CN219456713U

CN219456713U - Single-chip liquid crystal projection optical machine and projector

Info

Publication number: CN219456713U
Application number: CN202320117660.2U
Authority: CN
Inventors: 宋乐乐; 江浩; 王成伟; 王雨尧
Original assignee: Formovie Chongqing Innovative Technology Co Ltd
Current assignee: Formovie Chongqing Innovative Technology Co Ltd
Priority date: 2023-01-13
Filing date: 2023-01-13
Publication date: 2023-08-01
Anticipated expiration: 2033-01-13

Abstract

The application relates to a monolithic liquid crystal projector and projector, the monolithic liquid crystal projector includes casing, radiator, LCD screen and sealing member. The inside installation cavity that is provided with of casing, the first side wall of casing be equipped with the intercommunication opening of installation cavity intercommunication. The radiator is arranged at the communication opening and is provided with a mounting surface for covering the communication opening. The liquid crystal screen is installed in the installation cavity, and the liquid crystal screen is provided with a flexible circuit board, and the flexible circuit board is used for stretching out of the shell from a gap between the installation surface and the shell, and the sealing piece is connected between the installation surface and the first side wall of the shell in a sealing mode. In this application, the LCD screen is installed in the installation intracavity, and flexible circuit board stretches out between the installation face of radiator and the first side wall of casing, need not to additionally set up the connector. Therefore, the liquid crystal screen is simpler in sealing on the premise of normal use, and sealing can be completed through the sealing element which is connected between the mounting surface and the first side wall in a sealing manner.

Description

Single-chip liquid crystal projection optical machine and projector

Technical Field

The present disclosure relates to projection optics, and particularly to a single-chip liquid crystal projection optics and a projector.

Background

The single-chip liquid crystal projector is a common projection device, and when the single-chip liquid crystal projector works, light emitted by a light source needs to be processed by an optical device and then projected onto a liquid crystal screen. The liquid crystal screen is generally installed in an installation cavity of a casing of the projection optical machine. The liquid crystal screen needs to be electrically connected with the outside, so that a connecting port is generally required to be additionally arranged on the side wall of the installation cavity of the traditional projection optical machine, and a flexible circuit board on the liquid crystal screen extends out. However, the connection port is difficult to seal, and foreign matters such as dust may enter the mounting cavity from the connection port, thereby affecting the operation of the liquid crystal display.

Disclosure of Invention

Based on this, it is necessary to provide a single-chip liquid crystal projector and a projector aiming at the problem that the additional connection port on the side wall of the installation cavity of the traditional projector is difficult to seal, so that dust and other foreign matters possibly enter the installation cavity from the connection port to affect the work of the liquid crystal screen.

According to a first aspect of the present application, a monolithic liquid crystal projector is presented, the monolithic liquid crystal projector comprising:

the shell is internally provided with an installation cavity, and a first side wall of the shell is provided with a communication opening communicated with the installation cavity;

the radiator is arranged at the communication opening and is provided with a mounting surface covered on the shell;

the liquid crystal screen is arranged in the mounting cavity and is provided with a flexible circuit board, and the flexible circuit board is used for extending out of the shell from a gap between the mounting surface and the shell; and

and the sealing piece is connected between the mounting surface and the first side wall of the shell in a sealing way, and at least part of the sealing piece is abutted against the flexible circuit board.

In one embodiment, at least a portion of the seal is disposed between the flexible circuit board and the mounting surface and/or between the flexible circuit board and the housing, and the seal is in an interference fit with the mounting surface and the housing.

In one embodiment, the seal is disposed around the communication opening.

In one embodiment, the seal comprises an annular foam.

In one embodiment, the flexible circuit board includes a first portion disposed between the first side wall of the housing and the mounting surface and a second portion disposed within the mounting cavity;

the flexible circuit board is provided with a first folding line between the first part and the second part, so that the first part can be folded around the first folding line to be between the mounting surface and the shell.

In one embodiment, the flexible circuit board further comprises a third portion extending out of the housing, and a second fold line is arranged between the first portion and the third portion.

In one embodiment, a plurality of first radiating fins are arranged on one side, close to the mounting cavity, of the radiator, and a plurality of second radiating fins are arranged on one side, away from the mounting cavity, of the radiator; the plurality of first radiating fins are used for extending into the mounting cavity when the radiator is mounted on the shell.

In one embodiment, a light-passing opening communicated with the mounting cavity is formed in the second side wall of the shell, and corresponds to the light-entering surface of the liquid crystal screen;

the single-chip liquid crystal projection optical machine further comprises a light cone support and a light cone, wherein the light cone support is installed at the light passing opening, a light outlet of the light cone support faces the light inlet surface of the liquid crystal screen, and the light cone is installed in the light cone support.

In one embodiment, the light cone bracket is provided with a plurality of heat dissipation holes.

According to a second aspect of the present application, there is further provided a projector further comprising a monolithic liquid crystal projector as described above, the monolithic liquid crystal projector comprising:

and the sealing piece is at least partially abutted against the flexible circuit board and is in sealing connection between the mounting surface and the first side wall of the shell.

In the technical scheme of this application, the casing of monolithic liquid crystal projection ray apparatus does not additionally set up the connector on the lateral wall of installation chamber, but is equipped with the intercommunication opening with installation chamber intercommunication. In this application, the LCD screen is installed in the installation intracavity, and the flexible circuit board of LCD screen stretches out from between the installation face of radiator and the first side wall of casing, consequently need not to set up the connector additionally. The mounting surface cover of the radiator is arranged at the communication opening, so that the single-chip liquid crystal projection optical machine can be sealed by a sealing piece which is connected between the mounting surface and the first side wall of the shell in a sealing way. The communication opening in this application is used for installing the radiator, belongs to conventional setting, therefore monolithic liquid crystal projection ray apparatus does not have additionally to set up the connector, and the LCD screen can be so sealed simpler under the prerequisite of normal use to make the work of LCD screen more stable.

Drawings

FIG. 1 is a schematic diagram of a single-chip liquid crystal projector according to the present disclosure;

FIG. 2 is an exploded view of the single-panel LCD projector of FIG. 1;

FIG. 3 is a schematic diagram illustrating a heat sink assembly of the single-chip LCD projector of FIG. 1;

fig. 4 is a schematic view of another angle of the single-chip lcd projector in fig. 3.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Single-chip liquid crystal projection optical machine	1	Shell body
11	Mounting cavity	12	Communication opening
				13	First side wall	14	A second side wall
15	Light-transmitting opening	2	Radiator
				21	First radiating fin	22	Mounting surface
23	Second radiating fin	3	Liquid crystal screen
				31	Flexible circuit board	311	First part
312	Second part	313	Third part
				314	First folding line	315	Second folding line
4	Sealing element	41	Annular foam

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 the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

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 at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; 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, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via 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 when 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. When 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 are used herein for illustrative purposes only and are not meant to be the only embodiment.

The imaging capability of the liquid crystal screen can be realized by voltage control, so that the liquid crystal screen in the projection optical machine needs to be electrically connected with the outside. The liquid crystal display is generally provided with a flexible circuit board, and the flexible circuit board needs to extend out of an installation cavity of the liquid crystal display so as to be communicated with the outside. Therefore, a connecting port is additionally arranged on the side wall of the mounting cavity on the traditional projection optical machine, so that the flexible circuit board can extend out.

The liquid crystal screen may affect the quality of imaging if it is disturbed by foreign matters such as impurities, and even it may be difficult to normally image, so the mounting cavity needs to have good sealability. However, the connection port for extending the flexible circuit board, which is additionally arranged on the housing of the traditional projection optical machine, can be generally sealed only by spot-coating sealing silica gel, and has the advantages of high sealing difficulty and poor sealing effect.

In view of this, the present application proposes a projector including a single-chip liquid crystal projector. It is understood that any projector including the single-chip liquid crystal projector may be used as the projector. Fig. 1 to fig. 4 are schematic structural diagrams of a single-chip liquid crystal projector according to the present application.

Referring to fig. 1 to 2, a single-chip liquid crystal projector 100 according to the present application, the single-chip liquid crystal projector 100 includes a housing 1, a heat sink 2, a liquid crystal panel 3, and a sealing member 4. The housing 1 is provided with a mounting cavity 11 inside, and a first side wall 13 of the housing 1 is provided with a communication opening 12 communicating with the mounting cavity 11. The radiator 2 is mounted at the communication opening 12, and the radiator 2 has a mounting surface 22 that covers the housing 1. The liquid crystal screen 3 is installed in the installation cavity 11, the liquid crystal screen 3 is provided with a flexible circuit board 31, the flexible circuit board 31 is used for extending out of the shell 1 from a gap between the installation surface 22 and the shell 1, the sealing element 4 is connected between the installation surface 22 and the first side wall 13 of the shell 1 in a sealing mode, and at least part of the sealing element 4 is abutted against the flexible circuit board 31.

In the technical solution of the present application, the housing 1 of the single-chip liquid crystal projector 100 is not provided with a connection port additionally on the side wall of the installation cavity 11, but is provided with a communication opening 12 communicating with the installation cavity 11. In the present application, the liquid crystal panel 3 is mounted in the mounting cavity 11, and the flexible circuit board 31 of the liquid crystal panel 3 extends from between the mounting surface 22 of the heat sink 2 and the first side wall 13 of the housing 1, so that no additional connection port is required. The mounting surface 22 of the heat sink 2 is covered at the communication opening 12, thereby enabling the single-chip liquid crystal projector 100 to complete sealing by the sealing member 4 sealingly connected between the mounting surface 22 and the first side wall 13 of the housing 1. The communication opening 12 in this application is used for installing the radiator, and communication opening 12 is the conventional setting, does not belong to the connector that additionally sets up, consequently monolithic liquid crystal projector 100 does not have the additional connector that sets up, consequently can make sealed simpler under the prerequisite of liquid crystal display 3 normal use to make the work of liquid crystal display 3 more stable.

In some embodiments, at least a portion of the seal 4 is disposed between the flexible circuit board 31 and the mounting surface 22 or between the flexible circuit board 31 and the housing 1, and the seal 4 is interference fit with the mounting surface 22 and the housing 1.

In a specific application, the flexible circuit board 31 protrudes from the housing 1 from the gap between the mounting surface 22 and the housing 1, so that the gap between the housing 1 and the mounting surface 22 becomes larger and the sealing property becomes worse on the peripheral side of the flexible circuit board 31. In this embodiment, therefore, at least part of the sealing member 4 is provided between the flexible circuit board 31 and the mounting surface 22 or between the flexible circuit board 31 and the housing 1, so that the sealability of the peripheral side of the flexible circuit board 31 can be enhanced, and the gap enlarged due to the flexible circuit board 31 can be sealed, thereby ensuring the sealability of the mounting chamber 11, so that the liquid crystal panel 3 operates normally.

In practice, at least part of the seal 4 is provided between the flexible circuit board 31 and the mounting surface 22 and between the flexible circuit board 31 and the housing 1. That is, the sealing member 4 is provided between the flexible circuit board 31 and the mounting surface 22 and between the flexible circuit board 31 and the housing 1, which can make the sealing property between the mounting surface 22 and the first side wall 13 of the housing 1 better. In the specific installation, the sealing element 4 is mutually pressed with the installation surface 22 and the shell 11, so that interference fit is realized, and the sealing element 4 is in sealing connection with the installation surface 22 and the first side wall 13 of the shell 1 through interference fit.

Referring to fig. 2, in some embodiments, the seal 4 is disposed around the communication opening 12. The liquid crystal panel 3 is not only required to be connected to an external control unit through the flexible circuit board 31, but also required to be attached to the heat sink 2, and thus the communication opening 12 is provided. Foreign matter may enter the mounting chamber 11 from the peripheral side of the communication opening 12, and thus in the present embodiment, the seal 4 is provided around the communication opening 12, thereby sealing the communication opening 12.

In some embodiments, the seal 4 comprises an annular foam 41. Specifically, the sealing member 4 may be provided as the annular foam 41, and the shape of the annular foam 41 may be set corresponding to the communication opening 12, so that the annular foam 41 can be disposed around the communication opening 12, thereby sealing the communication opening 12. The annular foam 41 is simple in structure, low in production cost and convenient to detach and replace. In addition, the seal member 4 has various embodiments in specific applications, for example, the seal member 4 may be made of rubber, or made of silica gel, and the seal member 4 can be elastically deformed by these elastic materials when being pressed against the mounting surface 22 and the housing 1, so that an interference fit is achieved, and sealing is completed, so that the specific embodiment of the seal member 4 can be adjusted according to the use requirement.

Referring to fig. 2-4, in some embodiments, the flexible circuit board 31 includes a first portion 311 disposed between the first side wall 13 of the housing 1 and the mounting surface 22 and a second portion 312 disposed within the mounting cavity 11. The flexible circuit board 31 is provided with a first fold line 314 between the first portion 311 and the second portion 312 so that the first portion 311 can be folded around the first fold line 314 between the mounting surface 22 and the housing 1.

In a specific installation, the first portion 311 of the flexible circuit board 31 needs to be attached to the first side wall 13 and the installation surface 22 as much as possible, so that a gap between the first side wall 13 and the installation surface 22 due to the first portion 311 of the flexible circuit board 31 is reduced as much as possible, and the difficulty of sealing is reduced. When the first portion 311 of the flexible circuit board 31 is attached to the first side wall 13 and the mounting surface 22, the seal 4 is mounted between the first portion 311 and the mounting surface 22 or between the first portion 311 and the housing 1, and therefore the seal 4 needs to be sandwiched between the first portion 311 and the mounting surface 22 or between the first side wall 13 and the seal 4.

Therefore, in the present embodiment, the first folding line 314 is disposed between the first portion 311 and the second portion 312, so that the first portion 311 can be folded around the first folding line 314 relative to the second portion 312, so that the first portion 311 can keep fit with the first side wall 13 and the mounting surface 22, and the sealing member 4 can smoothly seal the gap between the first side wall 13 and the mounting surface 22, so that the liquid crystal screen 3 works normally.

Referring to fig. 1 to 4, in some embodiments, the flexible circuit board 31 further includes a third portion 313 protruding out of the housing 1, and a second fold line 315 is disposed between the first portion 311 and the third portion 313. The third portion 313 needs to be connected to the control unit of the projector, and thus the flexible circuit board 31 needs to be provided extending toward the control unit of the projector. In this embodiment, therefore, a second fold line 315 is provided between the first portion 311 and the third portion 313, so that the third portion 313 can be folded with respect to the first portion 311, so that the third portion 313 can extend towards the control unit of the projector for connection therewith.

Referring to fig. 1 to 4, in some embodiments, a plurality of first heat dissipation fins 21 are disposed on a side of the heat sink 2 close to the mounting cavity 11, and a plurality of second heat dissipation fins 23 are disposed on a side facing away from the mounting cavity; the plurality of first heat radiating fins 21 are provided to extend into the mounting cavity 11 when the heat sink 2 is mounted to the housing 1.

The mounting surface 22 of the radiator 2 is covered on the communication opening 12, the plurality of first radiating fins 21 are actually arranged on the mounting surface, and the radiator 2 can radiate heat for the shell 1 through the plurality of first radiating fins 21 on the mounting surface 22, so that functional elements on the shell 1 are at proper working temperature, and normal working of the projection optical machine is ensured. In practice, the mounting cavity 11 is provided with a communication opening 12 in order to facilitate the heat dissipation of the heat sink 2. Of course, when the heat dissipation capacity of the projection light machine is sufficient, the heat sink 2 may also be provided as other functional elements.

In some embodiments, the second side wall 14 of the housing 1 is provided with a light-passing opening 15 that communicates with the mounting cavity 11, and the light-passing opening 15 corresponds to the light incident surface of the liquid crystal screen 3. The single-chip liquid crystal projection optical engine 100 further comprises a light cone bracket and a light cone, the light cone bracket is installed at the light-transmitting opening 15, the light outlet of the light cone bracket is arranged towards the light incident surface of the liquid crystal screen 3, and the light cone is installed in the light cone bracket.

In this application, the light cone holder is mounted in the housing 1, and the light cone is mounted in the light cone holder. In practical application, the light cone bracket has a light outlet and a light inlet which are oppositely arranged, the light emitted by the light source of the single-chip liquid crystal projection light machine 100 can enter the light cone bracket from the light inlet, and the light cone arranged in the light cone bracket can carry out optical shaping on the incident light, so that the shaped light can be emitted from the light outlet. The light-transmitting opening 15 is communicated with the mounting cavity 11, and the light-transmitting opening 15 is arranged corresponding to the light-entering surface of the liquid crystal screen, so that light in the light cone bracket can be emitted onto the light-entering surface of the liquid crystal screen 3, and the liquid crystal screen 3 presents a required image according to the emitted light.

The light cone support can be arranged to be of a funnel-shaped conical tubular structure or a prismatic table-shaped tubular structure in practical application, one end opening with smaller inner diameter on the light cone support can be a light inlet, and one end opening with larger inner diameter is a light outlet. The light inlet with smaller inner diameter can enable light rays emitted by the light source to be more concentrated, and the light outlet with larger inner diameter is arranged corresponding to the liquid crystal screen, so that the light rays after shaping can be emitted into each part of the liquid crystal screen.

In some embodiments, the light cone bracket is provided with a plurality of heat dissipation holes. The light cone may have some degree of heating during shaping and adjustment of the light, which may affect the operational stability of the optical elements in the light cone. Therefore, in this embodiment, the light cone support is provided with a plurality of heat dissipation holes, so as to help the optical element in the light cone dissipate heat, and make the operation of the optical element more stable.

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 merely 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 utility model. 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 single-chip liquid crystal projector, comprising:

2. The single-chip liquid crystal projector of claim 1, wherein at least a portion of the seal is disposed between the flexible circuit board and the mounting surface and/or between the flexible circuit board and the housing, and the seal is in an interference fit with the mounting surface and the housing.

3. The single-chip liquid crystal projector of claim 2, wherein the seal is disposed around the communication opening.

4. The single-chip liquid crystal projector of claim 2, wherein the seal comprises an annular foam.

5. The single-chip liquid crystal projector of claim 1 wherein the flexible circuit board includes a first portion disposed between the first side wall of the housing and the mounting surface and a second portion disposed within the mounting cavity;

6. The single-chip liquid crystal projector of claim 5, wherein the flexible circuit board further comprises a third portion extending out of the housing, and a second fold line is disposed between the first portion and the third portion.

7. The single-chip liquid crystal projector according to claim 1, wherein a plurality of first radiating fins are arranged on one side of the radiator close to the mounting cavity, and a plurality of second radiating fins are arranged on one side of the radiator away from the mounting cavity; the plurality of first radiating fins are used for extending into the mounting cavity when the radiator is mounted on the shell.

8. The single-chip liquid crystal projector according to claim 1, wherein a light-passing opening communicated with the mounting cavity is formed in the second side wall of the housing, and corresponds to the light-entering surface of the liquid crystal screen;

9. The single-chip liquid crystal projector as defined in claim 8, wherein the light cone bracket is provided with a plurality of heat dissipation holes.

10. A projector comprising a single-chip liquid crystal projector according to any one of claims 1 to 9.