013-11-12 2015-05-18 株式会社リコー Illumination light source device and image projection device
CN104614926A (en) * 2014-10-28 2015-05-13 扬州吉新光电有限公司 Wavelength conversion device with a cooling structure baseplate and light emitting device
CN205003433U (en) * 2015-08-27 2016-01-27 杨毅 Illuminator , projection display equipment and lamps and lanterns

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Effective date of registration: 20191224

Address after: 200941 room 1265, building 2, No. 57, Tangnan street, Yuepu Town, Baoshan District, Shanghai

Patentee after: Shanghai Anming Technology Center (limited partnership)

Address before: 201203 No. 49, Lane 12, blue wave road, Shanghai, Pudong New Area 801

Patentee before: Yang Yi