CN222354266U - Projection device and projector - Google Patents

Abstract

The utility model relates to the technical field of projectors, and discloses a projection device and a projector. The optical component is arranged on the optical machine shell and comprises a digital micro-mirror device and a prism module, and the prism module is positioned on one side corresponding to the reflecting surface of the digital micro-mirror device. The water cooling structure is arranged on the optical machine shell and comprises a first water cooling chamber and a second water cooling chamber, wherein the first water cooling chamber is positioned on the first side of the optical assembly, and the second water cooling chamber is positioned on the second side of the optical assembly. Through the arrangement, the environment temperature inside the optical machine shell can be effectively reduced, the situation that the inside of the optical machine shell generates higher temperature due to accumulation of a large amount of heat is avoided, and the heat dissipation effect is good.

Description

Projection device and projector

Technical Field

The present utility model relates to the field of projector technologies, and in particular, to a projector and a projector.

Background

In a projection apparatus of a DLP (DIGITAL LIGHT Processing digital light) projector, high-brightness light generated by a light source enters an optical engine housing, is processed by optical elements such as a prism and a digital micromirror device, and then propagates to a lens, and the lens projects the light to a screen to form an image.

In the working process of the projection device, as the light is continuously projected into the light machine shell, the light can generate a thermal effect in the light machine shell during the transmission and projection processes, so that a large amount of heat is accumulated in the light machine shell, and the ambient temperature in the light machine shell is increased. Most of the traditional projection devices utilize a fan or a combination of the fan and the radiating fins to radiate heat of the optical enclosure so as to reduce the ambient temperature inside the optical enclosure, however, for the projection devices with high brightness, the heat generated during the working is larger, and the effect of radiating heat by utilizing the fan or the combination of the fan and the radiating fins is poor, so that the working temperature requirement of the projection devices is difficult to be met.

Disclosure of utility model

The embodiment of the utility model aims to provide a projection device and a projector, which are used for solving the technical problem that the heat dissipation effect of the projection device is poor in the prior art.

In one aspect, an embodiment of the present utility model provides a projection apparatus, including:

an optical housing;

The optical component is arranged on the optical machine shell and comprises a digital micro-mirror device and a prism module, and the prism module is positioned on one side corresponding to the reflecting surface of the digital micro-mirror device;

The water cooling structure is arranged on the optical machine shell and comprises a first water cooling chamber and a second water cooling chamber, wherein the first water cooling chamber is positioned on the first side of the optical assembly, and the second water cooling chamber is positioned on the second side of the optical assembly.

In some embodiments, the first water-cooled chamber is located in an exit direction of the non-imaging light reflected by the reflecting surface.

In some embodiments, 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-passing port, and the light-passing port is used for allowing imaging light rays reflected by the reflecting surface to pass through.

In some embodiments, the water-cooled structure further comprises a third water-cooled chamber disposed on a third side of the optical assembly.

In some embodiments, the first water cooling chamber and the third water cooling chamber are respectively arranged on two adjacent side walls of the optical machine shell, and two adjacent sides of the second water cooling chamber are respectively connected with the two adjacent side walls.

In some embodiments, the first water-cooled chamber, the second water-cooled chamber, and the third water-cooled chamber are in communication.

In some embodiments, the second water-cooled chamber comprises a first sub-water-cooled chamber and a second sub-water-cooled chamber that are separated;

the third water cooling chamber comprises a third sub water cooling chamber and a fourth sub water cooling chamber which are separated;

The first sub water cooling chamber is communicated with the third sub water cooling chamber and the first water cooling chamber, and the second sub water cooling chamber is communicated with the fourth sub water cooling chamber and the first water cooling chamber.

In some embodiments, the projection device further comprises a heat dissipation component disposed at the non-optical surface of the prism module.

In some embodiments, the heat dissipation assembly includes a first heat dissipation element, a second heat dissipation element, and a third heat dissipation element, each of which is attached to three non-optical surfaces of the prism module.

On the other hand, the embodiment of the utility model also provides a projector, which comprises the projection device.

Compared with the prior art, in the process of working and generating a thermal effect, the first water cooling chamber can absorb and take away the heat in the optical engine shell from the first side, and the second water cooling chamber can absorb and take away the heat in the optical engine shell from the second side, so that the heat in the optical engine shell can be dissipated by the two water cooling chambers in different directions and positions, the environmental temperature in the optical engine shell can be effectively reduced, and the situation that a large amount of heat is accumulated in the optical engine shell to generate a higher temperature is avoided. Compared with the traditional scheme of radiating the light casing by using the fan or combining the fan and the radiating fins, the projection device provided by the embodiment of the utility model has better radiating effect, meets the working temperature requirement of an optical assembly, is beneficial to maintaining the optical performance stability of the optical assembly, and allows the projection device to output light with higher brightness.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures are not to be considered limiting, unless expressly stated otherwise.

FIG. 1 is a perspective view of a projection apparatus according to an embodiment of the present utility model;

FIG. 2 is another angular perspective view of the projection device shown in FIG. 1;

FIG. 3 is an exploded view of the projection device shown in FIG. 2;

FIG. 4 is a schematic view of a portion of the structure of the projection device shown in FIG. 3;

FIG. 5 is a top view of a portion of the structure of the projection device shown in FIG. 3;

FIG. 6 is a perspective cross-sectional view of a portion of the optical enclosure shown in FIG. 5 taken along the direction A-A;

FIG. 7 is an exploded view of a portion of the structure of the projection device shown in FIG. 3;

FIG. 8 is a perspective view of a portion of the structure of the projection device shown in FIG. 3;

fig. 9 is an exploded view of a part of the structure of the projection apparatus shown in fig. 8.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "connected" to another element, it can be directly on the other element or intervening elements may be present. The terms "upper," "lower," "left," "right," "upper," "lower," "top," and "bottom," and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 to 4, fig. 1 is a perspective view of a projection apparatus 100 according to an embodiment of the utility model, fig. 2 is another perspective view of the projection apparatus 100 shown in fig. 1, fig. 3 is an exploded view of the projection apparatus 100 shown in fig. 2, and fig. 4 is a schematic view of a part of the structure of the projection apparatus 100 shown in fig. 3. The embodiment of the utility model provides a projection device 100, wherein the projection device 100 comprises an optical housing 10, an optical assembly 20 and a water cooling structure 30.

The optical assembly 20 is disposed on the optical housing 10, the optical assembly 20 includes a digital micromirror device 21 and a prism module 22, and the prism module 22 is disposed on a side corresponding to the reflective surface 211 of the digital micromirror device 21.

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

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 on a first side of the optical component 20, and the second water cooling chamber 32 is located on a second side of the optical component 20.

Wherein the first side is one of an upper side, a lower side, a left side, a right side, a front side, and a rear side of the optical assembly 20, the first side is one of the upper side, the lower side, the left side, the right side, the front side, and the rear side of the optical assembly 20, and the first side and the second side are different sides of the optical assembly 20.

In the embodiment of the present utility model, during the operation of the projection apparatus 100 and the generation of the thermal effect, the first water cooling chamber 31 can absorb and take away the heat inside the optical engine housing 10 from the first side, and the second water cooling chamber 32 can absorb and take away the heat inside the optical engine housing 10 from the second side, so that the heat inside the optical engine housing 10 can be dissipated by the two water cooling chambers in different directions and positions, thereby effectively reducing the ambient temperature inside the optical engine housing 10 and avoiding the generation of a higher temperature inside the optical engine housing 10 due to the accumulation of a large amount of heat. Compared with the conventional scheme of radiating the light casing by using a fan or combining the fan and the radiating fins, the projection device 100 provided by the embodiment of the utility model has a better radiating effect, meets the working temperature requirement of the optical component 20, is beneficial to maintaining the optical performance stability of the optical component 20, and allows the projection device 100 to output light with higher brightness.

In some embodiments, as shown in fig. 1-3, the optical enclosure 10 includes a main enclosure 11 and side panels 12. The main housing 11 is provided with a receiving chamber 101, a first opening 102 and a second opening 103, the first opening 102 and the second opening 103 being located at both ends of the main housing 11, respectively, and the first opening 102 and the second opening 103 being in communication with the receiving chamber 101. The side plate 12 is installed at the first opening 102 of the main housing 11, and covers the first opening 102. The side plate 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 in communication with the accommodating chamber 101.

The digital micro-mirror device 21 is arranged on one side of the side plate 12 facing away from the main shell 11, and the digital micro-mirror device 21 is opposite to the third opening 104, and the reflecting surface 211 of the digital micro-mirror device 21 faces the accommodating cavity 101. The prism module 22 is accommodated in the accommodating cavity 101, and light is transmitted between the digital micromirror device 21 and the prism module 22 through the third opening 104.

In other embodiments, the third opening 104 may be omitted, and the digital micromirror device 21 is accommodated in the accommodating cavity 101.

In this embodiment, when the projection apparatus 100 works, after the light emitted by the light source enters the accommodating cavity 101 through the fourth opening 105, the light is processed by the prism module 22 and projected to the reflecting surface 211 of the digital micromirror device 21 through the third opening 104, the reflecting surface 211 reflects the incident light, the reflecting surface 211 can sequentially pass through the third opening 104 and the second opening 103 and project out of the optical housing 10, and the reflecting surface 211 can also pass through the third opening 103 and project inside the optical housing 10.

The digital micromirror device 21 includes a plurality of micromirrors arranged in a matrix, and the plurality of micromirrors are arranged to form a reflecting surface 211 of the digital micromirror device 21, the reflecting surface 211 is used for reflecting incident light, and each micromirror can switch between a first angle and a second angle and reflect the incident light. As shown in fig. 4, the micro-mirror is in an "on" (on) state at a first angle, the micro-mirror can reflect incident light to an imaging light path to form imaging light L1, the imaging light L1 can be projected to a screen through a lens to form an image, and in an "off" (off) state at a second angle, the micro-mirror can reflect incident light to a non-imaging light path to form non-imaging light L2, the non-imaging light L2 is projected inside the light machine housing 10, and the non-imaging light L2 does not participate in the image projection of the lens.

When the non-imaging light reflected by the reflecting surface 211 is projected inside the optical engine housing 10 to a corresponding position, the position generates high heat, which easily causes an increase in the ambient temperature inside the optical engine housing 10. To better dissipate heat inside the optical enclosure 10, in some embodiments, the first water-cooling chamber 31 is located in an outgoing direction of the non-imaging light L2 reflected by the reflecting surface 211, that is, when the micromirrors of the digital micromirror device 21 are in an "off" state, the non-imaging light L2 is reflected toward the first water-cooling chamber 31, so that the non-imaging light L2 may be projected onto the first water-cooling chamber 31, or onto a structure (for example, a first heat dissipation element 41 described below) attached to or spaced from the first water-cooling chamber 31, so that the first water-cooling chamber 31 corresponds to a position where the non-imaging light L2 is projected, so that the first water-cooling chamber 31 can dissipate heat for a position with higher heat, and a heat dissipation effect of the first water-cooling chamber 31 on the inside the optical enclosure 10 is improved.

Specifically, taking the orientation shown in fig. 3 and 4 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 reflecting surface 211 exits rightward at a certain inclination angle with respect to the digital micromirror device 21.

It is understood that the position of the first water cooling chamber 31 relative to the optical component 20 may be set according to the emitting direction of the non-imaging light L2, for example, when the non-imaging light L2 emits downward at a certain inclination angle relative to the digital micromirror device 21, the first water cooling chamber 31 may be disposed at the lower side of the optical component 20, so that the position where the non-imaging light L2 is projected to the first water cooling chamber 31 may correspond to the position where the non-imaging light L2 is projected to.

In some embodiments, the second water-cooled chamber 32 is located on a side of the reflective surface facing, and the micromirror of the dmd 21 is in an "on" (on) state, which reflects the imaging light L1 toward the second water-cooled chamber 32. The second water cooling chamber 32 is provided with a light-passing opening 3201, and the light-passing opening 3201 is used for passing the imaging light L1 reflected by the reflecting surface 211. The second water cooling chamber 32 can radiate heat inside the optical housing 10 and avoid shielding the imaging light reflected by the micro mirrors of the digital micro mirror device 21.

The reflecting surface 211 is opposite to the third opening 104 and the light-transmitting opening 3201, and the reflecting surface 211, the third opening 104 and the light-transmitting opening 3201 are located on the same straight line.

Specifically, taking the orientation shown in fig. 3 and 4 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 reflecting surface 211 exits forward.

It is understood that the position of the second water cooling chamber 32 relative to the optical assembly 20 may be set according to practical needs, for example, the second water cooling chamber 32 is disposed at the rear side of the optical assembly 20.

In some embodiments, the water cooling structure 30 further includes a third water cooling chamber 33, the third water cooling chamber 33 being disposed on a third side of the optical assembly 20, such 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. In the process of working the projection device 100 and generating the heat effect, the third water cooling chamber 33 can absorb and take away the heat in the light housing 10 from the third side, so that the heat in the light housing 10 can be dissipated by the three water cooling chambers in different positions and different directions, and the heat dissipation efficiency is improved.

Wherein the third side is the other side of the upper side, the lower side, the left side, the right side, the front side, and the rear side of the optical assembly 20, and the first side is different from the second side and the third side.

Specifically, taking the orientation shown in fig. 3 and 4 as an example, the third water cooling chamber 33 is located on the upper side of the optical module 20.

It is understood that the position of the third water cooling chamber 33 relative to the optical assembly 20 may be set according to practical needs, for example, the third water cooling chamber 33 is disposed on the lower side of the optical assembly 20.

In some embodiments, the first water cooling chamber 31 and the third water cooling chamber 33 are respectively disposed on two adjacent side walls of the optical housing 10, and two adjacent sides of the second water cooling chamber 32 are respectively connected with the two adjacent side walls, so that 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 are enclosed on the optical assembly 20 from three different directions, thereby being capable of focusing on the vicinity of the optical assembly 20 to dissipate heat of the environment where the optical assembly 20 is located and improving heat dissipation efficiency.

Alternatively, the first water cooling chamber 31, the second water cooling chamber 32, and the third water cooling chamber 33 are disposed perpendicular to each other.

Referring to fig. 5 and 6, fig. 5 is a top view of a portion of the structure of the projection apparatus 100 shown in fig. 3, and fig. 6 is a perspective cross-sectional view of a portion of the structure of the optical engine housing 10 shown in fig. 5 along A-A direction, in some embodiments, the first water cooling chamber 31, the second water cooling chamber 32 and the third water cooling chamber 33 are communicated, 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, and only one liquid cooling system is needed to circulate and provide cooling liquid to the first water cooling chamber 31, the second water cooling chamber 32 and the third water cooling chamber 33, thereby reducing water pipe design and simplifying structure.

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 that are separated, and the third water-cooling chamber 33 includes a third sub-water-cooling chamber 331 and a fourth sub-water-cooling chamber 332 that are separated. The first sub water-cooling chamber 321 is communicated with the third sub water-cooling chamber 331 and the first water-cooling chamber 31, the second sub water-cooling chamber 322 is communicated with 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 communicated, 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 sequentially communicated, and the cooling liquid can sequentially flow 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 from the third sub water-cooling chamber 331.

Of course, the cooling liquid may 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 this order from the fourth sub-water-cooling chamber 332.

The first water cooling chamber 31, the second water cooling chamber 32 and the third water cooling chamber 33 may be formed on the light engine housing 10 together with the light engine housing 10. Through holes are respectively arranged 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 so as to realize the communication between the first sub water-cooling chamber 321 and the third sub water-cooling chamber 331, the communication between the first sub water-cooling chamber 321 and the first water-cooling chamber 31 and the communication between the first water-cooling chamber 31 and the fourth sub water-cooling chamber 332.

Referring to fig. 7, fig. 7 is an exploded view of a part of the structure of the projection apparatus 100 shown in fig. 3, and the water cooling structure 30 further includes a water inlet 34 and a water outlet 35. The water inlet nozzle 34 is connected to the third sub water cooling chamber 331, and the water outlet nozzle 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 nozzle 34 and sequentially 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, and then flows out through the water outlet nozzle 35, and the cooling liquid takes away the heat absorbed by the water cooling chamber in the flowing process of the water cooling chamber, so that the water cooling chamber is kept in a state capable of continuously absorbing the heat in the optical housing 10, and the absorption and the emission of the heat in the optical housing 10 by the water cooling chamber are realized.

In some embodiments, the first water-cooling chamber 31 has a first cavity port 3101, the first cavity port 3101 is located at a side of the first water-cooling chamber 31 facing away from the inside of the optical housing 10, a first cover plate 36 is disposed at a side of the first water-cooling chamber 31 facing away from the optical component 20, the first cover plate 36 covers the first cavity port 3101, the first sub-water-cooling chamber 321 has a first sub-cavity port 3202, the second sub-water-cooling chamber 322 has a second sub-cavity port 3203, the first sub-cavity port 3202 and the second sub-cavity port 3203 are located at a side of the second water-cooling chamber 32 facing away from the optical component 20, a second cover plate 37 is disposed at a side of the second water-cooling chamber 32 facing away from the optical component 20, the second cover plate 37 covers the first sub-cavity port 3202 and the second sub-cavity port 3203, the third sub-water-cooling chamber 331 has a third sub-cavity port 3301, the fourth sub-cooling chamber 332 has a fourth sub-cavity port 3302, the third sub-cavity port 3301 and the fourth sub-cavity port 3302 are located at a side of the third water-cooling chamber 33 facing away from the optical component 20, and the third cover plate 33038 is disposed at a side of the third sub-cooling chamber 33 facing away from the optical component 20.

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

It is understood that the first water cooling chamber 31, the second water cooling chamber 32 and the third water cooling chamber 33 may be disposed inside or outside the optical housing 10, respectively, according to actual needs.

In some embodiments, the first water cooling chamber 31, the second water cooling chamber 32, and the third water cooling chamber 33 are all integrally formed with the light engine housing 10 on the light engine housing 10.

In other embodiments, the first water cooling chamber 31, the second water cooling chamber 32, and the third water cooling chamber 33 are detachably connected to the optical engine housing 10.

Referring to fig. 8 and 9, fig. 8 is a perspective view of a portion of the structure of the projection apparatus 100 shown in fig. 3, and fig. 9 is an exploded view of a portion of the structure of the projection apparatus 100 shown in fig. 8, in some embodiments, the projection apparatus 100 further includes a heat dissipation component 40, where the heat dissipation component 40 is disposed at a non-optical surface of the prism module 22. In the process of generating the thermal effect by the prism module 22, the heat of the prism module 22 can be quickly transferred to the heat dissipation component 40 and is diffused to the air in the optical engine shell 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, so that the heat is prevented from accumulating at the prism module 22, and the heat dissipation efficiency is improved.

In some embodiments, the heat dissipation assembly 40 includes a first heat dissipation element 41, a second heat dissipation element 42, and a third heat dissipation element 43, and the first heat dissipation element 41, the second heat dissipation element 42, and the third heat dissipation element 43 are respectively attached to three non-optical surfaces of the prism module 22. In the process of generating the thermal effect of the prism module 22, the heat of the prism module 22 can be respectively transferred to the three heat dissipation elements through the three non-optical surfaces, so that the rapid heat dissipation of the prism module 22 can be realized.

Specifically, the prism module 22 includes a first prism 221 and a second prism 222, where the first prism 221 and the second prism 222 are triple 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, where 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 faces the reflective surface 211 of the dmd 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 attached, the fifth optical surface 2222 is located on a surface 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.

Wherein 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.

After the light emitted by the light source enters the optical housing 10, the light may pass through the first optical surface 2211 and enter the third optical surface 2213, be reflected by the third optical surface 2213, pass through the second optical surface 2212 and enter the reflecting surface 211 of the dmd 21, and the reflecting surface 211 may reflect the light to an imaging optical path or a non-imaging optical path. When the light is reflected to the imaging light path to become 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 light path to become non-imaging light, the non-imaging light can pass through the second optical surface 2212, then pass through the first non-optical surface 2214 or the third non-optical surface 2223 and at least partially project on the first heat dissipation member 41, and the first heat dissipation member 41 can absorb and dissipate heat generated by the non-imaging light projected on the first heat dissipation member.

The first water cooling chamber 31 is disposed corresponding to the first heat sink 41, and a certain distance is provided between the first water cooling chamber 31 and the first heat sink 41.

In some embodiments, the heat dissipation assembly 40 further includes a support frame 44, the support frame 44 is fixed to the optical housing 10, and the support frame 44 is provided with at least three sets of elastic sheets 441, wherein the three sets of elastic sheets 441 are respectively abutted against the first heat dissipation element 41, the second heat dissipation element 42, and the third heat dissipation element 43, so that the first heat dissipation element 41, the second heat dissipation element 42, and the third heat dissipation element 43 are respectively abutted against the three non-optical surfaces.

In the specific implementation process, the first heat dissipation element 41, the second heat dissipation element 42, the third heat dissipation element 43, and the supporting frame 44 may be fixed to the optical enclosure 10 by screws.

Referring back to fig. 2, in some embodiments, the projection apparatus 100 further includes a lens module 50, the lens module 50 is installed inside the optical engine housing 10, and the light emitted by the light source enters the optical engine housing 10 and is processed by the lens module 50 to be incident on the prism module 22.

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

In some embodiments, projection device 100 further includes a light source for emitting light toward optical assembly 20.

The present embodiment also provides a projector including the projection apparatus 100 according to any one of the embodiments above.

The projector according to the embodiment of the utility model also has the advantages of the above-mentioned projection device 100, and will not be described herein.

It should be specifically noted that, the projector provided in the embodiment of the present utility model only shows a portion related to the technical problem to be solved in the embodiment of the present utility model, and it is understood that the projector provided in the embodiment of the present utility model further includes other structures for implementing the function of the projector, including, but not limited to, a water circulation system and the like.

It should finally be noted that the above embodiments are only intended to illustrate the technical solution of the present utility model and not to limit it, that the technical features of the above embodiments or of the different embodiments may be combined in any order, and that many other variations in the different aspects of the present utility model as described above exist, which are not provided in details for the sake of brevity, and that, although the present utility model is described in the detailed description with reference to the foregoing embodiments, it should be understood by those skilled in the art that it may still make modifications to the technical solution described in the foregoing embodiments or equivalent to some of the technical features thereof, where these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present utility model.

Claims (10)

1. A projection device, comprising: 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 , wherein the first water cooling chamber is located in an emission direction of the non-imaging light reflected by the reflection surface. 3. The projection device according to claim 1, wherein 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 claim 1 , wherein the water cooling structure further comprises 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, wherein 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 , wherein 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 , further comprising a heat dissipation component, wherein the heat dissipation component is disposed on a non-optical surface of the prism module. 9. The projection device according to claim 8, characterized in that the heat dissipation assembly comprises 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 by comprising the projection device according to any one of claims 1 to 9.