CN101907820B - DMD (Digital Mirror Device) heat-radiation structure and projector applied same - Google Patents
DMD (Digital Mirror Device) heat-radiation structure and projector applied same Download PDFInfo
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- CN101907820B CN101907820B CN2009103029693A CN200910302969A CN101907820B CN 101907820 B CN101907820 B CN 101907820B CN 2009103029693 A CN2009103029693 A CN 2009103029693A CN 200910302969 A CN200910302969 A CN 200910302969A CN 101907820 B CN101907820 B CN 101907820B
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Abstract
The invention relates to a DMD (Digital Mirror Device) heat-radiation structure comprising an optical engine body, a DMD module, a heat-conducting assembly, a fan, a light source assembly and a flow-guiding barrel, wherein the DMD module is arranged on the optical engine body; one end of the heat-conducting assembly is tightly attached to the back of the DMD module; the fan is arranged at one side of the optical engine body, is mated with the heat-conducting assembly and comprises an air outlet; the light source assembly is arranged on the optical engine body and is provided with a cooling air port; and the flow-guiding barrel is arranged between the fan and the light source assembly, an opening at one end of the flow-guiding barrel is positioned at the air outlet of the fan, and an opening at the other end is just opposite to the cooling air port of the light source assembly. By utilizing one fan for simultaneously carrying out heat radiation to the DMD module and the light source assembly, the DMD heat-radiation structure can save elements and improve heat-radiation efficiency. The invention also relates to a projector applying the DMD heat-radiation structure.
Description
Technical field
The present invention relates to a kind of radiator structure, the projector that relates in particular to a kind of DMD radiator structure and use this DMD radiator structure.
Background technology
The important numbers optical devices of digital micro-mirror device (digital mirror device is designated hereinafter simply as DMD) in projector, using at present, thus it comes reflection ray to form picture by ten hundreds of small controlled eyeglasses.Light source emits beam and is radiated at the temperature rising that can make DMD on the DMD in the projector, thereby the upward integrated a large amount of control circuit of while DMD also can produce sizable heat when work the DMD temperature is risen.Too high temperature can make reduce the serviceable life of DMD, even may damage DMD.For this reason; usually can adopt radiating fin that DMD is dispelled the heat; yet; the radiating efficiency of radiating fin is unsatisfactory; because; radiating fin only dispels the heat by the heat conduction of fin, thereby the area that the number of radiating fin and the big or small restriction that is subjected to the inner small space of projector make radiating fin contact with air is less, can not efficiently radiates heat.
Summary of the invention
In view of this, be necessary to provide a kind of and can carry out the DMD radiator structure of efficiently radiates heat and the projector that uses this DMD radiator structure DMD.
A kind of DMD radiator structure comprises an optical engine body, a DMD module, a heat-conductive assembly, a fan, a light source assembly and a guide shell.Described DMD module is arranged on the described optical engine body.Described heat-conductive assembly comprises a conducting strip and a heating column, and described conducting strip is fitted on the described DMD module, and described heating column is pressed together on the described conducting strip.Described fan is arranged on described optical engine body one side over against described DMD module, and fits with the other end of described heat-conductive assembly.Described fan comprises a shell, an air inlet and an air outlet.Described air inlet and described air outlet all are formed on the described shell, and described air inlet runs through described shell, described air outlet axially and described air inlet axial vertical.Described light source assembly is arranged on the opposite side of contiguous described fan on the described optical engine body, and described light source assembly is provided with cooling air port.Described guide shell is arranged between described fan and the light source assembly, and the one end opening is positioned at the air outlet place of described fan, and other end opening is over against the cooling air port of described light source assembly.
A kind of projector, it comprises a casing, a plurality of system fan.This projector also comprises aforesaid DMD radiator structure, the DMD radiator structure is arranged on described casing inside, on the sidewall of the fan of corresponding described DMD radiator structure on the described casing and light source assembly, be respectively arranged with first air port and second air port, described a plurality of system fan is arranged in the described casing and with second air port of described casing and aligns mutually, the wind that makes described system fan blow out circulates in described casing inside, to take away the heat that built-in system was produced of described projector.
Compare prior art, the projector of DMD radiator structure of the present invention and application thereof dispels the heat to DMD module and light source assembly by same fan, can save the radiating fin in order to the DMD module is dispelled the heat in the prior art.Can accelerate the heat radiation of DMD module simultaneously by fan.In addition, by a fan simultaneously to the service efficiency of DMD module and light source assembly heat radiation can raising fan.
Description of drawings
Fig. 1 is the three-dimensional exploded view of a kind of DMD radiator structure provided by the invention.
Fig. 2 is the assembly drawing of DMD radiator structure among Fig. 1.
Fig. 3 is projector's synoptic diagram of the DMD radiator structure in the application drawing 1.
Embodiment
See also Fig. 1 and 2, a kind of DMD radiator structure 100 that better embodiment of the present invention provides.Described DMD radiator structure 100 comprises 140, one light source assemblies 150 of 130, one fans of 120, one heat-conductive assemblies of 110, one DMD modules of an optical engine body and a guide shell 160.Described DMD module 120 is arranged on the described optical engine body 110.One end of described heat-conductive assembly 130 is close to the back of described DMD module 120.Described fan 140 is arranged on described optical engine body 110 1 sides over against described DMD module 120, and fits with the other end of described heat-conductive assembly 130, and described fan 140 comprises an air outlet 141.Described light source assembly 150 is arranged on the opposite side of contiguous described fan 140 on the described optical engine body 110, and described light source assembly 150 is provided with cooling air port (figure does not show).Described guide shell 160 is arranged between described fan 140 and the light source assembly 150, and the one end opening is positioned at air outlet 141 places of described fan 140, and other end opening is over against the cooling air port of described light source assembly 150.
Described optical engine body 110 inside are provided with a plurality of element such as optical elements (figure does not show) such as colour wheel, integration rod, prism group, reflective mirror and ejaculation lens set in order to modulation light, the light that is sent in order to the described light source assembly 150 of direction propagation is to described DMD module 120, and through imaging on an optical screen or the screen after 120 reflections of DMD module.Described optical engine body 110 comprises one first bearing wall 112 and one second bearing wall 114.Described first bearing wall 112 and described second bearing wall, 114 approximate vertical, and first bearing wall 112 has been provided with window 112a in order to ccontaining DMD module 120.Described second bearing wall 114 is in order to carrying light source assembly 150, and described second bearing wall 114 is provided with in order to the light hole (figure does not show) by light.
Described DMD module 120 is arranged on the described optical engine body 110, and be contained in the empty window 112a of described first bearing wall 112, and the minute surface of described DMD module 120 is towards the inside of described optical engine body 110, the another side relative with described minute surface towards the outside of described optical engine body 110.
Described heat-conductive assembly 130 comprises a conducting strip 132 and a heating column 134, and described conducting strip 132 is fitted on the described DMD module 120 and the relative opposite side of its minute surface one side, and described heating column 134 is pressed together on the described conducting strip 132.Described conducting strip 132 adopts Heat Conduction Material such as heat-conducting cream, heat-conducting silicone grease, and heat radiation oil, materials such as heat conduction mud are made, thereby use so that heating column 134 effectively conducts the heat that DMD module 120 produces because of heating with the heating surface excellent contact of DMD module 120.
Described fan 140 is arranged on first bearing wall, 112 outsides of described optical engine body 110, and aligns mutually with described DMD module 120.Described fan 140 comprises a blower fan that is arranged on the shell 142 on described first bearing wall 112 and is arranged on shell 142 inside (figure does not show).Described shell 142 is provided with the air inlet 142a that runs through described shell 142, be formed with a plurality of sway braces 144 that radially are provided with along described air inlet 142a at described shell 142 around the position of described air inlet 142a, be formed with a back up pad 146 in the end of described sway brace 144 in order to the blower fan that supports described fan 140 and the other end that is closely pressed together on described heating column 134.Described air outlet 141 is formed on the described shell 142, and the axis approximate vertical of the axis of described air outlet 141 and air inlet 142a.The shell 142 of described fan 140, sway brace 144 and back up pad 146 all adopt the alloy material of the good material of thermal conductivity such as iron, aluminium, magnesium or above-mentioned material to make, thereby will diffuse to rapidly on shell 142, sway brace 144 and the back up pad 146 of fan 140 by the heat of heating column 134 conduction, thereby and the blower fan by fan 140 improve circulation of air speed and quicken heat radiation.Be appreciated that thermal interface material to be set between described heating column 134 and the described back up pad 146 as heat-conducting cream, heat-conducting silicone grease, heat radiation oil, thus heat conduction mud etc. improve the heat transfer efficiency between heating column 134 and the described back up pad 146.In addition, described heating column 134 can be one-body molded with described back up pad 146.
Described light source assembly 150 is arranged on second bearing wall 114 of described optical engine body 110, in order to light to be provided.Light source assembly 150 general high-pressure sodium lamp or the Halogen lamp LEDs of adopting, when in use producing very large heat, therefore cooling air port is set on light source assembly 150 in order to could guarantee that by 140 pairs of light source assembly air-supplies of fan heat radiation light source assembly 150 can not damage because of overheated.
Described guide shell 160 is the tubulose of sealing around the both ends open, and it can become different shapes according to different Demand Design, adopts arc to be convenient to reduce windage in the present embodiment.Described guide shell 160 described being arranged between described fan 140 and the light source assembly 150, and comprise one first openend 162 and one second openend 164.First openend 162 of described guide shell 160 is arranged on air outlet 141 places of fan 140 and is connected with described air outlet 141, and second openend 164 aligns mutually with the cooling air port of described light source assembly 150.Dispel the heat to described light source assembly 150 in the cooling air port place that the air-flow that described guide shell 160 is produced described fan 140 is directed to described light source assembly 150.But the material plastic material or the metal material of described guide shell 160.In order to prevent guide shell 160 dislocation, can on the outside of the body of described guide shell 160, fixed block 166 be set, by described fixed block 166 with described guide shell 160 firm being fixed on the described optical engine body 110.
During use, the heat that DMD module 120 is produced conducts on shell 142, sway brace 144 and the back up pad 146 of described fan 140 by heat-conductive assembly 130.Blower fan by fan 140 makes fan 140 ambient airs quicken to flow, thereby takes away the heat that diffuses on shell 142, sway brace 144 and the back up pad 146.Simultaneously, the air-flow that is produced by fan 140 is flowed out by its air outlet 141, and guides to through guide shell 160 in the cooling air port of light source assembly 150 light source assembly 150 is dispelled the heat.Because, the thermal value of DMD module 120 is far smaller than the heat that light source assembly 150 produces, so, it is very limited causing the rising of fan 140 gas flow temperatures by the heat of DMD module 120 generations, therefore, DMD module 120 being carried out cooled air-flow still can effectively dispel the heat to light source assembly 150.The present invention is dispelled the heat by 140 pairs of DMD modules 120 of same fan and light source assembly 150, can save the radiating fin in order to DMD module 120 is dispelled the heat in the prior art, the effect of carrying out active heat removal by 140 pairs of DMD modules 120 of fan is better than adopting the effect of the passive heat radiation of radiating fin simultaneously.In addition, can improve the service efficiency of fan 140.
Be appreciated that, the structure that is arranged on the heating column 134 between described fan 140 and the DMD module 120 can be according to different demands and difference, as long as heating column 134 can effectively contact and not influence the air intake effect of fan 140 air inlet 142a with described fan 140, heating column 134 can be the lattice-shaped of annular arrangement as described.
See also Fig. 3, a kind of projector 200 that uses above-mentioned DMD radiator structure 100 that better embodiment of the present invention provides.Described projector 200 comprises a casing 210, a plurality of system fan 220 and above-mentioned DMD radiator structure 100.Described DMD radiator structure 100 is arranged on described casing 210 inside.On the sidewall of corresponding described fan 140 and light source assembly 150 on the described casing 210, be respectively arranged with first air port 212 and second air port 214.Described a plurality of system fan 220 is arranged in the described casing 210 and with second air port 214 of described casing 210 and aligns mutually.During use, air enters in the described casing 210 from first air port 212, a part is by 140 pairs of DMD modules 120 of fan and light source assembly 150 heat radiations, another part further dispels the heat to the built-in system of whole projector 200 under the effect of described system fan 220, thereby can effectively reduce the working temperature of projector 200 inside, guarantee projector's 200 operate as normal.
Be noted that above-mentioned embodiment only is better embodiment of the present invention, those skilled in the art also can do other variation in spirit of the present invention.The variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.
Claims (11)
1. DMD radiator structure, it comprises an optical engine body, a DMD module, a heat-conductive assembly, a fan, a light source assembly and a guide shell, described DMD module is arranged on the described optical engine body, described heat-conductive assembly comprises a conducting strip and a heating column, described conducting strip is fitted on the described DMD module, described heating column is pressed together on the described conducting strip, described fan is arranged on described optical engine body one side over against described DMD module, and fit with the other end of described heat-conductive assembly, described fan comprises a shell, an air inlet and an air outlet, described air inlet and described air outlet all are formed on the described shell, described air inlet runs through described shell, described air outlet axially and described air inlet axial vertical, described light source assembly is arranged on a side of contiguous described fan on the described optical engine body, described light source assembly is provided with cooling air port, described guide shell is arranged between described fan and the light source assembly, and the one end opening is positioned at the air outlet place of described fan, and other end opening is over against the cooling air port of described light source assembly.
2. DMD radiator structure as claimed in claim 1, it is characterized in that: described optical engine body comprises one first bearing wall and one second bearing wall, described first bearing wall and the described second bearing wall approximate vertical, first bearing wall has been provided with window, described DMD module is contained in the described empty window, and described light source assembly is arranged on described second bearing wall.
3. DMD radiator structure as claimed in claim 2, it is characterized in that: described fan comprises a blower fan that is arranged on the shell on described first bearing wall and is arranged on enclosure, described shell is provided with the air inlet that runs through described shell, be formed with a plurality of sway braces that radially are provided with along described air inlet at described shell around the position of described air inlet, be formed with a back up pad in the end of described sway brace, described back up pad supports the blower fan of described fan and is closely pressed together on the other end of described heating column.
4. DMD radiator structure as claimed in claim 3 is characterized in that: the air outlet of described fan is formed on the described shell, and the axis approximate vertical of the axis of described air outlet and air inlet.
5. DMD radiator structure as claimed in claim 3 is characterized in that: the shell of described fan, sway brace and back up pad all adopt thermal conductive metallic material to make.
6. DMD radiator structure as claimed in claim 3 is characterized in that: be provided with thermal interface material between described heating column and the described back up pad.
7. DMD radiator structure as claimed in claim 3 is characterized in that: described heating column and described back up pad are one-body molded.
8. DMD radiator structure as claimed in claim 1 is characterized in that: described guide shell is the tubulose of sealing around the both ends open.
9. DMD radiator structure as claimed in claim 8 is characterized in that: described guide shell is an arc.
10. DMD radiator structure as claimed in claim 8 or 9, it is characterized in that: the body arranged outside of described guide shell has fixed block, and described guide shell is fixed on the fuselage of described ray machine by described fixed block.
11. projector, it comprises a casing, a plurality of system fan, it is characterized in that: this projector also comprises DMD radiator structure as claimed in claim 1, the DMD radiator structure is arranged on described casing inside, on the sidewall of the fan of corresponding described DMD radiator structure on the described casing and light source assembly, be respectively arranged with first air port and second air port, described a plurality of system fan is arranged in the described casing and with second air port of described casing and aligns mutually, the wind that makes described system fan blow out circulates in described casing inside, to take away the heat that built-in system was produced of described projector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103029693A CN101907820B (en) | 2009-06-05 | 2009-06-05 | DMD (Digital Mirror Device) heat-radiation structure and projector applied same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103029693A CN101907820B (en) | 2009-06-05 | 2009-06-05 | DMD (Digital Mirror Device) heat-radiation structure and projector applied same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101907820A CN101907820A (en) | 2010-12-08 |
| CN101907820B true CN101907820B (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009103029693A Expired - Fee Related CN101907820B (en) | 2009-06-05 | 2009-06-05 | DMD (Digital Mirror Device) heat-radiation structure and projector applied same |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454843B (en) * | 2013-08-09 | 2016-01-27 | 苏州佳世达光电有限公司 | A kind of light source cooling device and light-source system |
| CN105519090B (en) | 2014-10-13 | 2018-06-12 | 深圳市大疆创新科技有限公司 | Image capture module |
| CN108391110A (en) * | 2018-04-28 | 2018-08-10 | 深圳暴风统帅科技有限公司 | A kind of projection device |
| CN112987463B (en) * | 2019-12-02 | 2023-03-14 | 青岛海信激光显示股份有限公司 | Optical machine and laser projection equipment |
| CN114019754A (en) * | 2021-10-29 | 2022-02-08 | 峰米(重庆)创新科技有限公司 | Projection equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000035613A (en) * | 1998-07-16 | 2000-02-02 | Seiko Epson Corp | Projection type display device |
| JP2001330818A (en) * | 2000-05-22 | 2001-11-30 | Hitachi Ltd | Electronic device |
| CN1419163A (en) * | 2001-11-14 | 2003-05-21 | 中强光电股份有限公司 | Reflection type liquid crystal imaging assembly cooling device |
| CN1449509A (en) * | 2000-08-30 | 2003-10-15 | Lg电子有限公司 | Cooling system for projector |
| EP1682819A1 (en) * | 2003-11-06 | 2006-07-26 | Koninklijke Philips Electronics N.V. | Vortex cooled lamp |
-
2009
- 2009-06-05 CN CN2009103029693A patent/CN101907820B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000035613A (en) * | 1998-07-16 | 2000-02-02 | Seiko Epson Corp | Projection type display device |
| JP2001330818A (en) * | 2000-05-22 | 2001-11-30 | Hitachi Ltd | Electronic device |
| CN1449509A (en) * | 2000-08-30 | 2003-10-15 | Lg电子有限公司 | Cooling system for projector |
| CN1419163A (en) * | 2001-11-14 | 2003-05-21 | 中强光电股份有限公司 | Reflection type liquid crystal imaging assembly cooling device |
| EP1682819A1 (en) * | 2003-11-06 | 2006-07-26 | Koninklijke Philips Electronics N.V. | Vortex cooled lamp |
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| Publication number | Publication date |
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| CN101907820A (en) | 2010-12-08 |
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Granted publication date: 20111221 Termination date: 20140605 |