Projection device and projector

Abstract

The utility model relates to the technical field of projectors, and discloses a projection device and a projector, and the projection device comprises an optical housing, an optical assembly and a water cooling structure. The optical assembly is arranged on the optical machine shell and comprises a digital micro-mirror device and a prism module, and the prism module is located on the side, corresponding to the reflecting face, of the digital micro-mirror device. The water cooling structure is arranged on the optical module shell and comprises a first water cooling chamber and a second water cooling chamber, the first water cooling chamber is located on the first side of the optical module, and the second water cooling chamber is located on the second side of the optical module. Through the arrangement, the environment temperature in the optical machine shell can be effectively reduced, the situation that a large amount of heat is accumulated in the optical machine shell to generate high temperature is avoided, and the heat dissipation effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of projectors, in particular to a projection device and a projector. Background Art

[0002] In the projection device of a DLP (Digital Light Processing) projector, the high-brightness light generated by the light source enters the optical housing, is processed by optical components such as prisms and digital micromirror devices, and then propagates to the lens, which then projects the light onto the screen to form an image.

[0003] During the operation of the projection device, as light is continuously projected into the interior of the optical housing, a thermal effect will be generated during the propagation and projection of light inside the optical housing, causing a large amount of heat to accumulate inside the optical housing, thereby causing the ambient temperature inside the optical housing to rise. Most conventional projection devices use a fan or a combination of a fan and a heat sink to dissipate heat from the optical housing to reduce the ambient temperature inside the optical housing. However, for a high-brightness projection device, the heat generated during operation is also greater, and the effect of heat dissipation using a fan or a combination of a fan and a heat sink is poor, making it difficult to meet the operating temperature requirements of the projection device. Utility Model Content

[0004] The embodiments of the utility model aim to provide a projection device and a projector to solve the technical problem that the heat dissipation effect of the projection device in the prior art is poor.

[0005] On the one hand, an embodiment of the utility model provides a projection device, the projection device comprising:

[0006] Optical housing;

[0007] An optical component is arranged in the optical housing, and the optical component includes a digital micromirror device and a prism module, wherein the prism module is located on a side corresponding to the reflective surface of the digital micromirror device;

[0008] The water cooling structure is arranged in the optical housing, and comprises a first water cooling chamber and a second water cooling chamber. The first water cooling chamber is located at the first side of the optical component, and the second water cooling chamber is located at the second side of the optical component.

[0009] In some embodiments, the first water cooling chamber is located in the emission direction of the non-imaging light reflected by the reflective surface.

[0010] In some embodiments, the second water cooling chamber is located on a side of the prism module facing away from the digital micromirror device;

[0011] The second water cooling chamber is provided with a light opening, and the light opening is used for allowing the imaging light reflected by the reflecting surface to pass through.

[0012] In some embodiments, the water cooling structure further includes a third water cooling chamber, and the third water cooling chamber is disposed on a third side of the optical component.

[0013] In some embodiments, the first water cooling chamber and the third water cooling chamber are respectively disposed on two adjacent side walls of the optical housing, and two adjacent sides of the second water cooling chamber are respectively connected to the two adjacent side walls.

[0014] In some embodiments, the first water-cooling chamber, the second water-cooling chamber, and the third water-cooling chamber are connected.

[0015] In some embodiments, the second water-cooling chamber includes a first sub-water-cooling chamber and a second sub-water-cooling chamber separated from each other;

[0016] The third water-cooling chamber includes a third sub-water-cooling chamber and a fourth sub-water-cooling chamber separated from each other;

[0017] The first sub-water cooling chamber is connected to the third sub-water cooling chamber and the first water cooling chamber, and the second sub-water cooling chamber is connected to the fourth sub-water cooling chamber and the first water cooling chamber.

[0018] In some embodiments, the projection device further includes a heat dissipation component, which is disposed on a non-optical surface of the prism module.

[0019] In some embodiments, the heat dissipation assembly includes a first heat dissipation member, a second heat dissipation member, and a third heat dissipation member, and the first heat dissipation member, the second heat dissipation member, and the third heat dissipation member are respectively attached to three non-optical surfaces of the prism module.

[0020] On the other hand, an embodiment of the present invention further provides a projector, which includes the projection device as described above.

[0021] Compared with the prior art, when the projection device of the embodiment of the utility model is working and generating a thermal effect, the first water cooling chamber can absorb and take away the heat inside the optical housing from the first side, and the second water cooling chamber can absorb and take away the heat inside the optical housing from the second side, so that the inside of the optical housing can be cooled by the two water cooling chambers in different directions and positions, thereby effectively reducing the ambient temperature inside the optical housing and avoiding the high temperature generated by the accumulation of a large amount of heat inside the optical housing. Compared with the traditional solution of using a fan or a fan combined with a heat sink to cool the optical housing, the projection device provided by the embodiment of the utility model has a better heat dissipation effect, meets the working temperature requirements of the optical component, helps to maintain the stability of the optical performance of the optical group, and allows the projection device to output light with higher brightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or several embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0023] Figure 1 is a three-dimensional diagram of a projection device provided by one embodiment of the utility model;

[0024] Figure 2 yes Figure 1 Another perspective view of the projection device shown;

[0025] Figure 3 yes Figure 2 An exploded view of the projection device shown;

[0026] Figure 4 yes Figure 3 A schematic diagram of a partial structure of a projection device shown;

[0027] Figure 5 yes Figure 3 A top view of a partial structure of the projection device shown;

[0028] Figure 6 yes Figure 5 A three-dimensional cross-sectional view of a portion of the optical housing along the AA direction;

[0029] Figure 7 yes Figure 3 An exploded view of a portion of the structure of the projection device shown;

[0030] Figure 8 yes Figure 3 A three-dimensional diagram of a partial structure of the projection device shown;

[0031] Fig. 9 yes Figure 8 An exploded view of a portion of the structure of the projection device shown. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on another element, or there can be one or more centered elements therebetween. The terms "upper", "lower", "left", "right", "upper end", "lower end", "top" and "bottom" used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention.

[0034] See also Figures 1 to 4 , Figure 1 is a three-dimensional diagram of a projection device 100 provided in one embodiment of the present invention. Figure 2 yes Figure 1 Another perspective view of the projection device 100 is shown. Figure 3 yes Figure 2 The exploded view of the projection device 100 shown in FIG. Figure 4 yes Figure 3 The schematic diagram of a partial structure of the projection device 100 is shown. The embodiment of the utility model provides a projection device 100 , which includes an optical housing 10 , an optical component 20 and a water cooling structure 30 .

[0035] The optical component 20 is disposed in the optical housing 10 . The optical component 20 includes a digital micromirror device 21 and a prism module 22 . The prism module 22 is located at a side corresponding to the reflective surface 211 of the digital micromirror device 21 .

[0036] After the light emitted by the light source enters the optical housing 10 , the light is processed by the prism module 22 and projected onto the reflection surface 211 of the digital micromirror device 21 , and the reflection surface 211 reflects the incident light.

[0037] The water cooling structure 30 includes a first water cooling chamber 31 and a second water cooling chamber 32 . The first water cooling chamber 31 is located at a first side of the optical component 20 , and the second water cooling chamber 32 is located at a second side of the optical component 20 .

[0038] Among them, the first side is one of the upper side, lower side, left side, right side, front side and rear side of the optical component 20, the first side is another of the upper side, lower side, left side, right side, front side and rear side of the optical component 20, and the first side and the second side are different sides of the optical component 20.

[0039] In the embodiment of the utility model, when the projection device 100 is working and generating a thermal effect, the first water cooling chamber 31 can absorb and take away the heat inside the optical housing 10 from the first side, and the second water cooling chamber 32 can absorb and take away the heat inside the optical housing 10 from the second side, so that the inside of the optical housing 10 can be cooled by the two water cooling chambers in different directions and positions, thereby effectively reducing the ambient temperature inside the optical housing 10 and avoiding the high temperature generated by the accumulation of a large amount of heat inside the optical housing 10. Compared with the traditional solution of using a fan or a fan combined with a heat sink to dissipate heat from the optical housing, the projection device 100 provided by the embodiment of the utility model has a better heat dissipation effect, meets the operating temperature requirements of the optical component 20, helps to maintain the stability of the optical performance of the optical component 20, and allows the projection device 100 to output light with higher brightness.

[0040] In some embodiments, Figures 1 to 3 As shown, the optical housing 10 includes a main housing 11 and a side panel 12. The main housing 11 is provided with a receiving cavity 101, a first opening 102 and a second opening 103, the first opening 102 and the second opening 103 are respectively located at two ends of the main housing 11, and the first opening 102 and the second opening 103 are both connected to the receiving cavity 101. The side panel 12 is installed at the first opening 102 of the main housing 11 and covers the first opening 102. The side panel 12 is provided with a third opening 104 and a fourth opening 105, and the third opening 104 and the fourth opening 105 are both connected to the receiving cavity 101.

[0041] The digital micromirror device 21 is disposed on the side of the side plate 12 facing away from the main housing 11, and the digital micromirror device 21 is directly opposite to the third opening 104, and the reflective surface 211 of the digital micromirror device 21 faces the accommodating cavity 101. The prism module 22 is accommodated in the accommodating cavity 101, and light propagates between the digital micromirror device 21 and the prism module 22 through the third opening 104.

[0042] In some other embodiments, the third opening 104 may be omitted, and the digital micromirror device 21 is received in the accommodating cavity 101 .

[0043] In this embodiment, when the projection device 100 is working, the light emitted by the light source passes through the fourth opening 105 and enters the accommodating cavity 101. The light is then processed by the prism module 22 and passes through the third opening 104 and is projected onto the reflective surface 211 of the digital micromirror device 21. The reflective surface 211 reflects the incident light. The reflective surface 211 allows the light to pass through the third opening 104 and the second opening 103 in sequence and be projected out of the optical housing 10. The reflective surface 211 can also allow the light to pass through the third opening 103 and be projected into the interior of the optical housing 10.

[0044] The digital micromirror device 21 includes a plurality of micromirrors arranged in a matrix, and the plurality of micromirrors are arranged to form a reflective surface 211 of the digital micromirror device 21, and the reflective surface 211 is used to reflect incident light, and each micromirror can switch between a first angle and a second angle and reflect the incident light. Figure 4 As shown, the micromirror is in an "on" state at a first angle, and the micromirror can reflect the incident light to the imaging light path to form an imaging light L1, and the imaging light L1 can be projected to the screen through the lens to form an image; the micromirror is in an "off" state when it is at a second angle, and the micromirror can reflect the incident light to the non-imaging light path to form a non-imaging light L2, and the non-imaging light L2 is projected into the optical housing 10, and the non-imaging light L2 does not participate in the image projection of the lens.

[0045] When the non-imaging light reflected by the reflective surface 211 is projected to the corresponding position inside the optical housing 10, the position will generate high heat, which may easily cause the ambient temperature inside the optical housing 10 to rise. In order to better dissipate heat inside the optical housing 10, in some embodiments, the first water cooling chamber 31 is located in the emission direction of the non-imaging light L2 reflected by the reflective surface 211, that is, when the micromirror of the digital micromirror device 21 is in the "off" state, it reflects the non-imaging light L2 toward the first water cooling chamber 31, so that the non-imaging light L2 can be projected on the first water cooling chamber 31, or on a structure that is attached to or spaced from the first water cooling chamber 31 (for example, the first heat sink 41 described below). In this way, the first water cooling chamber 31 corresponds to the position where the non-imaging light L2 is projected, so that the first water cooling chamber 31 can dissipate heat at a position with higher heat, thereby improving the heat dissipation effect of the first water cooling chamber 31 on the inside of the optical housing 10.

[0046] Specifically, Figure 3 and Figure 4 Taking the illustrated position as an example, the first water cooling chamber 31 is located on the right side of the optical component 20 , and the non-imaging light L2 reflected by the reflective surface 211 is emitted to the right at a certain inclination angle relative to the digital micromirror device 21 .

[0047] It can be understood that the position of the first water-cooling chamber 31 relative to the optical component 20 can be set according to the emission direction of the non-imaging light L2. For example, when the non-imaging light L2 is emitted downward at a certain inclination angle relative to the digital micromirror device 21, the first water-cooling chamber 31 can be set on the lower side of the optical component 20, so that the first water-cooling chamber 31 can correspond to the position where the non-imaging light L2 is projected.

[0048] In some embodiments, the second water cooling chamber 32 is located on the side facing the reflective surface, and when the micromirror of the digital micromirror device 21 is in the "on" state, it reflects the imaging light L1 toward the second water cooling chamber 32. The second water cooling chamber 32 is provided with a light opening 3201, and the light opening 3201 is used for the imaging light L1 reflected by the reflective surface 211 to pass through. While the second water cooling chamber 32 realizes the heat dissipation effect on the inside of the optical housing 10, it can also avoid blocking the imaging light reflected by the micromirror of the digital micromirror device 21.

[0049] The reflective surface 211 faces the third opening 104 and the light opening 3201 , and the reflective surface 211 , the third opening 104 and the light opening 3201 are located on the same straight line.

[0050] Specifically, Figure 3 and Figure 4 Taking the illustrated position as an example, the second water cooling chamber 32 is located at the front side of the optical component 20 , and the imaging light L1 reflected by the reflective surface 211 is emitted forward.

[0051] It is understandable that the position of the second water cooling chamber 32 relative to the optical component 20 can be set according to actual needs. For example, the second water cooling chamber 32 can be set at the rear side of the optical component 20.

[0052] In some embodiments, the water cooling structure 30 further includes a third water cooling chamber 33, which is disposed on a third side of the optical assembly 20, so that the first water cooling chamber 31, the second water cooling chamber 32, and the third water cooling chamber 33 are respectively located on three different sides of the optical assembly 20. When the projection device 100 is working and generates a thermal effect, the third water cooling chamber 33 can absorb and take away the heat inside the optical housing 10 from the third side, so that the inside of the optical housing 10 can be cooled by the three water cooling chambers at different positions and directions, thereby improving the heat dissipation efficiency.

[0053] The third side is another side of the upper side, the lower side, the left side, the right side, the front side and the rear side of the optical component 20, and the first side is different from the second side and the third side.

[0054] Specifically, Figure 3 and Figure 4 Taking the illustrated position as an example, the third water cooling chamber 33 is located on the upper side of the optical component 20 .

[0055] It is understandable that the position of the third water cooling chamber 33 relative to the optical component 20 can be set according to actual needs. For example, the third water cooling chamber 33 can be set at the lower side of the optical component 20 .

[0056] In some embodiments, the first water cooling chamber 31 and the third water cooling chamber 33 are respectively arranged on adjacent side walls of the optical housing 10, and the adjacent sides of the second water cooling chamber 32 are respectively connected to the adjacent side walls. In this way, the first water cooling chamber 31, the second water cooling chamber 32 and the third water cooling chamber 33 are adjacent to each other and surround the optical component 20 from three different directions, so that the heat dissipation of the environment where the optical component 20 is located can be concentrated near the optical component 20, thereby improving the heat dissipation efficiency.

[0057] Optionally, the first water cooling chamber 31 , the second water cooling chamber 32 and the third water cooling chamber 33 are arranged perpendicular to each other.

[0058] See also Figure 5 and Figure 6 , Figure 5 yes Figure 3 The top view of a part of the structure of the projection device 100 is shown. Figure 6 yes Figure 5 The three-dimensional cross-sectional view of a partial structure of the optical housing 10 shown is along the AA direction. In some embodiments, the first water-cooling chamber 31, the second water-cooling chamber 32 and the third water-cooling chamber 33 are connected, so that the first water-cooling chamber 31, the second water-cooling chamber 32 and the third water-cooling chamber 33 can share the same liquid cooling system. Only one liquid cooling system is needed to circulate cooling liquid to the first water-cooling chamber 31, the second water-cooling chamber 32 and the third water-cooling chamber 33, thereby reducing the water pipe design and simplifying the structure.

[0059] In some embodiments, the second water-cooling chamber 32 includes a first sub-water-cooling chamber 321 and a second sub-water-cooling chamber 322 separated from each other, and the third water-cooling chamber 33 includes a third sub-water-cooling chamber 331 and a fourth sub-water-cooling chamber 332 separated from each other. The first sub-water-cooling chamber 321 is connected to the third sub-water-cooling chamber 331 and the first water-cooling chamber 31, and the second sub-water-cooling chamber 322 is connected to the fourth sub-water-cooling chamber 332 and the first water-cooling chamber 31, so that the first water-cooling chamber 31, the second water-cooling chamber 32 and the third water-cooling chamber 33 are connected, so that the third sub-water-cooling chamber 331, the first sub-water-cooling chamber 321, the first water-cooling chamber 31, the second sub-water-cooling chamber 322 and the fourth sub-water-cooling chamber 332 are connected in sequence, and the coolant can flow from the third sub-water-cooling chamber 331 through the first sub-water-cooling chamber 321, the first water-cooling chamber 31, the second sub-water-cooling chamber 322 and the fourth sub-water-cooling chamber 332 in sequence.

[0060] Of course, the coolant may also start from the fourth sub-water cooling chamber 332 and flow through the second sub-water cooling chamber 322 , the first water cooling chamber 31 , the first sub-water cooling chamber 321 and the third sub-water cooling chamber 331 in sequence.

[0061] The first water cooling chamber 31, the second water cooling chamber 32 and the third water cooling chamber 33 can be formed together with the optical housing 10 on the optical housing 10. Through holes are provided between the first sub-water cooling chamber 321 and the third sub-water cooling chamber 331, between the first sub-water cooling chamber 321 and the first water cooling chamber 31, and between the first water cooling chamber 31 and the fourth sub-water cooling chamber 332 to achieve communication between the first sub-water cooling chamber 321 and the third sub-water cooling chamber 331, between the first sub-water cooling chamber 321 and the first water cooling chamber 31, and between the first water cooling chamber 31 and the fourth sub-water cooling chamber 332.

[0062] Please also read Figure 7 , Figure 7 yes Figure 3 The exploded view of the partial structure of the projection device 100 shown in FIG. 1 shows, the water cooling structure 30 further includes a water inlet 34 and a water outlet 35. The water inlet 34 is connected to the third sub-water cooling chamber 331, and the water outlet 35 is connected to the fourth sub-water cooling chamber 332. The cooling liquid can enter the third sub-water cooling chamber 331 through the water inlet 34 and flow through the first sub-water cooling chamber 321, the second water cooling chamber 32, the second sub-water cooling chamber 322 and the fourth sub-water cooling chamber 332 in sequence, and then flow out through the water outlet 35. The cooling liquid takes away the heat absorbed by the water cooling chamber during the flow in the water cooling chamber, so that the water cooling chamber is kept in a state where it can continuously absorb the heat inside the optical housing 10, thereby realizing the absorption and dissipation of the heat inside the optical housing 10 by the water cooling chamber.

[0063] In some embodiments, the first water-cooling chamber 31 has a first cavity 3101, and the first cavity 3101 is located on the side of the first water-cooling chamber 31 facing away from the inside of the optical housing 10. The side of the first water-cooling chamber 31 facing away from the optical component 20 is provided with a first cover plate 36, and the first cover plate 36 is covered on the first cavity 3101; the first sub-water-cooling chamber 321 has a first sub-cavity 3202, and the second sub-water-cooling chamber 322 has a second sub-cavity 3203. The first sub-cavity 3202 and the second sub-cavity 3203 are both located on the side of the second water-cooling chamber 32 facing away from the optical component 20. The second water-cooling chamber A second cover plate 37 is provided on the side of the third water cooling chamber 33 facing away from the optical component 20, and the second cover plate 37 covers the first sub-cavity opening 3202 and the second sub-cavity opening 3203; the third sub-water cooling chamber 331 has a third sub-cavity opening 3301, and the fourth sub-cavity opening 3302 is provided, and the third sub-cavity opening 3301 and the fourth sub-cavity opening 3302 are both located on the side of the third water cooling chamber 33 facing away from the optical component 20, and a third cover plate 38 is provided on the side of the third water cooling chamber 33 facing away from the optical component 20, and the third cover plate 38 covers the third sub-cavity opening 3301 and the fourth sub-cavity opening 3302.

[0064] The first water cooling chamber 31 and the third water cooling chamber 33 are located on the outer wall of the optical housing 10 , and the second water cooling chamber 32 is accommodated inside the optical housing 10 .

[0065] It can be understood that the first water cooling chamber 31 , the second water cooling chamber 32 and the third water cooling chamber 33 can be respectively arranged inside or outside the optical housing 10 according to actual needs.

[0066] In some embodiments, the first water cooling chamber 31 , the second water cooling chamber 32 and the third water cooling chamber 33 are all formed integrally with the optical housing 10 .

[0067] In some other embodiments, the first water cooling chamber 31 , the second water cooling chamber 32 and the third water cooling chamber 33 are respectively detachably connected to the optical housing 10 .

[0068] See also Figure 8 and Fig. 9 , Figure 8 yes Figure 3 The perspective view of a part of the structure of the projection device 100 is shown. Fig. 9 yes Figure 8 The partial structural exploded view of the projection device 100 shown in FIG. 1 shows, in some embodiments, the projection device 100 further includes a heat dissipation assembly 40, which is disposed on the non-optical surface of the prism module 22. In the process of the prism module 22 generating a thermal effect, the heat of the prism module 22 can be quickly transferred to the heat dissipation assembly 40 and diffused to the air inside the optical housing 10, and then absorbed and taken away by the first water cooling chamber 31, the second water cooling chamber 32 and the third water cooling chamber 33, thereby avoiding heat accumulation in the prism module 22 and improving heat dissipation efficiency.

[0069] In some embodiments, the heat dissipation assembly 40 includes a first heat dissipation member 41, a second heat dissipation member 42, and a third heat dissipation member 43, and the first heat dissipation member 41, the second heat dissipation member 42, and the third heat dissipation member 43 are respectively attached to the three non-optical surfaces of the prism module 22. When the prism module 22 generates a thermal effect, the heat of the prism module 22 can be transferred to the three heat dissipation members through its three non-optical surfaces, so that the prism module 22 can be quickly cooled.

[0070] Specifically, the prism module 22 includes a first prism 221 and a second prism 222, both of which are triangular prisms, and the first prism 221 is located between the second prism 222 and the digital micromirror device 21. The first prism 221 has a first optical surface 2211, a second optical surface 2212, a third optical surface 2213, a first non-optical surface 2214, and a second non-optical surface 2215. The first optical surface 2211, the second optical surface 2212, and the third optical surface 2213 are connected end to end, the second optical surface 2212 is directly opposite to the reflective surface 211 of the digital micromirror device 21, and the first non-optical surface 2214 and the second non-optical surface 2215 are parallel. The second prism 222 has a fourth optical surface 2221, a fifth optical surface 2222, a third non-optical surface 2223, a fourth non-optical surface 2224 and a fifth non-optical surface 2225. The third non-optical surface 2223, the fourth optical surface 2221 and the fifth optical surface 2222 are connected end to end, the fourth optical surface 2221 and the third optical surface 2213 are bonded, the fifth optical surface 2222 is located on the side of the second prism 222 facing away from the digital micromirror device 21, and the fourth non-optical surface 2224 and the fifth non-optical surface 2225 are parallel.

[0071] The first non-optical surface 2214 and the fourth non-optical surface 2224 are coplanar and form one of the three non-optical surfaces, the second non-optical surface 2215 and the fifth non-optical surface 2225 are coplanar and form another one of the three non-optical surfaces, and the third non-optical surface 2223 is another one of the three non-optical surfaces. The first heat sink 41 is bonded to the first non-optical surface 2214 and the fourth non-optical surface 2224, the second heat sink 42 is bonded to the second non-optical surface 2215 and the fifth non-optical surface 2225, and the third heat sink 43 is bonded to the third non-optical surface 2223.

[0072] After the light emitted by the light source enters the interior of the optical housing 10, the light can pass through the first optical surface 2211 and be incident on the third optical surface 2213, and then pass through the second optical surface 2212 after being reflected by the third optical surface 2213 and be incident on the reflective surface 211 of the digital micromirror device 21. The reflective surface 211 can reflect the light to the imaging optical path or the non-imaging optical path. When the light is reflected to the imaging optical path and becomes an imaging light, the imaging light can sequentially pass through the second optical surface 2212, the third optical surface 2213, the fourth optical surface 2221 and the fifth optical surface 2222, so as to be projected to the screen through the lens to form an image; when the light is reflected to the non-imaging optical path and becomes a non-imaging light, the non-imaging light can pass through the second optical surface 2212, and then pass through the first non-optical surface 2214 or the third non-optical surface 2223, and at least partially projected on the first heat sink 41, and the first heat sink 41 can absorb and dissipate the heat generated by the non-imaging light projected thereon.

[0073] The first water cooling chamber 31 and the first heat sink 41 are arranged correspondingly, and a certain distance is spaced between the first water cooling chamber 31 and the first heat sink 41 .

[0074] In some embodiments, the heat dissipation assembly 40 also includes a support frame 44, which is fixed to the optical housing 10, and the support frame 44 is provided with at least three groups of spring clips 441, wherein the three groups of spring clips 441 are respectively abutted against the first heat dissipation member 41, the second heat dissipation member 42 and the third heat dissipation member 43, so that the first heat dissipation member 41, the second heat dissipation member 42 and the third heat dissipation member 43 are respectively pressed against the above-mentioned three non-optical surfaces.

[0075] In a specific implementation process, the first heat sink 41 , the second heat sink 42 , the third heat sink 43 and the support frame 44 can be fixed to the optical housing 10 by screws.

[0076] Please refer to Figure 2 In some embodiments, the projection device 100 further includes a lens module 50 , which is installed inside the optical housing 10 . After the light emitted by the light source enters the optical housing 10 , it is processed by the lens module 50 and then incident on the prism module 22 .

[0077] In some embodiments, the projection device 100 further includes a lens, which is mounted on the optical housing 10 , and is used to project the imaging light emitted by the optical component 20 onto a screen to form an image.

[0078] In some embodiments, the projection device 100 further includes a light source, and the light source is used to emit light to the optical component 20 .

[0079] This embodiment further provides a projector, which includes the projection device 100 as described in any of the above embodiments.

[0080] The projector of the embodiment of the present invention also has the advantages of the projection device 100 described above, which will not be described in detail here.

[0081] It should be particularly noted that the projector provided in the embodiment of the utility model only shows the part related to the technical problem to be solved by the embodiment of the utility model. It can be understood that the projector provided in the embodiment of the utility model also includes other structures for realizing the functions of the projector, including but not limited to a water circulation system, etc.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A projection device, characterized in that: include: Optical housing; An optical component is disposed in the optical housing, the optical component includes a digital micromirror device and a prism module, and the prism module is located on a side corresponding to the reflective surface of the digital micromirror device; A water cooling structure is provided in the optical housing, and the water cooling structure comprises a first water cooling chamber and a second water cooling chamber, wherein the first water cooling chamber is located at a first side of the optical component, and the second water cooling chamber is located at a second side of the optical component.

2. The projection device according to claim 1, characterized in that: The first water cooling chamber is located in the emission direction of the non-imaging light reflected by the reflection surface.

3. The projection device according to claim 1, characterized in that: The second water cooling chamber is located on a side of the prism module facing away from the digital micromirror device; The second water-cooling chamber is provided with a light opening, and the light opening is used to allow the imaging light reflected by the reflection surface to pass through.

4. The projection device according to any one of claims 1 to 3, characterized in that: The water cooling structure further includes a third water cooling chamber, and the third water cooling chamber is arranged on a third side of the optical component.

5. The projection device according to claim 4, characterized in that: The first water cooling chamber and the third water cooling chamber are respectively arranged on two adjacent side walls of the optical housing, and two adjacent sides of the second water cooling chamber are respectively connected to the two adjacent side walls.

6. The projection device according to claim 4, characterized in that: The first water cooling chamber, the second water cooling chamber and the third water cooling chamber are connected.

7. The projection device according to claim 6, characterized in that: The second water-cooling chamber comprises a first sub-water-cooling chamber and a second sub-water-cooling chamber separated from each other; The third water-cooling chamber comprises a third sub-water-cooling chamber and a fourth sub-water-cooling chamber separated from each other; The first sub-water-cooling chamber is connected to the third sub-water-cooling chamber and the first water-cooling chamber, and the second sub-water-cooling chamber is connected to the fourth sub-water-cooling chamber and the first water-cooling chamber.

8. The projection device according to claim 1, characterized in that: It also includes a heat dissipation component, which is arranged on the non-optical surface of the prism module.

9. The projection device according to claim 8, characterized in that: The heat dissipation assembly includes a first heat dissipation member, a second heat dissipation member and a third heat dissipation member, and the first heat dissipation member, the second heat dissipation member and the third heat dissipation member are respectively attached to three non-optical surfaces of the prism module.

10. A projector, characterized in that: The invention comprises a projection device as claimed in any one of claims 1 to 9.

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