CN203882079U - Multi-DMD heat radiation system and projector - Google Patents
Multi-DMD heat radiation system and projector Download PDFInfo
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- CN203882079U CN203882079U CN201420198058.7U CN201420198058U CN203882079U CN 203882079 U CN203882079 U CN 203882079U CN 201420198058 U CN201420198058 U CN 201420198058U CN 203882079 U CN203882079 U CN 203882079U
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- 230000005855 radiation Effects 0.000 title abstract description 11
- 238000001816 cooling Methods 0.000 claims description 76
- 230000017525 heat dissipation Effects 0.000 claims description 49
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000036961 partial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses a multi-DMD heat radiation system and a projector. The multi-DMD heat radiation system a heat radiation channel, a fan and multiple DMDs, wherein the heat radiation channel includes an air inlet and an air outlet; the fan is arranged at the air inlet, and blows air from the air inlet to the air outlet via the heat radiation channel; and the multiple DMDs are successively arranged in the heat radiation channel along the air flowing direction. Gaps, through which air can directly flow instead of passing the DMDs, respectively exist between the inner wall of the heat radiation channel and all the DMDs except the one which is nearest to the air outlet. The multi-DMD heat radiation system and the projector are low in cost, small in size and simple in control manner.
Description
Technical field
The utility model relates to projector's technical field, more particularly, relates to a kind of many DMD cooling system and projector.
Background technology
The important numbers optical devices of digital micro-mirror device (digital mirror device is called for short DMD) for using in projector at present, thus it comes reflection ray to form picture by ten hundreds of small controlled eyeglasses.
The light that in projector, light source sends is radiated at and on DMD, can makes the temperature of DMD increase, and the upper integrated a large amount of control circuit of DMD also can produce sizable heat when work simultaneously, thereby causes DMD working temperature to raise.Too high working temperature can make reduce the serviceable life of DMD, even may cause DMD to damage.Therefore, cooling system need to be set DMD is carried out to radiating and cooling, reduce the working temperature of DMD, to guarantee in the working temperature of DMD in setting, to guarantee its performance and serviceable life.
Continuous lifting along with user demand, for high performance novel projector, a plurality of DMD need to be set, and cooling system to many DMD, after each DMD radiating and cooling, also need to make them to there is identical or close working temperature, realize the Homogeneouslly-radiating of a plurality of DMD, identical to guarantee the serviceability of each DMD, so that the stable work in work of projector.
When a plurality of DMD are carried out to radiating and cooling, prior art is that the fan of setting respectively different capacity according to the difference of each DMD thermal value dispels the heat, so that each DMD has identical or close working temperature after radiating and cooling, realize the Homogeneouslly-radiating of a plurality of DMD.As shown in Figure 1, for the projector with DMD1 and DMD2, according to prior art, need to be provided for respectively to the fan 1 of DMD1 heat radiation and for the fan 2 to DMD2 heat radiation, by controlling the power of described fan 1 and fan 2, make two DMD after radiating and cooling, there is identical or close working temperature, basically identical to guarantee its stable performance and serviceable life.
Although prior art can solve the heat dissipation problem of many DMD cooling system, realize the Homogeneouslly-radiating of a plurality of DMD.But, on the one hand, be a fan of each DMD configuration, cost is higher, and has increased the spatial volume of system; On the other hand, when a plurality of DMD working temperatures are incomplete same, comparatively complicated for the control mode of fan power.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of many DMD cooling system and projector, and described many DMD cooling system can be realized the Homogeneouslly-radiating of a plurality of DMD.
The technical solution of the utility model is: a kind of many DMD cooling system, and this many DMD cooling system comprises: the heat dissipation channel with air intake opening and gas outlet;
Be arranged on the fan at described air intake opening place, described fan blows to described gas outlet by described heat dissipation channel by described air intake opening by air;
Be arranged in described heat dissipation channel, and a plurality of DMD that are arranged in order on air-flow direction;
Wherein, except with the nearest DMD in gas outlet, between other DMD and the inwall of described heat dissipation channel, have that air is avoided DMD and the gap directly flow through.
Preferably, the DMD that thermal value is larger is the closer to described air inlet.
Preferably, the DMD that thermal value is less is the closer to described air inlet.
Preferably, the quantity of described DMD is more than or equal to 3, less the closer to DMD and the gap between heat dissipation channel inwall of air inlet.
Preferably, the quantity of described DMD is more than or equal to 3, larger the closer to DMD and the gap between heat dissipation channel inwall of air inlet.
Preferably, the quantity of described DMD is 2, and described heat dissipation channel comprises: first's passage, second portion passage and connect described first passage and the center-aisle of described second portion passage; Wherein, on air-flow direction, the cross section of described first passage is constant, and the cross section of described center-aisle reduces gradually, and the cross section of described second portion passage is constant; Described DMD is separately positioned in first's passage and second portion passage.
Preferably, the quantity of described DMD is 2, and described heat dissipation channel comprises: first's passage, second portion passage and connect described first passage and the center-aisle of described second portion passage; Wherein, on air-flow direction, the cross section of described first passage increases gradually, and the cross section of described center-aisle reduces gradually, and the cross section of described second portion passage is constant; Described DMD is separately positioned in first's passage and second portion passage.
Preferably, the quantity of described DMD is 2, and described heat dissipation channel comprises: first's passage and second portion passage; Wherein, on air-flow direction, the cross section of described first passage reduces gradually, and the cross section of described second portion passage is constant; Described DMD is separately positioned in first's passage and second portion passage.
Preferably, in above-mentioned many DMD cooling system, on air-flow direction, the cross section of described heat dissipation channel is constant, and described cross section equals the maximum cross-section of described DMD in the direction vertical with described air-flow direction.
The utility model also provides a kind of projector, and described projector comprises: above-mentioned many DMD cooling system described in any.
Many DMD cooling system provided by the utility model, only need a radiator fan, except with the nearest DMD in gas outlet, between other DMD and the inwall of described heat dissipation channel, have that air is avoided DMD and the gap directly flow through, by controlling the size in described gap, can control the air mass flow of each DMD that flows through, and then control the cooling extent of corresponding DMD, make them after radiating and cooling, there is identical or close working temperature, realize the Homogeneouslly-radiating of many DMD, so that the display performance of projector is stable, a plurality of DMD also have basically identical serviceable life.Visible, described many DMD cooling system only adopts a fan can realize the Homogeneouslly-radiating of a plurality of DMD, therefore, described many DMD cooling system and to have projector's cost of described many DMD cooling system low, volume is little, and control mode is simple.
Accompanying drawing explanation
Fig. 1 is the structural representation of traditional many DMD cooling system;
Fig. 2 is the schematic diagram of the radiating and cooling of many DMD cooling system described in the utility model;
Fig. 3 is the structural representation of many DMD cooling system embodiment mono-described in the utility model;
Fig. 4 is the structural representation of many DMD cooling system embodiment bis-described in the utility model;
Fig. 5 is the structural representation of many DMD cooling system embodiment tri-described in the utility model;
Fig. 6 is the structural representation of many DMD cooling system embodiment tetra-described in the utility model;
Fig. 7 is the structural representation of many DMD cooling system embodiment five described in the utility model;
Fig. 8 is the structural representation of many DMD cooling system embodiment six described in the utility model;
Fig. 9 is the structural representation of an embodiment of projector described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the technical scheme in the utility model embodiment is clearly and completely described.
The utility model provides a kind of many DMD cooling system, and this many DMD cooling system comprises: the heat dissipation channel with air intake opening and gas outlet; Be arranged on the fan at described air intake opening place, described fan blows to described gas outlet by described heat dissipation channel by described air intake opening by air; Be arranged in described heat dissipation channel, and a plurality of DMD that are arranged in order on air-flow direction; Wherein, except with the nearest DMD in gas outlet, between other DMD and the inwall of described heat dissipation channel, have that air is avoided DMD and the gap directly flow through.
The radiating and cooling principle of many DMD cooling system described in the utility model as shown in Figure 2, to any DMD in heat dissipation channel 5, can be controlled its cooling extent by controlling the size of the gap M between itself and heat dissipation channel 5 inwalls.Adopt a fan of setting operating power, the ventilation of air intake opening is definite value, and when gap, M is less, air capacity by gap M is just fewer, and the air capacity of it being dispelled the heat through this DMD is more, and the cooling extent of this DMD is larger, when gap infinite approach is zero, cooling extent is maximum; When gap M is larger, just more by the air capacity of gap M, the air capacity of it being dispelled the heat through this DMD is fewer, and the cooling extent of this DMD is less.
Therefore, can make to there is identical or close working temperature after each DMD radiating and cooling by controlling the cooling extent of each DMD of clearance control between each DMD and heat dissipation channel inwall, realize the Homogeneouslly-radiating of a plurality of DMD.Between the nearest DMD in gas outlet and described heat dissipation channel inwall, gap is not set, this is because limited through the air temperature rise of upstream DMD under normal circumstances, still, lower than the working temperature of the DMD nearest from gas outlet, allow all air all it be dispelled the heat, improve cooling effectiveness.
In sum, because described many DMD cooling system only adopts a fan, cost is lower, and small volume only needs a fan to control simultaneously, and control mode is simple.
In many DMD cooling system described in the utility model, DMD that thermal value is larger can be set the closer to described air inlet, or the less DMD of thermal value is the closer to described air inlet, the cross section of the heat dissipation channel of these two kinds of design proposals all can be designed as and increases progressively or width successively decreases, and is convenient to the design of heat-dissipating channel structure.
In many DMD cooling system described in the utility model, when the quantity of described DMD is more than or equal to 3, can arrange the closer to DMD and the gap between heat dissipation channel inwall of air intake opening littlely, also can arrange the closer to DMD and the gap between heat dissipation channel inwall of air intake opening larger.These two kinds of design proposals can make cross section Stepwize Shrink or the expansion of heat dissipation channel by regulating the cross section of heat dissipation channel inwall to regulate the size in gap between each DMD and heat dissipation channel inwall, easily design processing.
In described many DMD cooling system, the apparent size of each DMD is identical, so the maximum cross-section of each DMD on air-flow direction is all identical, when difference is DMD work, thermal value is different.
Embodiment mono-as many DMD cooling system described in the utility model, as shown in Figure 3, the quantity of described DMD is 2, and the heat dissipation channel 5 of described many DMD cooling system comprises: first's passage 51, second portion passage 53 and the center-aisle 52 that connects described first passage 51 and described second portion passage 53.Wherein, on air-flow direction, the cross section of described first passage 51 is constant, and the cross section of described center-aisle 52 reduces gradually, the cross section of described second portion passage 53 is constant, and described DMD is separately positioned in first's passage 51 and second portion passage 53.To being positioned at the DMD6 of first's passage 51, its upstream air is that partial action carries out radiating and cooling on DMD6, after last air acts on the DMD7 nearest with gas outlet completely, flows out gas outlet, and the power of fan 31 immobilizes.
In the present embodiment, the DMD that thermal value is large can be arranged on the position near air intake opening, also can be arranged on the position near gas outlet, according to actual heating situation, the power of setting fan 31, the gap length of then debugging between DMD and heat dissipation channel 5 inwalls is just passable.
In the present embodiment, DMD6 only has between a side and the inwall of first's passage 51 and has gap.Embodiment bis-that can certainly be as shown in Figure 4, two sides that DMD6 is set all have gap between the inwall relative with described first passage 51.
Embodiment tri-as many DMD cooling system described in the utility model, as shown in Figure 5, the quantity of described DMD is 2, and the heat dissipation channel 5 of described many DMD cooling system comprises: first's passage 54, second portion passage 56 and the center-aisle 55 that connects described first passage 54 and described second portion passage 56.Wherein, on air-flow direction, the cross section of described first passage 54 increases gradually, and the cross section of described center-aisle 55 reduces gradually, the cross section of described second portion passage 56 is constant, and described DMD is separately positioned in first's passage 54 and second portion passage 56.
To being positioned at the DMD6 of first's passage 54, same, its upstream air is that partial action carries out radiating and cooling on DMD6, after last air acts on the DMD7 nearest with gas outlet completely, flows out gas outlet.
As the embodiment tetra-of many DMD cooling system described in the utility model, as shown in Figure 6, the quantity of described DMD is 2, and the heat dissipation channel 5 of described many DMD cooling system comprises: first's passage 57 and second portion passage 58.Wherein, on air-flow direction, the cross section of described first passage 57 reduces gradually, and the cross section of described second portion passage 58 is constant, and DMD is separately positioned in described first passage 57 and second portion passage 58.To being positioned at the DMD6 of first's passage 57, same, its upstream air is that partial action carries out radiating and cooling on DMD6, after last air acts on the DMD7 nearest with gas outlet completely, flows out gas outlet.
In the present embodiment, to be arranged in first's passage 57 DMD6 its be two relative sides in direction that air-flow direction is vertical, between side and the inwall of first's passage 57, have the gap reducing gradually, another side is fitted on the inwall of first's passage 57 completely.
Shown in Fig. 7 is embodiment five, and embodiment tetra-differences are only that two sides of DMD6 all and between the inwall of described first passage 57 have the gap reducing gradually.
As the embodiment six of many DMD cooling system described in the utility model, as shown in Figure 8, on air-flow direction, the cross section that heat dissipation channel 5 is set is constant, and described cross section equals the maximum cross-section of described DMD in the direction vertical with described air-flow direction.The gap between all DMD and the inwall of described heat dissipation channel 5 be zero or convergence be zero, to being positioned at any DMD6 of heat dissipation channel 5, its upstream air is to act on DMD6, to carry out radiating and cooling completely, after last air acts on the DMD7 nearest with gas outlet completely, flow out gas outlet, the power of fan 31 immobilizes.Adopting the gap between each DMD of this kind of embodiment and heat dissipation channel 5 inwalls is to be all zero, and all air are by each DMD, it to be dispelled the heat completely, and radiating efficiency is very fast.This embodiment goes for all DMD situation that thermal value reduces gradually on air-flow direction.
It should be noted that, in the present embodiment, the cross section of described heat dissipation channel all refers to the section perpendicular to described air-flow direction.
The technical scheme that the utility model is above-mentioned, can, so that the working temperature maximum of any two DMD after radiating and cooling is not more than 3 ℃, so that the working temperature of all DMD after radiating and cooling is identical or close, realize Homogeneouslly-radiating.
As the embodiment mono-of projector described in the utility model, with reference to figure 9, described projector comprises: many DMD cooling system C, light source B and camera lens A.Described in the present embodiment, projector can process (DLP, Digital Light Processing) projector for digital light.
Fig. 9 illustrated embodiment only be take the projector with the cooling system of many DMD shown in Fig. 3 and is described as example, and many DMD cooling system C of projector can be the many DMD cooling system described in any embodiment in above-described embodiment described in the present embodiment.
Many DMD cooling system described in the present embodiment described in projector's employing above-described embodiment, can guarantee that each DMD has identical or close working temperature, and cost is low when guaranteeing each DMD radiating and cooling, and volume is little, and control mode is simple.
It should be noted that, in this application, it is only a kind of embodiment that the mode that linear pattern arranges be take in the axis of heat dissipation channel shown in Fig. 2 to Fig. 8, in other embodiments, the trend of the axis of heat dissipation channel can be specifically set according to projector's interior layout, and the trend of heat dissipation channel and the flow direction of air are not limited to mode shown in accompanying drawing; In addition, in figure, only show the DMD nearest with gas outlet and any DMD that is arranged in heat dissipation channel, and not shown whole DMD, do not limit the number of DMD in described many DMD cooling system.
In this article, the relational terms such as the first and second grades is only used for an entity or operation to make a distinction with another entity, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.
Although described spirit of the present utility model and principle with reference to some embodiments, but should be appreciated that, the utility model is not limited to disclosed embodiment, the division of each side is not meant that to the feature in these aspects can not combine to be benefited yet, and this division is only the convenience in order to explain.The utility model is intended to contain interior included various modifications and the equivalent arrangements of spirit and scope of claims.The scope of claims meets the most wide in range explanation, thereby comprises all such modifications and equivalent structure and function.
Claims (10)
1. the cooling system of DMD more than, is characterized in that, comprising:
The heat dissipation channel with air intake opening and gas outlet;
Be arranged on the fan at described air intake opening place, described fan blows to described gas outlet by described heat dissipation channel by described air intake opening by air;
Be arranged in described heat dissipation channel, and a plurality of DMD that are arranged in order on air-flow direction;
Wherein, except with the nearest DMD in gas outlet, between other DMD and the inwall of described heat dissipation channel, have that air is avoided DMD and the gap directly flow through.
2. many DMD cooling system according to claim 1, is characterized in that, the larger DMD of thermal value is the closer to described air inlet.
3. many DMD cooling system according to claim 1, is characterized in that, the less DMD of thermal value is the closer to described air inlet.
4. many DMD cooling system according to claim 1, is characterized in that, the quantity of described DMD is more than or equal to 3, less the closer to DMD and the gap between heat dissipation channel inwall of air inlet.
5. many DMD cooling system according to claim 1, is characterized in that, the quantity of described DMD is more than or equal to 3, larger the closer to DMD and the gap between heat dissipation channel inwall of air inlet.
6. many DMD cooling system according to claim 1, it is characterized in that, the quantity of described DMD is 2, and described heat dissipation channel comprises: first's passage, second portion passage and connect described first passage and the center-aisle of described second portion passage; Wherein, on air-flow direction, the cross section of described first passage is constant, and the cross section of described center-aisle reduces gradually, and the cross section of described second portion passage is constant; Described DMD is separately positioned in first's passage and second portion passage.
7. many DMD cooling system according to claim 1, it is characterized in that, the quantity of described DMD is 2, and described heat dissipation channel comprises: first's passage, second portion passage and connect described first passage and the center-aisle of described second portion passage; Wherein, on air-flow direction, the cross section of described first passage increases gradually, and the cross section of described center-aisle reduces gradually, and the cross section of described second portion passage is constant; Described DMD is separately positioned in first's passage and second portion passage.
8. many DMD cooling system according to claim 1, is characterized in that, the quantity of described DMD is 2, and described heat dissipation channel comprises: first's passage and second portion passage; Wherein, on air-flow direction, the cross section of described first passage reduces gradually, and the cross section of described second portion passage is constant; Described DMD is separately positioned in first's passage and second portion passage.
9. many DMD cooling system according to claim 1, is characterized in that, on air-flow direction, the cross section of described heat dissipation channel is constant, and described cross section equals the maximum cross-section of described DMD in the direction vertical with described air-flow direction.
10.Yi Zhong projector, is characterized in that, described projector comprises: the many DMD cooling system as described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198058.7U CN203882079U (en) | 2014-04-22 | 2014-04-22 | Multi-DMD heat radiation system and projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198058.7U CN203882079U (en) | 2014-04-22 | 2014-04-22 | Multi-DMD heat radiation system and projector |
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| Publication Number | Publication Date |
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| CN203882079U true CN203882079U (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420198058.7U Expired - Lifetime CN203882079U (en) | 2014-04-22 | 2014-04-22 | Multi-DMD heat radiation system and projector |
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| CN (1) | CN203882079U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305310A (en) * | 2016-04-25 | 2017-10-31 | 深圳市光峰光电技术有限公司 | A kind of projector equipment and optical projection system |
| CN107750115A (en) * | 2017-11-13 | 2018-03-02 | 珠海格力电器股份有限公司 | Electric control cabinet |
| CN107765496A (en) * | 2016-08-23 | 2018-03-06 | 株式会社理光 | Light supply apparatus, image projection device, the method to set up of light supply apparatus |
| CN111610685A (en) * | 2019-02-26 | 2020-09-01 | 中强光电股份有限公司 | Light source heat dissipation device and projector |
-
2014
- 2014-04-22 CN CN201420198058.7U patent/CN203882079U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305310A (en) * | 2016-04-25 | 2017-10-31 | 深圳市光峰光电技术有限公司 | A kind of projector equipment and optical projection system |
| WO2018032859A1 (en) * | 2016-04-25 | 2018-02-22 | 深圳市光峰光电技术有限公司 | Projection apparatus and projection system |
| CN107305310B (en) * | 2016-04-25 | 2021-04-30 | 深圳光峰科技股份有限公司 | Projection equipment and projection system |
| CN107765496A (en) * | 2016-08-23 | 2018-03-06 | 株式会社理光 | Light supply apparatus, image projection device, the method to set up of light supply apparatus |
| CN107750115A (en) * | 2017-11-13 | 2018-03-02 | 珠海格力电器股份有限公司 | Electric control cabinet |
| CN107750115B (en) * | 2017-11-13 | 2023-10-10 | 珠海格力电器股份有限公司 | Electric control Cabinet (Cabinet) |
| CN111610685A (en) * | 2019-02-26 | 2020-09-01 | 中强光电股份有限公司 | Light source heat dissipation device and projector |
| US11340519B2 (en) | 2019-02-26 | 2022-05-24 | Coretronic Corporation | Light source heat-dissipating device and projection apparatus |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20171030 Address after: 518055 Guangdong city of Shenzhen province Nanshan District Xi Li Light Road No. 1089 Shenzhen integrated circuit design and application of Industrial Park Building 4 Patentee after: APPOTRONICS Corp.,Ltd. Address before: 518055 Guangdong city of Shenzhen province Nanshan District Xi Li Light Road No. 1089 Shenzhen integrated circuit design and application of Industrial Park Building 4 Patentee before: YLX Inc. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 20-22, 20-22 headquarters building, 63 high tech Zone, Xuefu Road, Nanshan District, Guangdong Province, Guangdong. Patentee after: APPOTRONICS Corp.,Ltd. Address before: 518000 Nanshan District, Shenzhen, Guangdong, Guangdong Province, Guangdong Road, 63 Xuefu Road, high-tech zone, 21 headquarters building, 22 floor. Patentee before: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. Address after: 518000 Nanshan District, Shenzhen, Guangdong, Guangdong Province, Guangdong Road, 63 Xuefu Road, high-tech zone, 21 headquarters building, 22 floor. Patentee after: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. Address before: 518055 Shenzhen, Shenzhen, Guangdong 1089 Nanshan District road 1089, Shenzhen integrated circuit design application Industrial Park, 4 floor. Patentee before: APPOTRONICS Corp.,Ltd. |
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| CX01 | Expiry of patent term | ||
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Granted publication date: 20141015 |