CN220603834U

CN220603834U - Projection ray apparatus and projector

Info

Publication number: CN220603834U
Application number: CN202322066608.1U
Authority: CN
Inventors: 宋乐乐
Original assignee: Formovie Chongqing Innovative Technology Co Ltd
Current assignee: Formovie Chongqing Innovative Technology Co Ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2024-03-15
Anticipated expiration: 2033-07-31

Abstract

The application relates to a projection optical machine and a projector. The projection light machine comprises a shell, a lens, a liquid crystal component and a heat absorption structure. The housing is provided with a mounting opening, the lens is mounted at the mounting opening, and the lens comprises a lens for projection. The liquid crystal component is arranged in the shell, and the liquid crystal component, the shell and the lens enclose to define an installation cavity. The heat absorption structure is arranged in the mounting cavity, and the heat conductivity coefficient of the heat absorption structure is larger than that of the lens. Therefore, when the projection optical machine is used, the temperature of the heat absorbing structure is lower than that of other structures, and the condensation phenomenon is more likely to occur on the heat absorbing structure. After the condensation phenomenon occurs on the heat absorption structure, the humidity of the air in the installation cavity can be reduced, so that the condensation is difficult to occur again on other parts in the installation cavity and on the lens, and the projector can be normally used.

Description

Projection ray apparatus and projector

Technical Field

The present disclosure relates to projector technologies, and in particular, to a projector and a projector.

Background

In order to prolong the service life of the internal devices, the projector generally adopts a sealed design, thereby preventing external foreign matters from interfering with the normal operation of the internal devices. While the projector is in use, heat is inevitably generated in the chamber of the projector, and this heat causes the temperature of the air inside the projector to rise. The lens of the projector is generally made of glass, which makes the temperature of the lens relatively low, so that condensation may occur on the lens. However, the conventional projector often has difficulty in solving the condensation phenomenon on the lens of the lens, so that the projection effect of the projector is affected.

Disclosure of Invention

Accordingly, it is necessary to provide a projector and a projector for solving the problem that the projection effect of the projector is affected due to the condensation phenomenon on the lens of the conventional projector.

According to a first aspect of the present application, there is provided a projector comprising:

a shell provided with a mounting port;

the lens is arranged at the mounting opening and comprises a lens;

the liquid crystal component is arranged in the shell, and the liquid crystal component, the shell and the lens are enclosed to define an installation cavity; and

the heat absorption structure is arranged in the mounting cavity; the heat conductivity of the heat absorbing structure is larger than that of the lens.

In one embodiment, along the optical axis direction of the lens, the projection of the lens on the housing is staggered from the projection of the heat absorbing structure on the housing.

In one embodiment, the heat absorbing structure includes a plurality of heat absorbing fins, and the plurality of heat absorbing fins are arranged at intervals.

In one embodiment, each of the heat sink fins is disposed annularly and around the mounting cavity.

In one embodiment, the heat absorbing structure includes a heat absorbing substrate, the heat absorbing substrate is attached to the inner wall of the housing, and the plurality of heat absorbing fins are protruding from the heat absorbing substrate.

In one embodiment, the heat absorbing structure is disposed between the liquid crystal component and the lens along the optical axis direction of the lens.

In one embodiment, an inner thread is provided on an inner wall of the mounting hole, and an outer thread is provided on an outer side of the lens corresponding to the inner thread so as to be screwed with the mounting hole.

In one embodiment, the liquid crystal module comprises a fresnel lens, a liquid crystal screen and a fixing support, the fixing support is mounted on the inner wall of the shell, the fresnel lens and the liquid crystal screen are mounted on two opposite sides of the fixing support respectively, and the fresnel lens is located on one side, close to the mounting cavity, of the fixing support.

In one embodiment, the housing comprises a first housing and a second housing which are in sealing connection, and one part of the heat absorbing structure is arranged on the first housing, and the other part of the heat absorbing structure is arranged on the second housing.

According to a second aspect of the present application, there is also proposed a projector comprising a projection light engine as described above, the projection light engine comprising:

a shell provided with a mounting port;

the lens is arranged at the mounting opening and comprises a lens;

In the technical scheme of this application, projection ray apparatus encloses through casing, camera lens and liquid crystal module and closes and form the installation cavity to be equipped with heat absorption structure in the installation cavity. The heat conductivity of the heat absorbing structure is greater than that of the lens, so that when the temperature of the air in the mounting cavity rises, the temperature of the heat absorbing structure does not change much relative to other structures. Therefore, after the projection light machine is used for a period of time, the temperature of the heat absorbing structure is lower than that of other structures, and the condensation phenomenon is more likely to occur on the heat absorbing structure. After condensation occurs on the heat absorbing structure, the humidity of the air in the mounting cavity is reduced, so that condensation is difficult to occur again on other parts in the mounting cavity and on the lens.

In addition, the heat absorption structure can absorb heat in the installation cavity, so that the temperature of air in the installation cavity and the temperature of other elements are not too high, and the temperature difference between the lens and the air in the installation cavity is also smaller, so that the condensation phenomenon on the lens of the lens is restrained, and the projector can be normally used.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a projection light machine according to the present application.

Fig. 2 is a schematic diagram of a structure of the projection light machine in fig. 1 in another state.

Fig. 3 is a schematic structural view of the first housing in fig. 1.

Reference numerals illustrate:

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, 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 at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

The inventors of the present application found from studies that, in the conventional projector, the internal space of the mounting chamber in which the lens is mounted is relatively small, which makes it often difficult to mount the heat absorbing structure in the mounting chamber. Therefore, the temperature of the air and the temperature of the components in the mounting chamber gradually rise with the use of the projector. The lens of the lens is generally made of glass, which makes the temperature of the lens rise relatively slowly, so that a temperature difference occurs between the lens of the lens and other components and air, and a condensation phenomenon may occur on the lens of the lens.

In view of this, the present application provides a projection optical engine, and aims to solve the problem that the conventional projection optical engine is often difficult to solve the condensation phenomenon on the lens of the lens, resulting in the influence on the projection effect of the projector. Fig. 1 to fig. 3 are schematic structural diagrams of an embodiment of a projection light machine according to the present application.

Referring to fig. 1 to 3, a projector 100 according to the present application includes a housing 1, a lens 2, a liquid crystal module 3, and a heat absorbing structure 4. The housing 1 is provided with a mounting opening 14, the lens 2 is mounted on the mounting opening 14, and the lens 2 includes a lens 22. The liquid crystal component 3 is mounted in the housing 1, and the liquid crystal component 3, the housing 1 and the lens 2 define a mounting cavity 13. The heat absorbing structure 4 is arranged in the mounting cavity 13; the heat absorbing structure 4 has a thermal conductivity greater than that of the lens 22.

In the technical solution of the present application, the projection light machine 100 forms a mounting cavity 13 by enclosing the housing 1, the lens 2 and the liquid crystal module 3, and a heat absorbing structure 4 is disposed in the mounting cavity 13. The heat conductivity of the heat absorbing structure 4 is greater than that of the lens 22, which allows the temperature of the heat absorbing structure 4 not to vary much from the other structures when the temperature of the air in the mounting cavity 13 increases. Therefore, after the projection light machine 100 is used for a period of time, the temperature of the heat absorbing structure 4 is lower than that of other structures, so that the condensation phenomenon on the heat absorbing structure 4 is more likely to occur. When condensation occurs on the heat absorbing structure 4, the humidity of the air in the installation cavity 13 is reduced, so that condensation is difficult to occur again on other parts in the installation cavity 13 and on the lens 22.

In addition, the heat absorbing structure 4 can absorb heat in the mounting cavity 13, so that the temperature of air in the mounting cavity 13 and the temperature of other elements are not too high, and the temperature difference between the lens 22 and the air in the mounting cavity 13 is also smaller, so that the condensation phenomenon on the lens 22 of the lens 2 is restrained, and the projector can be normally used.

The heat absorbing structure 4 is generally not included in the conventional projection light engine 100 because of the limited space within the mounting cavity 13. In addition, the heat absorbing structure 4 may also block the light entering the lens 22 of the lens 2, which affects the normal use of the projector. Therefore, in some embodiments of the present application, along the optical axis direction of the lens 22, the projection of the lens 22 on the housing 1 is staggered from the projection of the heat absorbing fins 41 on the housing 1, and the heat absorbing structure 4 does not block light from entering the lens 22, so that the heat absorbing structure 4 can inhibit condensation of the lens 22 without affecting the operation of the lens 2, thereby making the projection effect of the projection optical engine 100 better.

In some embodiments, the heat absorbing structure 4 includes heat absorbing fins 41. Specifically, the heat sink fins 41 are made of a material having a high thermal conductivity, such as aluminum, copper, or silver. When the projection light machine 100 is used, the temperature change of the heat absorbing fins 41 is smaller than that of the lens 22 of the lens 2, so that the condensation phenomenon directly occurs on the heat absorbing fins 41. In addition, the heat absorbing fins 41 are generally multiple and spaced apart from each other, so that air in the mounting cavity 13 can be sufficiently condensed on the heat absorbing fins 41, which reduces the humidity of air in the mounting cavity 13, and other parts in the mounting cavity 13 are difficult to generate condensation.

In some embodiments, the heat absorbing structure 4 includes a plurality of heat absorbing fins 41, and the plurality of heat absorbing fins 41 are arranged in parallel and at intervals. The plurality of heat absorbing fins 41 arranged in parallel and at intervals further increases the contact area with the air, which can sufficiently condense the moisture in the air in the mounting cavity 13 on the heat absorbing fins 41, further suppressing the condensation phenomenon on other elements. In addition, the plurality of heat absorption fins 41 are more freely arranged than the single heat absorption fin 41 with larger size, and the plurality of heat absorption fins 41 can avoid the light rays entering the lens 22 more simply.

In some embodiments, each heat sink fin 41 is disposed in an annular shape and is disposed around the mounting cavity 13. The heat absorbing fins 41 are arranged in a ring shape around the mounting cavity 13, which enables the heat absorbing fins 41 to be in contact with the air in each region of the mounting cavity 13, thereby absorbing heat in the mounting cavity 13 relatively uniformly and avoiding overheating of part of the region.

In some embodiments, the heat absorbing structure 4 includes a heat absorbing substrate 42, the heat absorbing substrate 42 is adhered to the inner wall of the housing 1, and the plurality of heat absorbing fins 41 are protruding on the heat absorbing substrate 42.

The heat absorbing structure 4 is mounted on the inner wall of the shell 1 through the heat absorbing substrate 42, and the air in the mounting cavity 13 is fully condensed through the plurality of heat absorbing fins 41, so that moisture in the air in the mounting cavity 13 is reduced, and condensation cannot be found at other positions in the mounting cavity 13. In addition, the heat absorbing substrate 42 and the heat absorbing fins 41 can be integrally formed, so that the heat absorbing structure 4 is simpler to install.

The light enters the mounting cavity 13 through the liquid crystal component 3, and then enters the lens 2 after being reflected. The light enters and other components generate heat, and the heat is generally concentrated between the liquid crystal assembly 3 and the lens 2, so that in some embodiments, the heat absorbing structure 4 is disposed between the liquid crystal assembly 3 and the lens 2 along the optical axis direction of the lens 22. The heat absorbing structure 4 can absorb heat between the liquid crystal assembly 3 and the lens 2, so as to avoid a large temperature difference between the lens 22 and air in the mounting cavity 13.

In addition, the heat absorbing structure 4 is actually disposed to prevent the lens 22 from condensation, so the heat absorbing structure 4 is disposed between the liquid crystal module 3 and the lens 2, and the heat absorbing structure 4 can absorb heat in air around the lens 2, thereby pertinently suppressing the condensation on the lens 22.

When the heat absorbing structure 4 is too close to the lens 2, the heat absorbing structure 4 may affect the normal operation of the lens 2. When the distance between the heat absorbing structure 4 and the lens 2 is too long, it may be difficult for the heat absorbing structure 4 to absorb heat near the lens 2, resulting in that the lens 2 may be subject to a condensation phenomenon. Therefore, in some embodiments, there is a preset distance between the heat absorbing structure 4 and the lens 2 along the optical axis direction of the lens 2. Specifically, the preset distance between the heat absorbing structure 4 and the lens 2 needs to be set according to the lens 2, and when the back focal length of the lens 2 is different, the preset distance needs to be adjusted correspondingly. The present application is therefore not particularly limited herein.

In an embodiment of the present application, the inner wall of the mounting opening 14 is provided with an internal thread 141, and the outer side of the lens 2 is provided with an external thread 21 corresponding to the internal thread 141 so as to be screwed with the mounting opening 14, thereby mounting the lens 2 on the corresponding mounting opening 14. In the present embodiment, the lens 2 is directly mounted to the housing 1 by screwing, so that the mounting operation is very convenient, but this does not indicate that the lens 2 can only be mounted to the housing 1 by screwing. In practice, the lens 2 may also be mounted to the housing 1 by means of a snap-fit connection.

In addition, in another embodiment of the present application, the liquid crystal assembly 3 includes a fresnel lens 32, a liquid crystal screen and a fixing bracket 31, the fixing bracket 31 is mounted on the inner wall of the housing 1, the fresnel lens 32 and the liquid crystal screen are respectively mounted on two opposite sides of the fixing bracket 31, and the fresnel lens 32 is located on one side of the fixing bracket close to the mounting cavity.

Specifically, the opposite sides of the fixing support 31 are provided with mounting steps corresponding to the fresnel lens 32 and the liquid crystal display respectively, so that the fresnel lens 32 and the liquid crystal display can be mounted on the corresponding mounting steps respectively, and the fresnel lens 32 is located at one side of the fixing support close to the mounting cavity. In practice, the liquid crystal assembly 3 cooperates with the lens 2 and the housing 1 by means of the fixing bracket 31, the fresnel lens 32, defining the mounting cavity 13. The liquid crystal assembly 3 separates the mounting cavity 13 from other chambers within the housing 1.

Of course, the implementation of the projection light machine 100 in the above embodiment does not conflict with the implementation of the liquid crystal module 3, so the projection light machine 100 may simultaneously set the lens 2 and the liquid crystal module 3 in the above embodiment.

Referring to fig. 2 to 3, in some embodiments, the housing 1 includes a first housing 11 and a second housing 12 that are connected in a sealing manner, and a part of the heat absorbing structure 4 is disposed on the first housing 11, and another part is disposed on the second housing 12.

Specifically, the housing 1 is composed of a first housing 11 and a second housing 12 in sealing connection. In a specific application, a worker may first install the internal components on the first housing 11 and the second housing 12, then install a part of the heat absorbing structure 4 on the first housing 11, install another part of the heat absorbing structure 4 on the second housing 12, and finally seal-connect the first housing 11 and the second housing 12, thereby sealing the installation cavity 13. When the housing 1 is divided into the first housing 11 and the second housing 12, the installation of the internal components of the projector is relatively simple.

The present application also proposes a projector comprising the projector 100 according to any of the embodiments described above. The projector can solve the problem of condensation of the lens 2 through the projection optical machine 100, and the projection effect is more stable during use.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. A projection light engine, comprising:

a shell provided with a mounting port;

the lens is arranged at the mounting opening and comprises a lens;

2. The projection light engine of claim 1, wherein the projection of the lens onto the housing is offset from the projection of the heat absorbing structure onto the housing along the optical axis of the lens.

3. The projection light engine of claim 1, wherein the heat absorbing structure comprises a plurality of heat absorbing fins, and the plurality of heat absorbing fins are arranged at intervals.

4. The projection light engine of claim 3, wherein each of the heat sink fins is disposed in a ring shape and surrounds the mounting cavity.

5. The projection light engine of claim 3, wherein the heat absorbing structure further comprises a heat absorbing substrate, the heat absorbing substrate is attached to the inner wall of the housing, and the plurality of heat absorbing fins are protruding from the heat absorbing substrate.

6. The projection light engine of claim 1, wherein the heat absorbing structure is disposed between the liquid crystal module and the lens along an optical axis direction of the lens.

7. The projection light engine of claim 1, wherein an inner wall of the mounting opening is provided with an inner thread, and an outer side of the lens is provided with an outer thread corresponding to the inner thread so as to be in threaded connection with the mounting opening.

8. The projection light engine of claim 1, wherein the liquid crystal module comprises a fresnel lens, a liquid crystal screen and a fixing bracket, the fixing bracket is mounted on the inner wall of the housing, the fresnel lens and the liquid crystal screen are respectively mounted on two opposite sides of the fixing bracket, and the fresnel lens is located on one side of the fixing bracket close to the mounting cavity.

9. The projection light engine of claim 1, wherein the housing comprises a first housing and a second housing that are sealingly connected, and a portion of the heat absorbing structure is disposed in the first housing and another portion is disposed in the second housing.

10. A projector comprising a projection light engine as claimed in any one of claims 1 to 9.