WO2018049847A1 - 冷却装置及投影装置 - Google Patents
冷却装置及投影装置 Download PDFInfo
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- WO2018049847A1 WO2018049847A1 PCT/CN2017/086868 CN2017086868W WO2018049847A1 WO 2018049847 A1 WO2018049847 A1 WO 2018049847A1 CN 2017086868 W CN2017086868 W CN 2017086868W WO 2018049847 A1 WO2018049847 A1 WO 2018049847A1
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- WIPO (PCT)
- Prior art keywords
- blocking member
- light blocking
- fan
- air
- cooling device
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
Definitions
- the utility model relates to the technical field of display, in particular to a cooling device and a projection device applying the same.
- the most common way to dissipate heat is to set up a fan to force the convection of the heat source or its heat sink with the air, and bring the heat out of the system to ensure the normal operation of the projection device.
- some devices need to directly cool the illuminating heat source by using a fan.
- the existing air duct structure reduces the system impedance and ensures the heat dissipation effect, and the air duct 2 between the fan 1 and the illuminating heat source 3 is not provided with any occlusion. Or only some dust filter structure, can not block the light from the heat source to reach the fan. Because the main structure of the fan is mainly made of plastic, under the action of illumination, the aging speed of the fan will accelerate, and the probability of failure will be greatly improved.
- the main object of the present invention is to provide a cooling device, which aims to improve the light protection effect of the cooling device and prolong its service life without affecting the cooling effect of the cooling device.
- the present invention provides a cooling device for cooling a light source, including a fan and a duct system, the air duct system including a duct main body, an air inlet, an air outlet, and at least one light blocking member.
- the air inlet and the air outlet are respectively disposed at two ends of the air duct body, the fan is disposed adjacent to the air inlet, the light blocking member is disposed on an inner sidewall of the air duct body, and the The fixed end of the light blocking member is disposed at an angle to the direction of the wind flow in the air passage body toward the free end.
- the cooling device comprises a first light blocking member and a second light blocking member, wherein the first light blocking member and the second light blocking member are respectively offset from opposite inner side walls of the air passage body.
- the fixed end of the light blocking member is disposed at an acute or obtuse angle to the direction of the wind flow direction in the air passage body.
- the free end of the light blocking member is away from the fan than the fixed end.
- the angle between the first light blocking member and the second light blocking member and the inner sidewall of the air duct body is less than or equal to 55°, and the first light blocking member and the second light blocking member
- the projections on any of the side walls of the air duct body do not overlap, and the first light blocking member and the second light blocking member overlap the projection portion perpendicular to the wind flow direction.
- the fan is disposed in the air duct body, a central axis of the air inlet is perpendicular to an axis of the fan, and a central axis of the air outlet is parallel to an axis of the fan, and the fan includes An air vent, wherein a central axis of the air vent is perpendicular to an axial direction of the fan, and the air vent faces the light blocking member.
- the air duct system further includes a grid plate, and the grid plate is fixed to the air outlet.
- the inner side wall of the air duct body is a matte surface or a black anodized surface.
- the air duct body comprises a bottom plate, a side plate and a cover plate, and the bottom plate is integrally formed with the side plate, and the cover plate is fixedly connected with the side plate.
- Still another object of the present invention is to provide a projection apparatus including a light source and a cooling device, the cooling device being disposed opposite to the light source, and the cooling device being the above-described cooling device.
- the cooling device of the technical solution of the present invention includes a fan and a duct system.
- the fan is disposed at one side of the air inlet of the air duct system, and the fan can be used to suck the external cooling air into the main body of the air duct and blow it to the main body of the air duct.
- the air outlet at the other end cools the light source to achieve heat dissipation from the light source.
- the main body of the air duct can be arranged to transmit the cooling air to the light source along a certain track, thereby maximizing the effective utilization rate and cooling rate of the cooling air.
- a light blocking member is arranged on the inner side wall of the main body of the air duct, and the fixed end of the light blocking member is disposed at an angle to the air flow direction of the air duct main body toward the extending direction of the free end, so as to block the accidental entry into the air duct main body through the air outlet.
- most of the light is directed to the fan, and at the same time, the cooling air of a certain amount of air can be continuously passed, thereby avoiding the aging speed of the fan often being exposed to light, and prolonging the service life of the fan.
- the combination of the two can slow down the aging speed of the fan and prolong the service life of the cooling device without affecting the normal cooling source of the cooling device.
- FIG. 1 is a schematic structural view of a prior art air duct structure
- Figure 2 is an exploded view of an embodiment of the cooling device of the present invention
- FIG 3 is a partial structural view of the air passage body of the cooling device shown in Figure 2;
- Figure 4 is a front elevational view of Figure 3;
- FIG. 5 is a schematic structural view of an embodiment of a projection apparatus according to the present invention.
- the terms "connected”, “fixed” and the like should be understood broadly, unless otherwise clearly defined and limited.
- “fixed” may be a fixed connection, a detachable connection, or an integral; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise.
- the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
- first, second, and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
- features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
- the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.
- the utility model provides a cooling device which is applied to a projection device for cooling a light source of a projection device.
- FIG. 1 is a schematic structural view of a prior art air duct structure
- FIG. 2 is an exploded view of an embodiment of the cooling device of the present invention
- FIG. 3 is a main body of the air duct of the cooling device shown in FIG.
- FIG. 4 is a front view of FIG. 3
- FIG. 5 is a schematic structural view of an embodiment of a projection apparatus according to the present invention.
- a cooling device 100 includes a fan 10 and a duct system 30.
- the duct system 30 includes a duct body 31, an air inlet 33, an air outlet 35, and at least one light blocking device.
- the air inlet 33 and the air outlet 35 are respectively disposed at two ends of the air duct main body 31, the fan 10 is disposed adjacent to the air inlet 33, the light blocking member 37 is disposed on the inner side wall of the air duct main body 31, and the light blocking member 37 is fixed.
- the extending end of the end is disposed at an angle with the airflow direction of the airway main body 31.
- the free end is an end of the light blocking member 37 that is not connected to the inner side wall, and the fixed end is fixed by the light blocking member 37 and the inner side wall.
- One end ).
- the cooling device 100 can be applied to a projection device 200, such as a projector or an engineering machine, and can also be used for a laser television.
- the air duct body 31 includes a first end 311 and a second end 313.
- the air inlet 33 is disposed at the first end 311 and located at one side of the fan 10, and the air outlet 35 is disposed at the second end 313.
- the cooling device 100 The air outlet 35 is disposed opposite to the light source of the projection device 200.
- the fan 10 in the present technical solution may be a centrifugal fan.
- the working principle of the fan 10 is to suck air in the axial direction and exhaust air in a certain radial direction of the fan 10. This fan 10 can use a smaller volume to obtain a larger air supply amount.
- the fan 10 can also be other types of fans.
- the light blocking member 37 may be a plate-like structure.
- the cooling device 100 of the technical solution of the present invention includes a fan 10 and a duct system 30.
- the fan 10 is disposed at one side of the air inlet 33 of the air duct system 30, and the external cooling air can be sucked into the air duct main body 31 by the fan 10. And blowing to the air outlet 35 located at the second end 313 of the air duct main body 31, the light source 210 is cooled to realize heat dissipation of the light source 210.
- the arrangement of the air duct body 31 allows the cooling air to be transmitted to the light source 210 along a certain track, thereby maximizing the effective utilization rate and cooling rate of the cooling air.
- the direction of the wind flow in the duct main body 31 is blown toward the air outlet 35 by the radial direction of the fan 10, and the wind flow is restricted by the opposite inner side walls of the duct main body 31, and flows to the air outlet 35 parallel to the inner side wall.
- a light blocking member 37 is disposed on the inner side wall of the air duct main body 31, and the fixed end of the light blocking member 37 is disposed at an angle to the direction of the wind flow toward the extending direction of the free end thereof.
- the light blocking member 37 includes a windward surface (not shown) and a leeward surface (not shown).
- the windward surface is a surface of the light blocking member 37 facing the fan 10.
- the leeward surface is a surface of the light blocking member 37 facing away from the fan 10, and the light blocking member 37 is connected.
- the inner side wall is divided into a side (not shown) near the air outlet 35 and a side (not shown) away from the air outlet 35, and the angle refers to the windward side and the inner side wall away from the air outlet 35 side.
- the angle formed between the angles, or the angle between the leeward surface of the light blocking member 37 and the inner side wall near the air outlet 35, causes the maximum surface of the light blocking member 37 to intersect with the light. Therefore, it is possible to block most of the light that is incident on the fan 10 after accidentally entering the air duct main body 31 through the air outlet 35, while ensuring that a certain amount of cooling air can continue from the light blocking member 37 and the inner side wall of the light blocking member 37 is not fixed.
- the gap between the passages is passed, so that the aging speed of the fan 10 is often accelerated after being exposed to light, which prolongs the service life of the fan 10, thereby prolonging the service life of the cooling device 100.
- the combination of the two can slow down the aging speed of the fan 10 and extend the service life of the cooling device 100 without affecting the cooling device 100 to normally cool the light source 210.
- the fan 10 when the fan 10 is selected as a centrifugal fan, please continue to refer to FIG. 2, the fan 10 is disposed in the air duct main body 31, the central axis of the air inlet 33 is perpendicular to the axis of the fan 10, and the central axis of the air outlet 35 and the fan The axis of the fan 10 is parallel, and the fan 10 includes an air outlet 11, the central axis of the air outlet 11 being perpendicular to the axis of the fan 10, and the air outlet 11 facing the wind shield 37.
- the central axis of the air inlet 33 is perpendicular to the axis of the fan 10, which avoids the opening of the fan 10 in the axial direction, ensures the stability of the installation of the fan 10, and prevents dust from directly entering the axis of the fan 10.
- the air outlet 11 of the fan 10 faces the wind shield 37, so that the fan 10 discharges the sucked cooling air through the wind shield 37 to the air outlet 35 at the second end 313, and the central axis of the air outlet 35 and the fan 10
- the axial axes are arranged in parallel to prevent the light of the light source 210 from being directly directed toward the fan 10, thereby further reducing the light of the illumination fan 10 at the source to ensure the normal operation of the fan 10.
- the air inlet 33 may also be disposed on the other side of the fan 10.
- the central axis of the air outlet 35 may be perpendicular to the axis of the fan 10. .
- the air duct system 30 is provided with a first light blocking member 371 and a second light blocking member 373.
- the first light blocking member 371 and the second light blocking member 373 are respectively disposed on the wind.
- the two inner side walls of the track main body 31 (dislocation means that the projections of the first light blocking member 371 and the second light blocking member 373 and the free end of the second light blocking member 373 do not overlap).
- the first light blocking member 371 and the second light blocking member 373 may each have a rectangular parallelepiped shape, and the first light blocking member 371 is fixed to an inner side wall of the air duct main body 31, and the size of the fixed end thereof is The height of the inner side wall is uniform, and the second light blocking member 373 is fixed to the other inner side wall of the air duct main body 31. The size of the fixed end is also the same as the height of the inner side wall. The two inner side walls are oppositely disposed. Further block the light.
- the first light blocking member 371 and the second light blocking member 373 can reflect light that accidentally enters the air passage main body 31, and ensure that most of the light is blocked from being directed toward the fan 10.
- the first light blocking member 371 and the two inner side walls where the second light blocking member 373 is located are not disposed in parallel, and the light entering the air passage main body 31 can be further prevented from being incident on the fan 10 through multiple identical reflections.
- the cooling air can pass through the gap between the first light blocking member 371 and the second light blocking member 373 which are disposed offset, and does not affect the air volume of the cooling air blown to the light source 210.
- the duct system 30 may also include only one light blocking member 37 which blocks some of the light from being directed toward the fan 10 and has little effect on the amount of wind.
- the air duct system 30 additionally adds a third light blocking member that can further block light.
- the fixed end of the light blocking member 37 is disposed at an acute or obtuse angle to the direction of the wind flow direction of the air passage main body 31 toward the free end.
- the windward side of the light blocking member 37 and the side of the inner side wall adjacent to the air outlet 35 are disposed at an obtuse angle, that is, with the air duct body.
- the direction of the wind flow of the inner portion 31 is set at an obtuse angle; when the fixed end of the light blocking member 37 extends toward the air outlet 35 toward the free end thereof, the windward side of the light blocking member 37 and the side of the inner side wall adjacent to the air outlet 35 are disposed at an acute angle. That is, it is disposed at an acute angle to the direction of the wind flow in the duct main body 31.
- the light blocking member 37 When the angle is set to be vertical, the light blocking member 37 has a greater resistance to the wind or less intersecting with the light, so the angle of the structure is set to an acute angle or an obtuse angle, so that the light blocking member 37 can face the light with the largest surface. And intersecting with the light, and does not affect the passage of the cooling air, further blocking most of the light that is incident on the fan 10 after accidentally entering the air passage main body 31 through the air outlet 35, thereby further slowing down the aging speed of the fan 10, and extending the cooling device 100. The purpose of the service life.
- the free end of the light blocking member 37 is away from the fan 10 than the fixed end.
- the free end of the light blocking member 37 is farther away from the fan 10 than the fixed end, and the wind resistance to the cooling air can be further reduced, so that the cooling air can easily pass between the light blocking member 37 and the unconnected inner side wall.
- the gap ensures that the air volume of the cooling air is not affected.
- the reflection angle of the light blocking member 37 can be used to more easily block the light blocking member 37, further blocking more light, ensuring less light is directed to the fan 10, thereby preventing the fan 10 from aging and accelerating, further ensuring the fan 10 Performance of use.
- the angle between the first light blocking member 371 and the second light blocking member 373 and the inner sidewall of the air duct body 31 is less than or equal to 55°, and the first light blocking member 371 and the second light blocking member
- the projections of the 373 on either side wall of the air duct main body 31 do not overlap, and the projection portions of the first light blocking member 371 and the second light blocking member 373 on either end surface of the air duct main body 31 overlap (any end surface refers to The first end 311 faces away from the surface of the exhaust vent 11 of the fan 10, or the second end 313 faces the surface of the vent 11 of the fan 10.
- the air duct system 30 is provided with a first light blocking member 371 and a second light blocking member 373, and the first light blocking member 371 and the second light blocking member 373 respectively intersect the inner side wall of the air duct body 31.
- the angle between the leeward side of the first light blocking member 371 and the second light blocking member 373 and the inner side wall of each of the first light blocking member 373 and the second light blocking member 373 is less than or equal to 55°, so that the cooling wind is provided. The resistance received is further reduced.
- the angle between the first light blocking member 371 and the second light blocking member 373 and the inner sidewall of the air duct body 31 should not be too small, so that the projection of the two on the sidewall of the air duct body 31 can be avoided. Without overlapping, the size of the light blocking member 37 and the air duct body 31 is too large, which is disadvantageous for the lightness of the structure.
- the angle between the first light blocking member 371 and the fixed inner side wall is 45° ⁇ 10°, and the angle between the second light blocking member 373 and the fixed inner side wall is also 45° ⁇ 10.
- the projections of the first light blocking member 371 and the second light blocking member 373 on the inner side wall and perpendicular to the wind flow direction are substantially equal, so that the light blocking effect is as large as possible, and the wind resistance is as small as possible.
- the projections of the first light blocking member 371 and the second light blocking member 373 on any side wall of the air duct body 31 do not overlap, so that the first light blocking member 371 and the second light blocking member 373 can be in the air flow direction.
- the gap is large, ensuring the smooth passage of the cooling air, and further ensuring the air volume of the cooling air, so that the cooling effect on the light source 210 is good, so that the light source 210 can maintain an appropriate temperature.
- the distance between the first light blocking member 371 and the first light blocking member 373 is not too far, and is disposed in the middle of the air passage main body 31.
- the projection portion of the first light blocking member 371 and the second light blocking member 373 on either end surface of the air passage body 31 overlaps, so that the first light blocking member 371 and the second light blocking member 373 can be combined to completely block the light incident fan.
- the route of 10, so that the light is hardly directed to the fan 10, further protects the fan 10, thereby further improving the performance of the cooling device 100.
- the combination of the two can further extend the life of the cooling device 100 without affecting the cooling effect of the cooling device 100.
- the duct system 30 further includes a grid plate (not shown) that is fixed to the air outlet 35.
- a mesh plate is disposed at the air outlet 35.
- the material of the mesh plate is a light absorbing material, which can absorb, reflect or scatter light of the light source 210 that is directed to the air outlet 35, thereby reducing the actual entry into the air duct body 31. The light inside is reduced by the light directed to the fan 10, and the aging of the fan 10 is prevented from accelerating.
- the mesh plate has a porous plate-like structure, and does not increase the wind resistance of the cooling air discharge air outlet 35 while reducing the light entering the air passage main body 31, thereby not affecting the cooling function of the cooling device 100.
- the connection between the grid plate and the air outlet 35 may be a snap connection, a bolt connection, or a welding method.
- the inner side wall of the air duct main body 31 is a matte surface or a black anodized surface.
- the material of the air duct body 31 may be a metal, preferably an aluminum alloy.
- the inner side wall of the air duct main body 31 may be a matte surface, or black anodized, thereby weakening the air passage main body.
- the reflective properties of the inner side wall of the 31 such that light is not reflected to the fan 10 through the inner side wall further ensures the quality and performance of the fan 10.
- the inner side wall of the air passage main body 31 is a matte surface, and the matte surface can be formed by sandblasting or syrup treatment of the inner side wall and performing electric oxidation (anodizing).
- the inner side wall of the air passage main body 31 is a black anodized surface, and it is necessary to chemically react the air passage main body 31 with an electrolytic solution to form a surface oxide film, and then perform dyeing.
- the air duct body 31 includes a bottom plate 312 , a side plate 314 , and a cover plate 316 .
- the bottom plate 312 is integrally formed with the side plate 314
- the cover plate 316 is fixedly connected to the side plate 314 .
- the bottom plate 312, the side plate 314 and the cover plate 316 enclose a rectangular body cavity, and the fan 10 is disposed in the cavity, and the sucked cooling air is transmitted to the air outlet 35 through the cavity.
- the bottom plate 312 and the side plate 314 are integrally formed, can be produced at one time by mold forming, the process is simple, and the strength of the air passage main body 31 can be improved.
- the bottom plate 312 and the side plate 314 can also be fixedly connected by welding, screwing or snapping, and the cover plate 316 and the side plate 314 can also be fixed by screwing, snapping or other connection.
- the peripheral surface of the cover plate 316 is provided with a plurality of through holes 3161.
- the edge of the side plate 314 is fixed with a plurality of connecting ears 3141, and each connecting ear 3141 is provided with a threaded hole 3143, and the cover plate 316 and the side are provided.
- the plate 314 is threaded by the engagement of the through hole 3161 with the threaded hole 3143.
- the connection mode is firm and stable, and when the maintenance or regular maintenance is performed, the cover 316 is conveniently disassembled, so that the inner side walls of the fan 10 and the air duct main body 31 can be cleaned to prevent the fan 10 from affecting the suction and discharge due to the deposition of dust.
- the wind function ensures a good cooling performance of the cooling device 100.
- the light blocking member 37 is fixed to the inner side of the side plate 314, and the fixing manner may be welding, or the light blocking member 37 may be integrally formed with the side plate 314.
- the light blocking member 37 and the side plate 314 are integrally formed, the connection manner is firm and reliable, and the strength of the light blocking member 37 itself can be improved, thereby improving the ability of the light blocking member 37 to withstand the wind of the cooling wind.
- the bottom plate 312 is provided with a slope 315, and the slope 315 is located between the air inlet 33 and the fan 10.
- a slope 315 is disposed between the air inlet 33 and the fan 10.
- the lower end of the slope 315 is adjacent to the air inlet 33, and the upper end is close to the fan 10, and the air inlet 33 is enlarged.
- the area is convenient for the external cooling air to be drawn into the axis of the fan 10 along the slope 315, thereby improving the working efficiency of the fan 10.
- another object of the present invention is to provide a projection device 200 including a light source (not shown) and a cooling device 100.
- the air outlet 35 of the cooling device 100 is disposed opposite to the light source.
- the light source is provided.
- the color wheel 210 and excitation light (not shown)
- the color wheel 210 generates a laser beam under the excitation of the excitation light, which is a Lambertian distribution, and is partially irradiated to the cooling device 100 along the air outlet 35.
- the cooling device 100 is the above-described cooling device 100, which can block the incident laser light and prevent the cooling device 100 from being worn out, thereby prolonging its service life. Since the cooling device 100 of the projection device 200 adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are not repeated herein.
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Abstract
一种冷却装置（100）及投影装置（200），冷却装置（100）用于对光源（210）进行冷却，包括风扇（10）和风道系统（30），风道系统（30）包括风道主体（31）、进风口（33）、出风口（35）及至少一挡光件（37，371，373），进风口（33）和出风口（35）分别设置于风道主体（31）的两端，风扇（10）临近进风口（33）设置，挡光件（37，371，373）设置于风道主体（31）的内侧壁，且挡光件（37，371，373）的固定端向其自由端的延伸方向与风道主体（31）的风流方向呈夹角设置，可在不影响冷却装置（100）冷却工作的前提下，提高冷却装置（100）的光防护性能。
Description
本实用新型涉及显示技术领域，特别涉及一种冷却装置及应用所述冷却装置的投影装置。
投影装置在工作过程中，光源的能量通常只有小部分得到有效利用，转化为有用的光，其余大部分能量则转化为热量，使得投影装置越来越热，而投影机的关键元器件都有相应的温度规格要求，这就需要对投影装置进行散热。
目前，最常用的散热方式是设置风扇，使热源或其散热器与空气发生强制对流作用，将热量带出系统，以保证投影装置正常工作。其中，部分装置需要用风扇直接冷却发光热源，如图1所示，现有的风道结构为减小系统阻抗，保证散热效果，风扇1与发光热源3之间的风道2没有设置任何遮挡，或只有一些防尘过滤结构，无法阻挡发光热源的光照射到风扇。因风扇的主体结构以塑胶为主，在光照的作用下，风扇的老化速度会加速，发生故障的概率会大大提高。
本实用新型的主要目的是提供一种冷却装置，旨在不影响冷却装置冷却作用的前提下，提高冷却装置的光防护作用，延长其使用寿命。
为实现上述目的，本实用新型提出一种冷却装置，用于对光源进行冷却，包括风扇和风道系统，所述风道系统包括风道主体、进风口、出风口及至少一挡光件，
所述进风口和所述出风口分别设置于所述风道主体的两端，所述风扇临近所述进风口设置，所述挡光件设置于所述风道主体的内侧壁，且所述挡光件的固定端向其自由端的延伸方向与所述风道主体内的风流方向呈夹角设置。
优选地，所述冷却装置包括第一挡光件与第二挡光件，所述第一挡光件和所述第二挡光件分别错位设于所述风道主体相对的两内侧壁。
优选地，所述挡光件的固定端向其自由端的延伸方向与所述风道主体内的风流方向呈锐角或钝角设置。
优选地，所述挡光件的自由端相较于固定端远离所述风扇。
优选地，所述第一挡光件和所述第二挡光件与所述风道主体的内侧壁的夹角均小于或等于55°，且所述第一挡光件与第二挡光件于所述风道主体的任一侧壁上的投影不重叠，所述第一挡光件与第二挡光件垂直于风流方向上的投影部分重叠。
优选地，所述风扇设于所述风道主体内，所述进风口的中心轴线与所述风扇的轴线垂直，所述出风口的中心轴线与所述风扇的轴线平行，所述风扇包括有排风口，所述排风口的中心轴线与所述风扇的轴线方向相垂直，所述排风口面向所述挡光件。
优选地，所述风道系统还包括一网格板，所述网格板固接于所述出风口。
优选地，所述风道主体的内侧壁为亚光面或黑色阳极氧化面。
优选地，所述风道主体包括底板、侧板及盖板，所述底板与所述侧板一体成型，所述盖板与所述侧板固定连接。
本实用新型的又一目的在于提出一种投影装置，包括光源和冷却装置，所述冷却装置与所述光源相对设置，所述冷却装置为上述的冷却装置。
本实用新型技术方案的冷却装置包括风扇和风道系统，将风扇设于风道系统的进风口的一侧，可利用风扇将外部的冷却风吸入风道主体内，并吹向位于风道主体的另一端的出风口，从而对光源进行冷却，实现光源的散热。风道主体的设置，可以使冷却风沿一定的轨道传送至光源，最大程度地提高冷却风的有效利用率和冷却速度。同时，于风道主体的内侧壁上设置挡光件，且挡光件的固定端向其自由端的延伸方向与风道主体的风流方向呈夹角设置，可以阻挡通过出风口意外进入风道主体后射向风扇的绝大部分光线，同时保证一定风量的冷却风可继续通过，从而避免风扇经常受光照后老化速度加快，延长了风扇的使用寿命。两者结合，可以在不影响冷却装置正常冷却光源的情况下，减缓风扇的老化速度，延长冷却装置的使用寿命。
为了更清楚地说明本实用新型实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为现有技术的风道结构的结构示意图；
图2为本实用新型冷却装置一实施例的爆炸图；
图3为图2所示冷却装置的风道主体的部分结构示意图；
图4为图3的主视图；
图5为本实用新型投影装置一实施例的结构示意图。
附图标号说明：
| 标号 | 名称 | 标号 | 名称 |
| 1 | 风扇 | 3141 | 连接耳 |
| 2 | 风道 | 3143 | 螺纹孔 |
| 3 | 发光热源 | 315 | 斜面 |
| 100 | 冷却装置 | 316 | 盖板 |
| 10 | 风扇 | 3161 | 通孔 |
| 11 | 排风口 | 33 | 进风口 |
| 30 | 风道系统 | 35 | 出风口 |
| 31 | 风道主体 | 37 | 挡光件 |
| 311 | 第一端 | 371 | 第一挡光件 |
| 312 | 底板 | 373 | 第二 挡光件 |
| 313 | 第二端 | 200 | 投影装置 |
| 314 | 侧板 | 210 | 色轮 |
本实用新型目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。
需要说明，本实用新型实施例中所有方向性指示（诸如上、下、左、右、前、后……）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
在本实用新型中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本实用新型中的具体含义。
另外，在本实用新型中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本实用新型要求的保护范围之内。
本实用新型提出一种冷却装置，该冷却装置应用于投影装置，用于对投影装置的光源进行冷却。
参照图1至图5，图1为现有技术的风道结构的结构示意图；图2为本实用新型冷却装置一实施例的爆炸图；图3为图2所示冷却装置的风道主体的部分结构示意图；图4为图3的主视图；图5为本实用新型投影装置一实施例的结构示意图。
请结合参照图2和图5，本实用新型一实施例的冷却装置100，包括风扇10和风道系统30，风道系统30包括风道主体31、进风口33、出风口35及至少一挡光件37，进风口33和出风口35分别设置于风道主体31的两端，风扇10临近进风口33设置，挡光件37设置于风道主体31的内侧壁，且挡光件37的固定端向其自由端的延伸方向与风道主体内31的风流方向呈夹角设置（该自由端为挡光件37未与内侧壁连接的一端，固定端为挡光件37与内侧壁固接的一端）。
冷却装置100可应用于投影装置200，例如投影仪或工程机等，还可用于激光电视。本实施例中，风道主体31包括第一端311与第二端313，进风口33设于第一端311并位于风扇10的一侧，出风口35设于第二端313，冷却装置100的出风口35与投影装置200的光源相对设置。本技术方案中的风扇10可选为离心风扇，该风扇10的工作原理为于轴向方向吸风，并沿风扇10的某一径向方向排风。此风扇10可使用较小的体积，得到较大的送风量。当然，风扇10还可以为其他类型的风扇。挡光件37可为板状结构。
本实用新型技术方案的冷却装置100包括风扇10和风道系统30，将风扇10设于风道系统30的进风口33的一侧，可利用风扇10将外部的冷却风吸入风道主体31内，并吹向位于风道主体31的第二端313的出风口35，从而对光源210进行冷却，实现光源210的散热。风道主体31的设置，可以使冷却风沿一定的轨道传送至光源210，最大程度地提高冷却风的有效利用率和冷却速度。风道主体31内的风流方向为由风扇10的径向方向吹向出风口35，风流受到风道主体31两相对的内侧壁的限制，平行于内侧壁流向出风口35。
同时，于风道主体31的内侧壁上设置挡光件37，且挡光件37的固定端向其自由端的延伸方向与风流方向呈夹角设置。挡光件37包括迎风面（未标示）和背风面（未标示），迎风面为挡光件37面向风扇10的表面，背风面为挡光件37背离风扇10的表面，挡光件37连接于内侧壁，将内侧壁分为靠近出风口35的一侧（未标示）和远离出风口35的一侧（未标示），上述夹角是指迎风面与远离出风口35一侧的内侧壁之间所呈的夹角，或者该夹角为挡光件37的背风面与靠近出风口35一侧的内侧壁之间所呈的夹角，使得挡光件37的最大表面与光线相交，从而可以阻挡通过出风口35意外进入风道主体31后射向风扇10的绝大部分光线，同时保证一定风量的冷却风可继续从挡光件37与未固接该挡光件37的内侧壁之间的空隙通过，从而避免风扇10经常受光照后老化速度加快，延长了风扇10的使用寿命，进而延长了冷却装置100的使用寿命。两者结合，可以在不影响冷却装置100正常冷却光源210的情况下，减缓风扇10的老化速度，延长冷却装置100的使用寿命。
具体地，当风扇10选择为离心风扇时，请继续参阅图2，将风扇10设于风道主体31内，进风口33的中心轴线与风扇10的轴线垂直，出风口35的中心轴线与风扇10的轴线平行，风扇10包括有排风口11，排风口11的中心轴线与风扇10的轴线相垂直，排风口11面向挡风件37。
将进风口33的中心轴线与风扇10的轴线垂直设置，可避免于风扇10的轴向方向开孔，保证风扇10装设的稳定性，且避免灰尘直接进入风扇10的轴心。风扇10的排风口11面向挡风件37，使风扇10将吸进的冷却风经过挡风件37排向位于第二端313的出风口35，将出风口35的中心轴线与风扇10的轴线平行设置，可避免光源210的光线径直射向风扇10，从而进一步于源头减小照射风扇10的光线，保证风扇10的正常工作。当然，当风扇10选择为其他类型的风扇时，例如贯流风扇或轴流风扇等，进风口33还可以选择设于风扇10的其他侧，出风口35的中心轴线可与风扇10的轴线垂直。
具体地，请结合参照图2和图3，风道系统30设有第一挡光件371与第二挡光件373，第一挡光件371和第二挡光件373分别错位设于风道主体31相对的两内侧壁（错位是指第一挡光件371与第二挡光件373的起始端及自由端于内侧壁的投影均不重叠）。
本实施例中，第一挡光件371与第二挡光件373的形状可均为长方体板状，第一挡光件371固接于风道主体31的一内侧壁，其固定端的尺寸与该内侧壁的高度尺寸一致，第二挡光件373固接于风道主体31的另一内侧壁，其固定端的尺寸与该内侧壁的高度尺寸也一致，上述两个内侧壁相对设置，可进一步阻挡光线。第一挡光件371与第二挡光件373可以对意外进入风道主体31的光线进行反射，保证阻挡绝大部分的光线射向风扇10。且第一挡光件371与第二挡光件373所在的两内侧壁不平行设置，可进一步防止进入风道主体31的光线通过多次相同的反射射向风扇10。同时冷却风可于错位设置的第一挡光件371与第二挡光件373之间的空隙穿过，不会影响吹向光源210的冷却风的风量。
当然，风道系统30还可以只包含一个挡光件37，这种结构会阻挡部分光线射向风扇10，并且对风量几乎没有影响。再或者风道系统30额外增加第三挡光件，该结构可以进一步阻挡光线。
请参照图4，挡光件37的固定端向其自由端的延伸方向与风道主体内31的风流方向呈锐角或钝角设置。
本实施例中，当挡光件37的固定端向其自由端的延伸方向朝向风扇10时，挡光件37的迎风面与内侧壁靠近出风口35的一侧呈钝角设置，即与风道主体内31的风流方向呈钝角设置；当挡光件37的固定端向其自由端的延伸方向朝向出风口35时，挡光件37的迎风面与内侧壁靠近出风口35的一侧呈锐角设置，即与风道主体内31的风流方向呈锐角设置。当夹角设为垂直时，会使得挡光件37对风的阻力较大或与光线相交较少，故该结构设置夹角为锐角或钝角，使得挡光件37可以最大的表面迎向光线，与光线相交，且不影响冷却风的穿过，进一步阻挡通过出风口35意外进入风道主体31后射向风扇10的绝大部分光线，实现进一步减缓风扇10的老化速度，延长冷却装置100的使用寿命的目的。
请参照图4，挡光件37的自由端相较于固定端远离风扇10。
本实施例中，挡光件37的自由端相较于固定端远离风扇10，可进一步减小对冷却风的风阻，使冷却风较易穿过挡光件37与未连接的内侧壁之间的间隙，保证冷却风的风量不受影响。同时，可以利用挡光件37的反射角度更容易将光线阻挡于挡光件37，进一步阻挡更多的光线，保证更少的光线射向风扇10，从而防止风扇10老化加速，进一步保证风扇10的使用性能。
请继续参阅图4，第一挡光件371和第二挡光件373与风道主体31的内侧壁的夹角均小于或等于55°，且第一挡光件371与第二挡光件373于风道主体31的任一侧壁上的投影不重叠，第一挡光件371与第二挡光件373于风道主体31的任一端面上的投影部分重叠（任一端面指的是第一端311背离风扇10的排风口11的表面，或第二端313面向风扇10的排风口11的表面）。
本实施例中，风道系统30设有第一挡光件371与第二挡光件373，第一挡光件371和第二挡光件373分别与风道主体31的内侧壁的夹角均小于或等于55°，即第一挡光件371和第二挡光件373的背风面分别与各自靠近出风口35一侧的内侧壁之间的夹角小于或等于55°，使冷却风受到的阻力进一步减小。当然，第一挡光件371和第二挡光件373分别与风道主体31的内侧壁的夹角不宜过小，从而会为了避免两者于风道主体31的任一侧壁上的投影不重叠，而导致挡光件37与风道主体31的尺寸过大，不利于结构的轻便。较佳的实施例中，第一挡光件371与固接的内侧壁的夹角为45°±10°，第二挡光件373与固接的内侧壁的夹角也为45°±10°，此时，第一挡光件371与第二挡光件373在内侧壁和垂直于风流方向上的投影大致相等，从而使挡光效果尽可能大，同时风阻尽可能小。且第一挡光件371与第二挡光件373于风道主体31的任一侧壁上的投影不重叠，可使第一挡光件371与第二挡光件373在风流方向上的间隙较大，保证冷却风的顺利通过，更进一步的保证冷却风的风量，从而对光源210的冷却效果好，使光源210能保持适当的温度。当然，第一挡光件371与第一挡光件373的距离不宜太远，均设于风道主体31的中部即可。第一挡光件371与第二挡光件373于风道主体31的任一端面上的投影部分重叠，可使第一挡光件371与第二挡光件373结合，完全阻隔光线入射风扇10的路线，从而使光线几乎不会射向风扇10，更进一步的保护风扇10，从而更进一步地提高冷却装置100的使用性能。两者结合，可在不影响冷却装置100冷却作用下，更进一步延长冷却装置100的寿命。
优选地，风道系统30还包括一网格板（未图示），网格板固接于出风口35。
本实施例中，于出风口35设置网格板，网格板的材质为吸光材料，可对光源210射向出风口35的光线进行吸收、反射或散射，从而减小实际进入风道主体31内的光线，即减少了射向风扇10的光线，避免风扇10的老化加速。该网格板为具有多孔的板状结构，在减少光线进入风道主体31的同时，不增加冷却风排出出风口35的风阻，从而不影响冷却装置100的冷却功能。网格板与出风口35的连接可以是卡扣连接，也可以是螺栓连接，或者焊接等方式。
进一步地，风道主体31的内侧壁为亚光面或黑色阳极氧化面。
本实施例中，风道主体31的材质可以为金属，优选为铝合金。当一定的光线进入风道主体31内时，为减小射向风扇10的光线，可将风道主体31的内侧壁设为亚光面，或对其进行黑色阳极氧化，从而减弱风道主体31的内侧壁的反射性能，使得光线不会通过内侧壁反射到风扇10，进一步保证风扇10的质量与性能。将风道主体31的内侧壁设为亚光面，亚光面可通过对内侧壁进行喷砂或者药水处理，并经过通电氧化（阳极氧化）而形成。风道主体31的内侧壁设为黑色阳极氧化面，需要将风道主体31通过电解液进行化学反应生成表面氧化膜，再进行染色即可。
具体地，请参照图2和图3，风道主体31包括底板312、侧板314及盖板316，底板312与侧板314一体成型，盖板316与侧板314固定连接。
本实施例中，底板312、侧板314及盖板316围成一个长方体容腔，风扇10设于该容腔内，并将吸入的冷却风通过容腔传送至出风口35。底板312与侧板314为一体成型，可通过模具成型一次性生产，工艺简单，且可提高风道主体31的强度。当然，底板312与侧板314还可通过焊接、螺接或卡扣固定连接，盖板316与侧板314也可通过螺纹连接、卡扣连接或者其他连接方式固定。本实施例中，盖板316的周缘面开设有多个通孔3161，侧板314的边缘固接有多个连接耳3141，每一连接耳3141上开设有螺纹孔3143，盖板316与侧板314通过通孔3161与螺纹孔3143的配合进行螺纹固定。该连接方式牢固稳定，当进行维修或定期保养时，方便将盖板316拆开，从而可对风扇10及风道主体31的内侧壁进行清理，防止风扇10因灰尘的沉积而影响其吸排风功能，进而可保证冷却装置100的冷却性能良好。
此外，挡光件37固接于侧板314的内侧上，该固定方式可以是焊接，也可以是挡光件37与侧板314一体成型。本实施例中，挡光件37与侧板314为一体成型，该连接方式牢固可靠，且可以提高挡光件37自身的强度，从而提高挡光件37承受冷却风风力的能力。
请参照图2和图3，较为优选的实施例中，底板312设有一斜面315，斜面315位于进风口33与风扇10之间。
本实施例中，当风扇10为离心风扇10时，进风口33与风扇10之间设置有斜面315，该斜面315的较低端靠近进风口33，较高端靠近风扇10，扩大了进风口33的面积，可方便外部的冷却风沿斜面315被吸入风扇10的轴心，从而提高风扇10的工作效率。
请参照图5，本实用新型的又一目的在于提出一种投影装置200，包括光源（未图示）与冷却装置100，冷却装置100的出风口35与光源相对设置，本实施例中，光源包括色轮210与激发光（未图示），色轮210在激发光的激发下产生受激光，该受激光为朗伯分布，部分受激光沿出风口35射向冷却装置100。冷却装置100为上述的冷却装置100，可对入射的受激光进行遮挡，避免冷却装置100受到损耗，从而延长其使用寿命。由于投影装置200的冷却装置100采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
以上所述仅为本实用新型的优选实施例，并非因此限制本实用新型的专利范围，凡是在本实用新型的发明构思下，利用本实用新型说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本实用新型的专利保护范围内。
Claims (10)
1、一种冷却装置，包括风扇和风道系统，其特征在于，所述风道系统包括风道主体、进风口、出风口及至少一挡光件，
所述进风口和所述出风口分别设置于所述风道主体的两端，所述风扇临近所述进风口设置，所述挡光件设置于所述风道主体的内侧壁，且所述挡光件的固定端向其自由端的延伸方向与所述风道主体内的风流方向呈夹角设置。
2、如权利要求1所述的冷却装置，其特征在于，所述冷却装置包括第一挡光件与第二挡光件，所述第一挡光件和所述第二挡光件分别错位设于所述风道主体相对的两内侧壁。
3、如权利要求1所述的冷却装置，其特征在于，所述挡光件的固定端向其自由端的延伸方向与所述风道主体内的风流方向呈锐角或钝角设置。
4、如权利要求3所述的冷却装置，其特征在于，所述挡光件的自由端相较于固定端远离所述风扇。
5、如权利要求2所述的冷却装置，其特征在于，所述第一挡光件和第二挡光件与所述风道主体的内侧壁的夹角均小于或等于55°，所述第一挡光件与第二挡光件于所述风道主体的任一侧壁上的投影不重叠，所述第一挡光件与第二挡光件于垂直于风流方向上的投影部分重叠。
6、如权利要求1所述的冷却装置，其特征在于，所述风扇设于所述风道主体内，所述进风口的中心轴线与所述风扇的轴线垂直，所述出风口的中心轴线与所述风扇的轴线平行，所述风扇包括有排风口，所述排风口的中心轴线与所述风扇的轴线相垂直，所述排风口面向所述挡光件。
7、如权利要求1所述的冷却装置，其特征在于，所述风道系统还包括一网格板，所述网格板固接于所述出风口。
8、如权利要求1所述的冷却装置，其特征在于，所述风道主体的内侧壁为亚光面或黑色阳极氧化面。
9、如权利要求1所述的冷却装置，其特征在于，所述风道主体包括底板、侧板及盖板，所述底板与所述侧板一体成型，所述盖板与所述侧板固定连接。
10、一种投影装置，其特征在于，包括光源和冷却装置，所述冷却装置与所述光源相对设置，所述冷却装置为权利要求1至9任一所述的冷却装置。
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| CN109622677A (zh) * | 2019-01-24 | 2019-04-16 | 齐鲁理工学院 | 对流式冷却系统及应用其的热冲压装置 |
| CN111317922A (zh) * | 2020-04-03 | 2020-06-23 | 长春光机医疗仪器有限公司 | 一种光谱治疗仪、制冷系统及其多功能扰流挡罩 |
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| CN206096737U (zh) * | 2016-09-18 | 2017-04-12 | 深圳市光峰光电技术有限公司 | 冷却装置及投影装置 |
| CN207123699U (zh) * | 2017-05-24 | 2018-03-20 | 深圳市光峰光电技术有限公司 | 散热系统及投影设备 |
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| US20030076683A1 (en) * | 2001-10-18 | 2003-04-24 | Han-Chung Chang | Heat-dissipating structure for switching an air direction |
| CN101067713A (zh) * | 2006-05-02 | 2007-11-07 | 三洋电机株式会社 | 投影装置 |
| CN101349857A (zh) * | 2007-07-20 | 2009-01-21 | 青岛海信电器股份有限公司 | 散热装置及投影机散热系统 |
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| CN206096737U (zh) * | 2016-09-18 | 2017-04-12 | 深圳市光峰光电技术有限公司 | 冷却装置及投影装置 |
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| CN109622677A (zh) * | 2019-01-24 | 2019-04-16 | 齐鲁理工学院 | 对流式冷却系统及应用其的热冲压装置 |
| CN111317922A (zh) * | 2020-04-03 | 2020-06-23 | 长春光机医疗仪器有限公司 | 一种光谱治疗仪、制冷系统及其多功能扰流挡罩 |
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