CN1228682C - Radiation structure for projector - Google Patents
Radiation structure for projector Download PDFInfo
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- CN1228682C CN1228682C CN 02106226 CN02106226A CN1228682C CN 1228682 C CN1228682 C CN 1228682C CN 02106226 CN02106226 CN 02106226 CN 02106226 A CN02106226 A CN 02106226A CN 1228682 C CN1228682 C CN 1228682C
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- fan
- projector
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- air
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Abstract
The present invention relates to a radiation structure for projectors, which comprises a light source, an exhaust fan which is positioned near the light source and has an air inlet, a circuit fan which is arranged near the exhaust fan and has an air inlet, a drawing fan which has an air outlet, a guide air channel which has an inlet positioned at the air outlet of the drawing fan, and an exhaust air channel, wherein an outlet of the guide air channel extends to one side of the front end of the light source; the exhaust air channel has an inlet which is opposite to the outlet of the guide air channel and is positioned on the other side of the front end of the light source, and an outlet of the exhaust air channel extends to form branching guide channels respectively leading to and covering part of the air outlets of the exhaust fan and the circuit fan. The present invention separates an optical system and a circuit system by a separation plate in a projector shell, and uses the circuit fan for cooling the circuit system; in the optical system, part of air flow is guided by the guide air channel, blown into a lamp body, and then guided by the exhaust air channel to pass through the branching guide channels; air flow from one end outlet flows to the exhaust fan, air flow from the other end outlet flows to the circuit fan, and hot air flow is exhausted by the two fans.
Description
Technical field
The present invention relates to a kind of projector, particularly relate to a kind of radiator structure of projector.
Background technology
Along with photoelectric technology is flourish, general projection display equipment goes out high brightness and distinct image for projection on screen, so that the user to be provided comfortable appreciation effect, often uses the light source of high power bulb as projector's illuminator.Yet high power lamp is steeped oneself-meeting and is produced the problem of high temperature heat radiation, for the temperature of cooling high power bulb, though prior art with radiator fan as cooling, but because bulb temperature is too high, with rising radiator fan working temperature,, can produce noise problem as improving rotation speed of the fan or increasing fan.Therefore, how efficiently radiates heat and reduce noise has become the important topic of those skilled in the art's research and development.
See also Fig. 1, optical system for existing projector, mainly comprise an illuminator 10 and an imaging system 20, illuminator 10 produces an illuminating bundle by light source 11, this illumination beam is in lens arra 12 (lens array), and lens arra 12 is to be combined by many lenslets, can make the illuminating bundle brightness uniformity, concentrate light through an illuminating lens group 13 again, inject imaging system 20.Imaging system 20 is divided into ruddiness and other visible lights by first spectroscope 21 with illuminating bundle, ruddiness is through 21 reflections of first spectroscope, enter first catoptron 211, the light delay sheet is passed in reflection again, first lens combination 212 that LCD and polaroid etc. constitute, be incident in X-prism 24, other visible lights then directly pass first spectroscope 21, shine in second spectroscope 22, through beam split is blue light and green glow, wherein blue light is through 22 reflections of second spectroscope, pass the light delay sheet, second lens combination 221 that LCD and polaroid etc. constitute, be incident in X-prism 24, green glow then directly passes second spectroscope 22 in addition, through the 3rd catoptron 222 and the 4th catoptron 223, passes the light delay sheet, the 3rd lens combination 224 that LCD and polaroid etc. constitute, be incident in X-prism 24, at last by X-prism 24 with red bluish-green actinic light after, be incident in projection lens 25, then be projected to screen (not shown).
As shown in Figure 2, because illuminator 10 adopts high-power bulb as the projection illumination light source, except the high thermolamp bubble needs cooling of light source 11, the optical system components that light beam shone, will be because of accepting heat rising temperature, for avoiding temperatures involved optical element operating characteristic and reducing the life-span, have projector now on the casing 30 at light source 11 rears, establish the optical element of a main fan 31 with cooling imaging system 20 and illuminator 10.In addition, influence Circuits System 35 for preventing the optical system that produces high temperature, existing projector roughly isolates Circuits System 35 with a demarcation strip 36 with optical system, and by a circuit fan 37 independent cooling circuit systems 35.In addition, for fully cooling off the lampposts 112 (burner) of lamp housing 111 inner high heat, near light source 11 demarcation strip 36 is established a secondary fan 32, by Circuits System 35 inspiration part airflows, shown in the direction of arrow, by an air channel 33 guiding, by front end one side of lamp housing 111, the airflow of inspiration is blown into the inside of lamp housing 111, to cool off the lamppost 112 and the suffered radiation heat of lamp housing 111 inside surfaces of the high heat of actual generation, opposite side by lamp housing 111 front ends flows out again, is discharged outside the casing 30 by main fan 31.
Aforementioned existing projector is only discharged the heat of optical system and partial circuit system 35 outside the casing 30 by single main fan 31, makes main fan 31 bear elevated operating temperature, will reduce the life-span of fan.Though can reduce working temperature and improve radiating efficiency by increasing rotation speed of the fan and quantity.But this dual mode all can raise the cost and increase noise, and the also and then increase of the degree of difficulty of system's control, and system dependability decreases, thereby influences the quality of product.
Summary of the invention
The object of the present invention is to provide a kind of radiator structure of projector, whole fan is on average shared thermal load, improves cooling effectiveness, reduces the working temperature of main fan, prolongs fan life, promotes product quality.
The object of the present invention is achieved like this, and a kind of radiator structure of projector promptly is provided, and this projector comprises a light source, a Circuits System and an optical system, and this radiator structure comprises: an extraction fan is positioned near this light source, and contains an air intake vent; One circuit fan is located near this extraction fan, has an air intake vent, in order to cool off this Circuits System; One drawing fan has an air outlet, in order to cool off this optical system; One guiding air channel has an inlet and is positioned at this drawing fan air outlet, and an outlet extends to a side of this light source front end; And an exhaust duct, have an inlet and be positioned at the opposite side that this guiding ducting outlet relatively is positioned at the light source front end, it exports and then extends to form a difference and lead the way, respectively towards and contain the air outlet of part extraction fan and circuit fan.
Preferably, the present invention is in the casing of projector, with a dividing plate optical system and Circuits System are roughly separated, with circuit fan cooled Circuits System, the part airflow that optical system is then blown out by guiding air channel guiding drawing fan, front end one side by lamp housing, airflow is blown into the inside of lamp housing, again by the exhaust duct guiding of being located at the lamp housing opposite side, lead the way through difference, one brings out mouth flow to extraction fan, and other end outlet flow to the circuit fan, by this two fan thermal current is discharged outside the casing, with the heat of equalization of incidence lamp housing.
Description of drawings
Fig. 1 is existing projection machine optical system configuration schematic diagram;
Fig. 2 is the radiator structure synoptic diagram of existing projector;
Fig. 3 is the radiator structure arrangement plan of embodiment of the invention projector;
Fig. 4 is the radiator structure arrangement plan of another embodiment of the present invention projector.
Embodiment
Relevant the present invention is in order to reach above-mentioned purpose, and technological means that is adopted and effect thereof are lifted two preferred embodiments now, and cooperate graphic be illustrated as follows.See also Fig. 3, radiator structure for first embodiment of the invention projector, wherein, in the casing 40 of projector, mainly comprise an optical system 50 and Circuits System 60, and two systems are roughly separated with a dividing plate 401, near a side of Circuits System 60, to cool off with the circuit fan of being located on the casing 40 43, a side of optical system 50 then is provided with drawing fan 41 and extraction fan 42 in casing 40, and air channel 44,45 dispels the heat, and keeps the inner suitably working temperature of projector.
Wherein, optical system 50 comprises illuminator 51 and imaging system 52, the camera lens 521 of imaging system 52 protrudes casing 40 1 sides of projector, on near the casing the camera lens 521 40, one drawing fan, 41 suck air are set, element with cooling imaging system 52 and illuminator 51, and the casing 40 in light source 511 rears is provided with an extraction fan 42, air with cooling imaging system 52, suction is through the element of illuminator 51 and the light source 511 of high temperature, after cooling off the outside of light source 511 lamp housings 512 at last, discharge outside the casing 40.Be provided with a guiding air channel 44 in drawing fan 41 air outlets 411 in addition, the inlet 441 in guiding air channel 44, aim at and contain the air outlet 411 of part drawing fan 41,44 front ends that extend to lamp housing 512 by the air outlet 411 of drawing fan 41 in guiding air channel, a side of lamp housing 512 front ends is aimed in its outlet 442, and makes the suitably lamppost 513 of guiding lamp housing 512 inside of outlet 442.
In addition, the side that lamp housing 512 front ends are relative, other establishes an exhaust duct 45, its inlet is right after the front end of lamp housing 512, and exhaust duct 45 extends along dividing plate 401 toward the light source rear side, forms a difference at last and leads the way 452, one brings out mouthful 4521 extensions toward extraction fan 42,401 past circuit fans 43, two outlets 4521,4522 of 4522 extensions of other end outlet dividing plate are only aimed at respectively and are contained part extraction fan 42 and circuit fan 43 air intake vents 421,431, form a heat radiation and guide the air channel.
First embodiment of the invention is by the configuration in aforementioned fan and air channel, shown in the direction of arrow, by guiding the air channel part airflow that 44 guiding drawing fans 41 blow out, front end one side by lamp housing 512, airflow is blown into the inside of lamp housing 512, to cool off lamppost 513 that produces high heat and lamp housing 512 internal reflection surfaces that directly are heated, from the lamp housing 512 inner airflows that flow out, again by exhaust duct 45 guiding of being located at lamp housing 512 opposite sides, lead the way 452 through difference, one brings out mouth 4521 flow to extraction fan 42, other end outlet 4522 flow to circuit fan 43, by this two fan thermal current is discharged outside projector's casing 40, not only make the heat in this two fans equalization of incidence lamp housing 512, and it is too high to prevent to bear extraction fan 42 working temperatures of optical system thermal load.Because drawing fan 41 not only effectively cools off optical system by casing 40 outer directly inspirations near the air of natural temperature, more can improve light source 511 inner cooling effectiveness in addition; In addition, because the sectional area that guiding air channel 44 and exhaust duct 45 are shared, the fraction row who all only accounts for drawing fan 41, exhaust duct 42 and circuit fan 43 inhales area, original heat radiation load there is not too much influence, therefore this each fan still can keep the function of most of original cooling, and can keep the inner suitably working temperature of projector.
As shown in table 1, it is for the comparison that improves the fore-and-aft survey data of first embodiment of the invention, use the 130W bulb to be testing standard with lighting source 511, actual measurement fan outlet temperature, the outlet temperature of improving front exhaust fan 42 is about 85 ℃, and the outlet temperature of circuit fan 43 is about 55 ℃, after the improvement then the outlet temperature of extraction fan 42 be reduced to 70 ℃ approximately, reduce 15 ℃, the outlet temperature of circuit fan 43 is increased to 65 ℃ approximately, increases by 10 ℃.Therefore, keeping under the inner suitably working temperature of projector, make circuit fan 43 share the portion temperature load, make the temperature load of extraction fan 42 reduce to specified operating range (about below 90 ℃), though and circuit fan 43 rising temperature loads, but still in the regulation operating temperature range (about below 70 ℃), and the life-span that can improve extraction fan, and avoid increasing fan noise.
As shown in Figure 4, be second embodiment of the invention, similar first embodiment of basic structure, also be in the casing 40 of projector, to comprise an optical system 50 and Circuits System 60, and with a dividing plate 401 two systems are roughly separated, near a side of Circuits System 60, cool off with the circuit fan of being located on the casing 40 43, one side of optical system 50 then is provided with drawing fan 41A and extraction fan 42, and dispels the heat in air channel 44,45.Main difference is the drawing fan 41A of second embodiment, it is the airflow of suction cooling imaging system 52, guide through air outlet 411A by guiding air channel 44, front end one side by lamp housing 512, airflow is blown into the inside of lamp housing 512, cool off, exhaust duct 45 by lamp housing 512 opposite sides guides again, lead the way 452 through difference, one brings out mouth 4521 flow to extraction fan 42, other end outlet 4522 flow to circuit fan 43, makes the heat in this two fans equalization of incidence lamp housing 512, prevents that extraction fan 42 working temperatures are too high.Therefore drawing fan 41A suction air flow impels the cooling effectiveness of imaging system 52 to improve, and the attainable cost invention makes whole fan mean heat flux, to improve the purpose of fan life.
Table 1
| Projector's lighting source: 130w bulb | |||
| Before the improvement | After the improvement | The increase and decrease temperature | |
| Extraction fan | 80℃ | 70℃ | -15℃ |
| The circuit fan | 55℃ | 65℃ | +10℃ |
In like manner, the fan running of integrated planning of the present invention projector, average fan thermal load, wherein imaging system 52 is not limited to address in the description of Related Art existing penetration liquid crystal system, also has in the radiator structure of similar light source applicable to reflection type liquid crystal system or digital micro-mirror chip system etc.; In addition,, on average share the air channel structure technology of each fan rotor load, also can suitably each fan be arranged at each face of projector based on the present invention though the fan of the embodiment of the invention all is located at casing 40 sides.
Above-described, only be that scope of the present invention is not limited to this preferred embodiment, and is all by any change that the present invention did, and not breaking away under the spirit of the present invention, all belongs to the protection domain of claim of the present invention in order to convenient explanation preferred embodiment of the present invention.
Claims (8)
1. the radiator structure of a projector, this projector comprises a light source, a Circuits System and an optical system, this radiator structure comprises:
One extraction fan is positioned near this light source, and contains an air intake vent;
One circuit fan is located near this extraction fan, has an air intake vent, in order to cool off this Circuits System;
One drawing fan has an air outlet, in order to cool off this optical system;
One guiding air channel has an inlet and is positioned at this drawing fan air outlet, and an outlet extends to a side of this light source front end; And
One exhaust duct has an inlet and is positioned at the opposite side that relative this guiding ducting outlet is positioned at the light source front end, and its outlet then extends to form a difference and leads the way, and leads to and contain the air outlet of part extraction fan and circuit fan respectively.
2. the radiator structure of projector as claimed in claim 1, wherein this extraction fan is positioned at the rear of light source.
3. the radiator structure of projector as claimed in claim 1, wherein this projector also comprises an imaging system, drawing fan is in order to the cooling imaging system.
4. the radiator structure of projector as claimed in claim 3, wherein this drawing fan is by the outside suck air of projector, and the inlet in guiding air channel is contained the air outlet of part drawing fan.
5. the radiator structure of projector as claimed in claim 3, wherein this drawing fan is by the imaging system suck air, and the inlet in guiding air channel is contained the air outlet of drawing fan.
6. the radiator structure of projector as claimed in claim 1, wherein this light source has a lamp housing, establishes a lamppost in the lamp housing.
7. the radiator structure of projector as claimed in claim 6, wherein the outlet direct airflow in this guiding air channel is blown in the lamp housing.
8. the radiator structure of projector as claimed in claim 1, wherein this projector separates the isolated area that optical system forms this Circuits System with a dividing plate, in order to isolate with this optical system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02106226 CN1228682C (en) | 2002-04-05 | 2002-04-05 | Radiation structure for projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02106226 CN1228682C (en) | 2002-04-05 | 2002-04-05 | Radiation structure for projector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1450402A CN1450402A (en) | 2003-10-22 |
| CN1228682C true CN1228682C (en) | 2005-11-23 |
Family
ID=28680188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02106226 Expired - Fee Related CN1228682C (en) | 2002-04-05 | 2002-04-05 | Radiation structure for projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1228682C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308321B (en) * | 2007-05-16 | 2010-06-09 | 佳能株式会社 | Cooling device and image projection apparatus having the same |
| CN101598891B (en) * | 2009-06-25 | 2011-08-03 | 苏州佳世达光电有限公司 | Projector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4096896B2 (en) * | 2004-03-10 | 2008-06-04 | セイコーエプソン株式会社 | projector |
| CN100395657C (en) * | 2004-11-24 | 2008-06-18 | 普立尔科技股份有限公司 | Projector with light emitting diode as light source |
| CN101354522B (en) * | 2007-07-23 | 2010-09-29 | 中强光电股份有限公司 | Projection device |
| CN101737754B (en) * | 2008-11-10 | 2011-11-09 | 鸿富锦精密工业（深圳）有限公司 | Projector |
| TWI386751B (en) * | 2008-11-21 | 2013-02-21 | Hon Hai Prec Ind Co Ltd | Light source module and projector using same |
| CN101923274A (en) * | 2010-02-28 | 2010-12-22 | 苏州佳世达光电有限公司 | Light-emitting diode light source type projector device |
| US8469521B2 (en) * | 2010-06-22 | 2013-06-25 | Seiko Epson Corporation | Projector |
| CN102073205A (en) * | 2010-11-26 | 2011-05-25 | 苏州佳世达光电有限公司 | Heat radiation structure and projector thereof |
| CN103984396A (en) * | 2014-03-21 | 2014-08-13 | 苏州佳世达光电有限公司 | Electronic device |
| CN104238246A (en) * | 2014-07-23 | 2014-12-24 | 苏州佳世达光电有限公司 | Projector |
| CN110566841B (en) * | 2018-06-05 | 2022-03-29 | 深圳市绎立锐光科技开发有限公司 | Heat radiation structure and lighting device |
| CN114995031B (en) * | 2022-05-19 | 2024-01-23 | 深圳市和天创科技有限公司 | Airtight ray apparatus of singlechip with high heat dispersion |
-
2002
- 2002-04-05 CN CN 02106226 patent/CN1228682C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308321B (en) * | 2007-05-16 | 2010-06-09 | 佳能株式会社 | Cooling device and image projection apparatus having the same |
| CN101598891B (en) * | 2009-06-25 | 2011-08-03 | 苏州佳世达光电有限公司 | Projector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1450402A (en) | 2003-10-22 |
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Legal Events
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| ASS | Succession or assignment of patent right |
Owner name: AIXIN TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHONGQIANG PHOTOELECTRIC CO LTD Effective date: 20120214 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120214 Address after: Delaware Patentee after: Suzhou Canyu Optics Co., Ltd. Address before: Hsinchu Science Park, Taiwan, China Patentee before: Zhongqiang Photoelectric Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051123 Termination date: 20130405 |