CN102109746B - Projector - Google Patents
Projector Download PDFInfo
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- CN102109746B CN102109746B CN 201110052393 CN201110052393A CN102109746B CN 102109746 B CN102109746 B CN 102109746B CN 201110052393 CN201110052393 CN 201110052393 CN 201110052393 A CN201110052393 A CN 201110052393A CN 102109746 B CN102109746 B CN 102109746B
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- air outlet
- sidewall
- projector
- air
- area
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Abstract
The invention discloses a projector. The projector comprises a case, an optical system and a circuit system; the case is provided with a first side wall, a second side wall, a third side wall and a fourth side wall; the projector also comprises a clapboard, a first air inlet, a second air inlet, a first air outlet, a first fan, and a pore opening structure; the clapboard divides the case into a first area and a second area; the optical system is positioned in the first area and the circuit system is positioned in the second area; the first air inlet is formed on the fourth side wall and is positioned in the second area; the second air inlet is formed on the second side wall; the first air outlet is positioned at the connection part of the third side wall and the fourth wall, the first air inlet and the first air outlet form a first flow channel, and the second air inlet and the first air outlet form a second flow channel; the first fan is positioned in the second area, is arranged close to the first air outlet and is used for discharging a first air flow and a second air flow out of the case from the first flow channel and the second flow channel through the first air outlet to cool the circuit system; and the pore opening structure is positioned on the third side wall and is arranged far away from the first air outlet. The projector can achieve the effect of reducing noise.
Description
Technical field
The present invention relates in particular to a kind of projector that reduces noise about a kind of projector.
Background technology
Along with photoelectric technology is flourish, general projector goes out high brightness and distinct image for projection on screen, so that the user to be provided comfortable appreciation effect; The normal light source that uses the high power bulb as projector's lamp source module; 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, as rotation speed of the fan is provided or increases fan, then can produce noise problem.At present, in the prior art, the method that projector reduces noise is for reducing rotation speed of the fan, paste the elasticity sound-proof material with vibration damping etc., but these otherwise can't satisfy the needs of heat radiation, or can increase cost.Therefore, how efficiently radiates heat reduces noise, has become the important topic of those skilled in the art's research and development.
Therefore, the present invention proposes a kind of projector, to solve the variety of problems that is met with in the prior art.
Summary of the invention
Therefore, one of the object of the invention is to provide a kind of projector, through changing flow field kenel and projector's openings in enclosure rate, to reach the effect of noise abatement.
For reaching above-mentioned purpose; The present invention provides a kind of projector; Comprise casing, optical system and Circuits System, this casing have relative the first side wall and the 3rd sidewall, with this first side wall and adjacent second sidewall and the 4th sidewall of the 3rd sidewall, this second sidewall is relative with the 4th sidewall; This optical system is closed on this first side wall setting, and this Circuits System is closed on the 3rd sidewall setting.This projector also comprises dividing plate, first air intake vent, second air intake vent, first air outlet, first fan and open-celled structure.Dividing plate is divided into first area and second area with this casing, and this optical system is positioned at this first area, and this Circuits System is positioned at this second area; First air intake vent is arranged at the 4th sidewall, and is positioned at this second area; Second air intake vent is arranged at this second sidewall; First air outlet is positioned at the junction of the 3rd sidewall and the 4th sidewall, and this first air intake vent and this first air outlet form first flow, and this second air intake vent and this first air outlet form second runner; First fan is positioned at this second area; And close on this first air outlet setting; To discharge outside this casing from this first flow and this second runner respectively with second air-flow from this second air intake vent from first air-flow of this first air intake vent in order to see through this first air outlet, this second air-flow is in order to cool off this Circuits System; Open-celled structure is positioned at the 3rd sidewall, and avoids this first air outlet setting.
As optional technical scheme, also comprise ignition device, be positioned at this second area, this first air-flow is in order to cool off this ignition device.
As optional technical scheme, this dividing plate comprises first barricade and second barricade.First barricade is in order to separate this ignition device and this optical system; Parallel this first side wall of second barricade is provided with, and in order to separating this optical system and this Circuits System, and this first barricade is connected with this second barricade.
As optional technical scheme, this second barricade is the porous barricade.
As optional technical scheme, this projector also comprises second air outlet, and this second air outlet is positioned at the junction of this first side wall and the 4th sidewall.
As optional technical scheme, this projector also comprises second fan, and this second fan is towards this second air outlet, in order to cool off this optical system.
As optional technical scheme, this open-celled structure is the porous barricade.
As optional technical scheme, the percentage of open area of this casing is greater than 5%.
As optional technical scheme; This first air outlet comprises the 3rd air outlet and the 4th air outlet; The 3rd air outlet is positioned on the 3rd sidewall; The 4th air outlet is positioned on the 4th sidewall, and this first air intake vent and this first flow of the 4th air outlet formation, and this second air outlet and the 3rd air outlet form this second runner.
As optional technical scheme, this first fan and the 3rd sidewall and the folded angle of the 4th sidewall are acute angle.
Compared with prior art, projector of the present invention changes the flow field kenel through the dual channel design, and combines the design of the open-celled structure of projector's casing, thereby constrains the sympathetic response effect, reaches the effect of noise abatement.
Can graphicly further be understood by following detailed Description Of The Invention and appended about advantage of the present invention and spirit.
Description of drawings
Shown in Figure 1 is synoptic diagram according to projector of the present invention.
Embodiment
See also Fig. 1, shown in Figure 1 is synoptic diagram according to projector of the present invention, and the present invention provides a kind of projector 1; Comprise casing 2, optical system and Circuits System 4; Casing 2 has relative the first side wall 21 and the 3rd sidewall 23, second sidewall 22 adjacent with the first side wall 21 and the 3rd sidewall 23 is relative with the 4th sidewall 24 with the 4th sidewall 24, the second sidewalls 22, and optical system is closed on the first side wall 21 settings; Circuits System 4 is closed on the 3rd sidewall 22 and is provided with.Projector 1 also comprises dividing plate, first air intake vent 6, second air intake vent 7, first air outlet 8, first fan 9 and open-celled structure 10.Dividing plate is divided into first area 51 and second area 52 with casing 2, and optical system is positioned at first area 51, and Circuits System 4 is positioned at second area 52.Wherein optical system includes lamp source module 3, camera lens 13 and light engine 15.In this embodiment, the pointolite of lamp source module 3 can be the light source of any pattern, and for example high-pressure halogen lamp, high tension mercuric bulb or light-emittingdiode do not have specific restriction.Wherein, camera lens 13 stretches out outside the first side wall 21 of casing 2; Light engine 15 comprises many group polarization, beam split and filter elements, produces projected picture in order to handle the light that lamp source module 3 sent.For example; Light engine 15 possibly comprise penetrate through type liquid crystal display board, reflective numerical digit optical processor, numerical digit microreflection mirror element (Digital Micro-mirror Device; DMD), silicon substrate liquid crystal display cells, polarization splitting prism (Polarization Beam Splitters; PBS), (Band Pass Filter BPF), element such as UV-IR filter, looks closely actual demand and decides BPF..
First air intake vent 6 is arranged at the 4th sidewall 24, and is positioned at second area 52; Second air intake vent 7 is arranged at second sidewall 22.First air outlet 8 is positioned at the junction of the 3rd sidewall 23 and the 4th sidewall 24, and wherein first air intake vent 6 and first air outlet 8 form first flow, and second air intake vent 7 and first air outlet 8 form second runner.First fan 9 is positioned at second area 52; And close on the setting of first air outlet 8; To discharge outside the casing 2 from the first flow and second runner respectively from the first air-flow F1 of first air intake vent 6 and the second air-flow F2 from second air intake vent 7 in order to see through first air outlet 8, wherein the second air-flow F2 is in order to cooling circuit system 4.
And in this embodiment, projector 1 also comprises ignition device 11, is positioned at second area 52, and closes on 24 settings of the 4th sidewall, and this first air-flow F1 is in order to cooling ignition device 11.Dividing plate comprises first barricade 53 and second barricade 54.First barricade 53 is in order to separate ignition device 11 and optical system; Second barricade, 54 parallel the first side walls 21 are provided with, and in order to separation optical system and Circuits System 4, and first barricade 53 is connected with second barricade 54.Wherein, second barricade 54 for example is the porous barricade.
In addition; In this embodiment; First air outlet 8 comprises that the 3rd air outlet 81 and the 4th air outlet 82, the three air outlets 81 are positioned on the 3rd sidewall 23, and the 4th air outlet 82 is positioned on the 4th sidewall 24; And first air intake vent 6 and the 4th air outlet 82 form first flow, and second air outlet 7 and the 3rd air outlet 81 form second runner.And preferably; First fan 9 and the 3rd sidewall 23 and the 4th sidewall 24 folded angles are acute angle; First fan 9 like this can be simultaneously towards the 3rd air outlet 81 and the 4th air outlet 82; Thereby will discharge outside the casing 2 cooling circuit system 4 and ignition device 11 from second air-flow F2 of second air intake vent 7 and the first air-flow F1 of first air intake vent 6.
In addition, projector 1 comprises that also second air outlet, 12, the second air outlets 12 are positioned at the junction of the first side wall 21 and the 4th sidewall 24.And projector 1 also comprises second fan, 14, the second fans 14 towards second air outlet 12, in order to the cooling optical system.
Wherein, first fan 9 and second fan 14 for example are aerofoil fan.
Open-celled structure 10 is positioned at the 3rd sidewall 23, and avoids 8 settings of first air outlet, and the 3rd sidewall promptly can be regarded as the bonnet of projector 1 in this embodiment.Wherein, open-celled structure 10 for example is the porous barricade.As shown in table 1, shown in the table 1 bonnet promptly on the 3rd sidewall 23 perforate to the influence of system impedance.
Table 1
| System impedance decay (%) | System noise mean value (dB) | |
| The 3rd sidewall does not have perforate | 0 | 30.26 |
| The 3rd side-wall hole | 5％ | 29.12 |
We can draw from table 1: during the whole perforate of bonnet, and system impedance decay 5%, noise reduces 1.14dB.And in general, empirical value is for decaying 36% when impedance, and system noise reduces 1.1dB approximately.So it is real in causing noise to reduce main cause obviously to draw bonnet perforate resonator effect, is the effect that reduces sympathetic response so noise reduces most of.And other experiment showed, if the flow field forms a rectangularl runner, and perforate on the sidewall of casing when total percentage of open area of casing surpasses 5%, can be constrained the sympathetic response effect, makes noise reduce.
Compared with prior art; Projector of the present invention changes the flow field kenel through the dual channel design; For example be added to the oblique placement of air port and fan; Make the present invention except the first flow of the existing Circuits System of flowing through, also increased by second runner of the ignition device of flowing through, make the cavity sympathetic response little than a runner.And the design of combination open-celled structure, thereby constrain the sympathetic response effect, reach the effect of noise abatement.
Above-described, be merely in order to convenient explanation preferred embodiment of the present invention, 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.
Claims (10)
1. projector; Comprise casing, optical system and Circuits System; This casing have relative the first side wall and the 3rd sidewall, with this first side wall and adjacent second sidewall and the 4th sidewall of the 3rd sidewall, this second sidewall is relative with the 4th sidewall, this optical system is closed on this first side wall setting; This Circuits System is closed on the 3rd sidewall setting, it is characterized in that this projector comprises:
Dividing plate is divided into first area and second area with this casing, and this optical system is positioned at this first area, and this Circuits System is positioned at this second area;
First air intake vent is arranged at the 4th sidewall, and is positioned at this second area;
Second air intake vent is arranged at this second sidewall;
First air outlet is positioned at the junction of the 3rd sidewall and the 4th sidewall, and this first air intake vent and this first air outlet form first flow, and this second air intake vent and this first air outlet form second runner;
First fan; Be positioned at this second area; And close on this first air outlet setting; To discharge outside this casing from this first flow and this second runner respectively with second air-flow from this second air intake vent from first air-flow of this first air intake vent in order to see through this first air outlet, this second air-flow is in order to cool off this Circuits System; And
Open-celled structure is positioned at the 3rd sidewall, and avoids this first air outlet setting.
2. projector as claimed in claim 1 is characterized in that also comprising ignition device, is positioned at this second area, and this first air-flow is in order to cool off this ignition device.
3. projector as claimed in claim 2 is characterized in that this dividing plate comprises:
First barricade is in order to separate this ignition device and this optical system; And
Second barricade, parallel this first side wall is provided with, and in order to separating this optical system and this Circuits System, and this first barricade is connected with this second barricade.
4. projector as claimed in claim 3 is characterized in that this second barricade is the porous barricade.
5. projector as claimed in claim 1 is characterized in that this projector also comprises second air outlet, and this second air outlet is positioned at the junction of this first side wall and the 4th sidewall.
6. projector as claimed in claim 5 is characterized in that this projector also comprises second fan, and this second fan is towards this second air outlet, in order to cool off this optical system.
7. projector as claimed in claim 1 is characterized in that this open-celled structure is the porous barricade.
8. projector as claimed in claim 1, the percentage of open area of this open-celled structure that it is characterized in that this casing is greater than 5%.
9. projector as claimed in claim 1; It is characterized in that this first air outlet comprises the 3rd air outlet and the 4th air outlet; The 3rd air outlet is positioned on the 3rd sidewall; The 4th air outlet is positioned on the 4th sidewall, and this first air intake vent and this first flow of the 4th air outlet formation, and this second air outlet and the 3rd air outlet form this second runner.
10. projector as claimed in claim 9 is characterized in that this first fan and the 3rd sidewall and the folded angle of the 4th sidewall are acute angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110052393 CN102109746B (en) | 2011-03-04 | 2011-03-04 | Projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110052393 CN102109746B (en) | 2011-03-04 | 2011-03-04 | Projector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102109746A CN102109746A (en) | 2011-06-29 |
| CN102109746B true CN102109746B (en) | 2012-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110052393 Expired - Fee Related CN102109746B (en) | 2011-03-04 | 2011-03-04 | Projector |
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| Country | Link |
|---|---|
| CN (1) | CN102109746B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499909B (en) * | 2013-09-25 | 2015-06-10 | 苏州佳世达光电有限公司 | Projection device |
| JP6507560B2 (en) * | 2014-10-21 | 2019-05-08 | セイコーエプソン株式会社 | projector |
| CN108317357A (en) * | 2017-12-31 | 2018-07-24 | 广东创捷智能科技有限公司 | A kind of adjust automatically platform for DLP projector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078866A (en) * | 2006-05-23 | 2007-11-28 | 台达电子工业股份有限公司 | Solar cell panel projecting apparatus |
| CN101644881A (en) * | 2009-09-03 | 2010-02-10 | 苏州佳世达光电有限公司 | Projector |
| CN101726980A (en) * | 2008-10-30 | 2010-06-09 | 鸿富锦精密工业（深圳）有限公司 | Projector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW514350U (en) * | 2001-06-22 | 2002-12-11 | Coretronic Corp | Projecting device with heat-dissipating fan |
-
2011
- 2011-03-04 CN CN 201110052393 patent/CN102109746B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078866A (en) * | 2006-05-23 | 2007-11-28 | 台达电子工业股份有限公司 | Solar cell panel projecting apparatus |
| CN101726980A (en) * | 2008-10-30 | 2010-06-09 | 鸿富锦精密工业（深圳）有限公司 | Projector |
| CN101644881A (en) * | 2009-09-03 | 2010-02-10 | 苏州佳世达光电有限公司 | Projector |
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|---|---|
| CN102109746A (en) | 2011-06-29 |
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Granted publication date: 20120815 Termination date: 20160304 |
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| CF01 | Termination of patent right due to non-payment of annual fee |