CN120491378A - Projection equipment - Google Patents
Projection equipmentInfo
- Publication number
- CN120491378A CN120491378A CN202510932351.4A CN202510932351A CN120491378A CN 120491378 A CN120491378 A CN 120491378A CN 202510932351 A CN202510932351 A CN 202510932351A CN 120491378 A CN120491378 A CN 120491378A
- Authority
- CN
- China
- Prior art keywords
- water
- light valve
- flow channel
- plate body
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Projection Apparatus (AREA)
Abstract
本发明公开了一种投影设备，包括支架、光机组件、水冷系统，所述光机组件包括光阀壳体和光阀，所述光阀安装于所述光阀壳体内，所述支架内开设有与所述水冷系统连通的水流通道，所述支架于对应所述水流通道位置的外表面形成第一散热面，所述光阀壳体与所述第一散热面相接。本发明提出的投影设备，能够快速散掉光阀壳体的热量，避免对光阀造成不良影响。
The present invention discloses a projection device comprising a bracket, an optical-mechanical assembly, and a water-cooling system. The optical-mechanical assembly includes a light valve housing and a light valve, the light valve being mounted within the light valve housing. The bracket defines a water flow channel connected to the water-cooling system. The bracket's outer surface corresponding to the water flow channel forms a first heat dissipation surface, and the light valve housing is connected to the first heat dissipation surface. The projection device proposed in the present invention can quickly dissipate heat from the light valve housing, avoiding adverse effects on the light valve.
Description
Technical Field
The present disclosure relates to projection devices, and particularly to a projection device.
Background
Projection devices are popular in the consumer market due to their high brightness, portability, and intelligence. The core components in the projection device comprise a projection optical machine, for a DLP projector, a DMD (Digital Micromirror Device ) is arranged in the projection optical machine, light rays can be reflected by rotating small-sized rotatable lenses distributed on the surface of the DMD, and the rotation of each lens is controlled by a circuit, so that the light and dark state of each pixel point in a projection picture is controlled by the circuit. The light beam emitted by the optical engine light source irradiates the surface of the DMD after being subjected to a series of light path adjustment such as zooming, collimation and the like, forms a projection light beam with image information after being reflected by a lens on the surface of the DMD, and finally is amplified by a projection lens and then projected.
However, with the improvement of the frame rate of the picture and the enhancement of the brightness of the picture, the power consumption of the DMD and the heat caused by the irradiation of the light are not affected negligibly, especially, the light is reflected to the case by the lens corresponding to the dark state, so that the temperature of the case and the inside of the case is increased, thereby affecting the performance of the DMD. If the DMD is too high, the operation of the device is slow, the device will fail, and the projected image will be abnormal, so how to effectively dissipate the heat of the DMD is a problem to be solved when the DMD with increasingly high brightness and higher performance is faced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a projection device which can rapidly dissipate heat of a light valve shell and avoid adverse effects on the light valve.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The invention discloses projection equipment, which comprises a bracket, an optical-mechanical assembly and a water cooling system, wherein the optical-mechanical assembly comprises a light valve shell and a light valve, the light valve is arranged in the light valve shell, a water flow channel communicated with the water cooling system is arranged in the bracket, a first heat radiating surface is formed on the outer surface of the bracket corresponding to the position of the water flow channel, and the light valve shell is connected with the first heat radiating surface.
Preferably, the support comprises a support body and a water cooling plate, the water cooling plate is detachably connected to the support body, the water flow channel is formed in the water cooling plate, and the first radiating surface is located on the water cooling plate.
Preferably, the water cooling plate comprises a first plate body and a second plate body which are detachably connected with each other, the first plate body and/or the second plate body is detachably connected with the bracket main body, the water flow channel is formed between the first plate body and the second plate body, one side, away from the first plate body, of the second plate body is provided with a water inlet pipe and a water outlet pipe which are communicated with the water flow channel, and the water inlet pipe and the water outlet pipe are respectively communicated with the water cooling system.
Preferably, one side of the first plate body, which is close to the second plate body, and one of the sides of the second plate body, which is close to the first plate body, are sunken to form the water flow channel, a plurality of guide columns arranged at intervals are convexly arranged in the water flow channel, and when the first plate body and the second plate body are in sealing connection with each other, the guide columns are propped against the corresponding plate body which is not provided with the water flow channel.
Preferably, the water cooling plate further comprises a first sealing piece and a second sealing piece, wherein the first sealing piece is abutted between the first plate body and the second plate body and is positioned at the outer edge of the water flow channel, and the second sealing piece is abutted between the guide post and the corresponding plate body which is not provided with the water flow channel.
Preferably, the top surface of the light valve housing is abutted to the first radiating surface directly or through a heat conducting buffer member.
Preferably, the light valve comprises a DMD, the area of the light valve housing for receiving the ineffective light reflected by the DMD is a heat generating area, and the outer surface of the light valve housing corresponding to the heat generating area is connected with the first heat dissipating surface.
Preferably, the water cooling system comprises a cold row, a heat conversion part, a water pipe, a water pump and a fan, wherein the cold row, the water pump and the fan are respectively fixed on the support, the heat conversion part is abutted to the optical machine assembly, the cold row, the heat conversion part, the water pump and the water flow channel are communicated through the water pipe to form a circulating runner, and the air outlet side of the fan faces the cold row.
Preferably, the cold row, the heat conversion part and the water pump are all positioned on the same side of the water cooling plate, the water cooling plate is provided with a water inlet pipe and a water outlet pipe which are communicated with the water flow channel, and the water inlet pipe and the water outlet pipe are positioned on one side of the water cooling plate, which is close to the optical-mechanical assembly.
Preferably, the optical-mechanical assembly further comprises a light source and a projection lens, the light source, the light valve and the projection lens are sequentially arranged along a light path, the light valve shell is provided with a light inlet and a light outlet, the light inlet is communicated to one side of the light source, the light outlet is communicated to one side of the projection lens, the light source and the light valve are respectively abutted to the heat conversion part, the support is provided with a fixing column in a protruding mode, and the optical-mechanical assembly is fixed on the fixing column through a fastener.
Compared with the prior art, the projection equipment provided by the invention has the beneficial effects that the water cooling system is introduced, the water flow channel communicated with the flow channel in the water cooling system is arranged in the bracket, and the light valve shell where the light valve is positioned is connected with the outer surface of the position of the light valve corresponding to the water flow channel of the bracket, so that the heat on the light valve shell is transferred to the outer surface of the bracket corresponding to the position of the water flow channel, and then the heat is quickly taken away through the water cooling liquid in the water flow channel, thereby realizing the efficient heat dissipation of the light valve shell, overcoming the bottleneck problem of the heat management efficiency of the high-load light valve and avoiding the adverse effect on the light valve.
In a further scheme, the water flow channel is arranged on the water cooling plate detachably connected with the bracket main body, and different water cooling plates can be correspondingly replaced when the water flow channel is suitable for optical machine components with different specifications, so that the equipment cost is reduced.
Other advantages of embodiments of the present invention are further described below.
Drawings
FIG. 1 is a schematic view showing the internal structure of a projection apparatus according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the optical path of a light valve within a light valve housing;
FIG. 3 is an exploded schematic view of a water cooled plate;
FIG. 4 is an exploded view of another angle of a water cooled plate;
FIG. 5 is a schematic view of the water cooling plate detached from the bracket body;
FIG. 6 is a schematic view of another angle of the interior of the projection device;
Fig. 7 is a schematic structural view of the bracket.
Reference numerals illustrate:
10. The water-cooling device comprises a bracket, a bracket main body, 12, a water-cooling plate, 121, a first plate body, 122, a second plate body, 123, a first sealing element, 124, a second sealing element, 1221, a water inlet pipe, 1222, a water outlet pipe, 1223, a water inlet, 1224, a water outlet, 1225, a threaded hole, 13, a fixed column, 101, a water flow channel, 102, a first radiating surface, 103 and a flow guiding column;
20. The light source comprises a light engine assembly, a light valve shell, 211, a light inlet, 212, a light outlet, 213, a heating area, 214, radiating fins, 22, a light valve, 221, a reflecting element, 222, effective light, 223, ineffective light, 23, a light source, 24 and a projection lens;
30. A water cooling system; 31, cold rows, 32, a heat conversion part, 33, a water pipe, 34, a water pump, 35 and a fan.
Detailed Description
The following describes embodiments of the present invention in detail. It should be emphasized that the following description is merely exemplary in nature and is in no way intended to limit the scope of the invention or its applications.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In addition, the connection may be for both the fixing action and the circuit/signal communication action.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing embodiments of the invention and to simplify the description by referring to the figures, rather than to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless explicitly defined otherwise.
As shown in fig. 1 to 3, a projection device is disclosed in a preferred embodiment of the present invention, which includes a bracket 10, an optical-mechanical assembly 20, and a water cooling system 30, wherein the optical-mechanical assembly 20 includes a light valve housing 21 and a light valve 22, the light valve 22 is installed in the light valve housing 21, a water flow channel 101 communicating with the water cooling system 30 is formed in the bracket 10, a first heat dissipation surface 102 is formed on an outer surface of the bracket 10 corresponding to the position of the water flow channel 101, and the light valve housing 21 is connected with the first heat dissipation surface 102, so that heat on the light valve housing 21 can be rapidly transferred and taken away by water cooling liquid.
The projection device provided by the preferred embodiment of the invention introduces the water cooling system 30, the water flow channel 101 communicated with the flow channel in the water cooling system 30 is arranged in the bracket 10, and the light valve shell 21 where the light valve 22 is positioned is connected with the outer surface of the bracket 10 corresponding to the position of the water flow channel 101, so that the heat on the light valve shell 21 is transferred to the outer surface of the bracket 10 corresponding to the position of the water flow channel 101, and then the heat is quickly taken away by the water cooling liquid in the water flow channel 101, thereby realizing the efficient heat dissipation of the light valve shell 21, overcoming the bottleneck problem of the heat management efficiency of the high-load light valve 22 and avoiding the adverse effect on the light valve 22.
In a further embodiment, the bracket 10 includes a bracket body 11 and a water cooling plate 12, the water cooling plate 12 is detachably connected to the bracket body 11, the water flow channel 101 is opened inside the water cooling plate 12, and the first heat dissipating surface 102 is located on the water cooling plate 12. Specifically, the water cooling plate 12 is fastened to the bracket main body 11 by a fastener such as a screw, and when facing the optical machine assembly 20 with different dimensions, the water cooling plate 12 with a corresponding shape can be replaced independently instead of replacing the whole bracket 10, so that the equipment cost can be reduced to a great extent.
Referring to fig. 3 and 4, the water-cooling plate 12 includes a first plate 121 and a second plate 122 which are detachably connected to each other, the first plate 121 and/or the second plate 122 is detachably connected to the bracket main body 11, the water flow channel 101 is formed between the first plate 121 and the second plate 122, a water inlet pipe 1221 and a water outlet pipe 1222 which are communicated with the water flow channel 101 are provided at one side of the second plate 122 far from the first plate 121, a water inlet 1223 is formed in the water inlet pipe 1221, a water outlet 1223 is formed in the water outlet pipe 1222, that is, the water inlet 1223 and the water outlet 1224 are respectively formed at one side of the second plate 122 near the first plate 121 by pipe holes of the water inlet pipe 1221 and the water outlet pipe 1222, the water inlet 1221 and the water outlet 1222 are respectively communicated with the water-cooling system 30, the water inlet 1223 is opposite to one end of the water flow channel 101, and the water outlet 1224 is opposite to the other end of the water flow channel 101. Specifically, the first plate 121 and the second plate 122 may be fastened by fastening means such as screws, for example, the fastening means such as screws may sequentially pass through the bracket body 11, the second plate 122 and the first plate 121 so that the first plate 121 and the second plate 122 are simultaneously fixed on the bracket body 11. In another embodiment, the first plate 121 and the second plate 122 may be locked and connected first, and then the first plate 121 or the second plate 122 may be locked and connected to the bracket body 11, for example, the second plate 122 is matched with the threaded hole on the bracket body 11 through the threaded hole 1225 to achieve screw fastening connection.
In some embodiments, a side of the first plate 121 near the second plate 122 is recessed to form a water flow channel 101, and a plurality of diversion columns 103 disposed at intervals are convexly disposed in the water flow channel 101 to guide water flow, so that the water flow can flow through a designated area, and when the first plate 121 and the second plate 122 are connected in a sealing manner, the diversion columns 103 are propped against the second plate 122. In other embodiments, the water flow channel 101 may be formed by recessing one of the sides of the second plate 122 near the first plate 121, where the protruding guide post 103 of the water flow channel 101 abuts against the first plate 121.
The water cooling plate 12 further comprises a first sealing member (not shown) and a second sealing member (not shown), wherein the first sealing member is abutted between the first plate body 121 and the second plate body 122 and is positioned at the outer edge of the water flow channel 101, and the second sealing member is abutted between the flow guiding columns 103 and the corresponding plate body without the water flow channel 101. Specifically, the first sealing member and the second sealing member may be made of a silica gel strip, which surrounds the outer edge of the water flow channel 101 and the guide post 103, to prevent leakage of the water-cooling liquid.
The top surface of the light valve housing 21 directly contacts the first heat dissipating surface 102 on the water cooling plate 12, or contacts the first heat dissipating surface 102 on the water cooling plate 12 through a heat conducting buffer member. Referring to fig. 2 again, in some embodiments, the light valve 22 employs a DMD (Digital Micromirror Device ), the DMD chip reflects the light beam (inactive light) that does not contribute to the current frame image away from the projection lens 24 by rotating the micromirror to reflect the light beam toward the projection lens 24, and reflects the light beam away from the projection lens 24 to the inner wall surface of the light valve housing 21 and absorbs the light beam, the area of the light valve housing 21 for receiving the inactive light reflected by the DMD is a heat generating area 213, and the outer surface of the light valve housing 21 corresponding to the heat generating area 213 is connected to the first heat dissipating surface 102. The micro mirror surface on the DMD deflects to an effective angle to reflect the pixel light corresponding to the bright state in each frame toward the light outlet 212, so as to form effective light 222 for being emitted to the projection lens 24, while the rest of the micro mirror surface deflects to another angle under the control of the circuit, so that the pixel light corresponding to the dark state in each frame is reflected to the inner wall of the light valve housing 21, forming ineffective light 223, so that the ineffective light cannot pass through the light outlet 212 to reach the projection lens 24, the inner wall area irradiated by the light in the dark state is denoted as an ineffective light irradiation area, namely a heat generation area 213, the first heat dissipation surface 102 is abutted against the outer wall surface of the light valve housing 21 corresponding to the heat generation area 213, for example, the first heat dissipation surface 102 on the light valve housing 21 in some embodiments is abutted against the outer wall surface of the light valve housing 21 corresponding to the heat generation area 213, so that the energy of the ineffective light irradiation area with the highest temperature in the light valve housing 21 can be directly transferred to the water cooling plate 12, and the heat brought by the ineffective light 223 can be effectively prevented from being transferred to the water cooling liquid, thereby avoiding the excessive temperature of the light valve housing 21 and the inner space thereof. The first heat dissipating surface 102 may be directly connected to the light valve housing 21, or indirectly connected to the light valve housing through an elastic member such as heat-conducting foam.
In some embodiments, the light valve 22 may include a DMD, an LCOS (Liquid Crystal on Silicon ) or an LCD panel, wherein the LCOS is a novel reflective micro LCD projection technology, and is configured by growing a transistor on a silicon wafer, manufacturing a driving panel (also called CMOS-LCD) by using a semiconductor process, polishing the transistor by using a polishing technology, plating aluminum as a mirror, forming a CMOS substrate, bonding the CMOS substrate to a glass substrate containing a transparent electrode, pumping in the liquid crystal, and performing a packaging test.
Referring to fig. 5, the opto-mechanical assembly 20 further includes a reflective element 221, a light source 23 and a projection lens 24, where the light source 23, the light valve 22 in the light valve housing 21 and the projection lens 24 are sequentially arranged along the optical path, referring to fig. 2, the light valve housing 21 is provided with a light inlet 211 and a light outlet 212, the light inlet 211 is connected to one side of the light source 23, the light outlet 212 is connected to one side of the projection lens 24, and the light beam of the light source 23 enters the light valve housing 21 from the light inlet 211 and is reflected by the reflective element 221 to be irradiated onto the surface of the light valve 22 to implement modulation, and the reflective element 221 is typically a TIR prism, and fig. 2 is only illustrated by a plate-shaped structure. The light valve 22 reflects at least a portion of the effective light toward the reflective element 221 and through the reflective element 221 toward the light exit 212 to reach the projection lens 24. The light source 23 and the light valve 22 are respectively abutted against the heat conversion part 32 to realize rapid heat dissipation. The heat conversion part 32 is formed with micro flow channels, and both ends of the flow channels are respectively connected into the water cooling system 30, so that circulating water flow of the water cooling system 30 can pass through the flow channels and rapidly take away heat of elements connected with the heat conversion part 32.
In the present embodiment, the back surface of the light engine housing where the light source 23 is located and the back surface of the light valve housing 21 where the light valve 22 is located are both attached to the heat conversion portion 32. Specifically, the light source 23 and the projection lens 24 are also disposed in a housing, and the light valve housing 21 is disposed between the housing in which the light source 23 is disposed and the housing in which the projection lens 24 is disposed, and further, the housing in which the light valve housing 21, the light source 23 and the housing in which the projection lens 24 is disposed may be an integrated light machine housing, in which a plurality of chambers are disposed, the light valve 22, the light source 23 and the projection lens 24 are disposed in a chamber, wherein the chambers in which the light valve 22 is disposed form the light valve housing 21, and a large number of rotatable micromirrors are disposed on the working surface of the light valve 22, and the micromirrors face the inside of the light valve housing 21 and are disposed on the light path, so that a large amount of heat is generated and the main projection imaging quality is determined. In the embodiment of the present invention, the light valve housing 21 radiates heat in three ways simultaneously, firstly, referring to fig. 5, the light valve housing 21 is provided with the radiation fins 214, secondly, referring to fig. 6, the light valve housing 21 is abutted against the first radiation surface 102 on the water cooling plate 12, and thirdly, referring to fig. 6, the light valve housing 21 is abutted against the heat conversion portion 32, and the three ways of radiation are combined together, so that the light valve housing 21 radiates heat more efficiently, and adverse effects on the light valve 22 are avoided.
Referring to fig. 6, the water cooling system 30 includes a cold row 31, a heat conversion portion 32, a water pipe 33, a water pump 34, and a fan 35, where the cold row 31, the water pump 34, and the fan 35 are respectively fixed on the bracket 10, and the heat conversion portion 32 abuts against the optomechanical assembly 20, for example, the heat conversion portion 32 may be fixedly mounted on a housing of the optomechanical assembly 20, and abuts against a DMD chip on the optomechanical assembly 20 and a back side of the light source 23, so that heat of the components with high heat generation amounts can be absorbed. The cold row 31, the heat conversion part 32, the water pump 34 and the water flow channel 101 are communicated through the water pipe 33 to form a circulating flow channel, and the air outlet side of the fan 35 faces the cold row 31. Specifically, a large number of water flow micro-channels which are communicated with a water pump 34 and can circulate are arranged in the cold row 31, air holes are arranged on the outer sides of the water flow micro-channels so as to release heat in circulating liquid into air, water outlet holes and water inlet holes are formed in the two ends of the water flow micro-channels, the water outlet holes of the cold row 31 are sequentially connected with a plurality of heat conversion parts 32 through water pipes 33, the heat conversion parts 32 can be abutted against main heating components in an optical machine assembly such as a DMD chip and/or other light sources 23 so as to absorb heat, flow channels are formed in the heat conversion parts 32 so as to pass through water-cooling liquid, the water pump 34 is further connected behind the heat conversion parts 32, the water pump 34 provides circulating power of the liquid in the whole water-cooling system 30, and finally the liquid carries heat to pass through the water Kong Chonghui to cool row 31. The water pipe 33 is, for example, a hose having good elasticity so as to be connected between the respective components in the first installation space. The fan 35 is disposed on one side of the cold row 31 near the surrounding space of the bracket 10, and the air outlet side of the fan 35 faces to the outside of the surrounding space of the bracket 10, so as to blow air to a plurality of air holes of the cold row 31, thereby taking away heat of the cold row 31. It should be noted that the number of the heat conversion parts 32 in the water cooling system 30 may be one, two or more, and the water pump 34 may be connected between the heat conversion parts 32 and the water outlet holes of the cold row 31, or between the heat conversion parts 32 and the water inlet holes of the cold row 31, or between the two heat conversion parts 32 through the water pipe 33. Further, the water pump 34 may also be integrated within the cold row 31.
In this embodiment, the cold row 31, the heat conversion portion 32, and the water pump 34 are all located on the same side of the water cooling plate 12, the water cooling plate 12 is provided with a water inlet pipe 1221 and a water outlet pipe 1222 that are communicated with the water flow channel 101, and the water inlet pipe 1221 and the water outlet pipe 1222 are located on one side of the water cooling plate 12 close to the optical machine assembly 20, wherein each component in the water cooling system 30 is located on the same side of the water cooling plate 12, so that the water pipe 33 can be directly communicated to the water cooling plate 12 on the same side, the length of the water pipe 33 is shortened, and the space occupation of the water pipe 33 is reduced.
Referring to fig. 7, a fixing post 13 is protruded on the bracket 10, and the optical machine assembly 20 is fixed to the fixing post 13 by a fastener such as a screw. The projection device is also provided with a circuit board (not shown), and the optical machine assembly 20, the circuit board, the cold row 31 of the water cooling system 30, the water pump 34 and the fan 35 are all fixed on the bracket 10 and surrounded by the bracket 10. For embodiments including the stand body 11, the core components of the opto-mechanical assembly 20, the circuit board, and the water cooling system 30 may be fixedly mounted on the stand body 11. After the aforementioned components are mounted on the stand 10, the stand 10 is finally integrally mounted in a housing (not shown) of the projection device.
The background section of the present invention may contain background information about the problem or environment of the present invention rather than the prior art described by others. Accordingly, inclusion in the background section is not an admission of prior art by the applicant.
The foregoing is a further detailed description of the invention in connection with specific/preferred embodiments, and it is not intended that the invention be limited to such description. It will be apparent to those skilled in the art that several alternatives or modifications can be made to the described embodiments without departing from the spirit of the invention, and these alternatives or modifications should be considered to be within the scope of the invention. In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "preferred embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope as defined by the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510932351.4A CN120491378A (en) | 2025-07-07 | 2025-07-07 | Projection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510932351.4A CN120491378A (en) | 2025-07-07 | 2025-07-07 | Projection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN120491378A true CN120491378A (en) | 2025-08-15 |
Family
ID=96684960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202510932351.4A Pending CN120491378A (en) | 2025-07-07 | 2025-07-07 | Projection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN120491378A (en) |
-
2025
- 2025-07-07 CN CN202510932351.4A patent/CN120491378A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4227969B2 (en) | Projection display | |
| KR100802725B1 (en) | LCD projectors and their liquid crystal panels and liquid cooling devices | |
| US7084931B2 (en) | Projection video device | |
| CN100520569C (en) | Optical device and projector | |
| US7264359B2 (en) | Cooling apparatus | |
| TWI235278B (en) | Light source device and projector | |
| EP1315028B1 (en) | Projection video device | |
| CN108107656B (en) | Optical devices and projectors | |
| CN100520568C (en) | Optical device and projector | |
| US20040032665A1 (en) | Optical device and projector having the optical device | |
| CN109634031B (en) | Full-sealed liquid crystal projection optical machine device with efficient heat dissipation function | |
| US7130136B2 (en) | Optical modulator holder, optical device, and projector | |
| JP2002006282A (en) | Liquid crystal display | |
| JPWO2005064397A1 (en) | Optical device and projector | |
| CN107430323A (en) | Projecting apparatus | |
| JP4770957B2 (en) | projector | |
| JP4860663B2 (en) | Liquid crystal unit cooling method | |
| JP4048898B2 (en) | Liquid crystal display | |
| CN212623547U (en) | Lighting imaging device of laser projector | |
| JP2006098759A (en) | Liquid crystal projector and its liquid cooling device | |
| CN120491378A (en) | Projection equipment | |
| JP2004198936A (en) | Electro-optical device and projection display device in mounting case, and mounting case | |
| JP4015647B2 (en) | Liquid crystal projector, liquid crystal panel thereof, and liquid cooling device thereof | |
| JP2004021116A (en) | Optical element cooling device, optical device, and projector | |
| CN223347193U (en) | Projection ray apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination |