CN219936268U

CN219936268U - Projection equipment

Info

Publication number: CN219936268U
Application number: CN202321464507.3U
Authority: CN
Inventors: 姚春丽
Original assignee: Goertek Optical Technology Co Ltd
Current assignee: Goertek Optical Technology Co Ltd
Priority date: 2023-06-08
Filing date: 2023-06-08
Publication date: 2023-10-31
Anticipated expiration: 2033-06-08

Abstract

The utility model belongs to the technical field of DLP projection, and particularly relates to projection equipment, which comprises a shell, a projection optical machine fixedly arranged in the shell and a main board, wherein the projection optical machine comprises an optical machine main body and a DMD chip, an installation groove communicated with an inner cavity of the optical machine main body is arranged on the optical machine main body, and the DMD chip is fixedly arranged in the installation groove; the pushing structures electrically connected with the main board are respectively and fixedly arranged on the peripheral side edges of the DMD chip, and the output end of each pushing structure points to the side edge of the corresponding side of the DMD chip. When the conditions of dark bands, poor analysis and the like appear on the projection picture, the main board controls the pushing structures at the peripheral side edges of the DMD chip to act, the DMD chip can be pushed to translate or rotate through the cooperative action of the four pushing structures, the position of the DMD chip can be adjusted without disassembling the projection equipment no matter before the projection equipment is shipped or in the use process of the projection equipment after the projection equipment is shipped, and the problem of inconvenient position adjustment of the DMD chip is solved.

Description

Projection equipment

Technical Field

The utility model belongs to the technical field of DLP projection, and particularly relates to projection equipment.

Background

With the development of technology, DLP (Digital Light Processing ) projection technology is widely used, and many projection devices are imaged by using the DLP projection technology.

The prior projection equipment mainly comprises a shell, a projection optical machine and a main board, wherein the projection optical machine and the main board are fixed in a cavity surrounded by the shell, a DMD (digital micro mirror chip) chip of the projection optical machine is a key device of a DLP projection technology, the DMD chip consists of hundreds of thousands of micro mirrors, light rays from an LED light source can be projected into the DMD chip at a certain angle, the light rays enter a lens to project out a picture after being processed by the DMD chip, and the installation accuracy of the DMD chip has great influence on an imaging effect.

At present, a mounting groove is formed in a light machine body of the projection light machine, a DMD chip is arranged in the mounting groove, a radiator is arranged at the position, corresponding to the DMD chip, of the outer side of the light machine body and used for radiating heat of the DMD chip, and the DMD chip can be pressed. The DMD chip is installed and positioned through the installation groove, and when the DMD chip is not installed in place or the position of the DMD chip is changed in the use process, the imaging effect is affected, for example, dark bands, poor analysis and the like can occur on a projection picture, and the position of the DMD chip is required to be adjusted after the projection equipment is disassembled and assembled, so that the DMD chip is very inconvenient.

Disclosure of Invention

The utility model aims to provide a projection device, which aims to solve the problem that the position adjustment of a DMD chip is inconvenient.

The utility model discloses projection equipment, which comprises a shell, a projection optical machine fixedly arranged in the shell and a main board, wherein the projection optical machine comprises an optical machine main body and a DMD chip, an installation groove communicated with an inner cavity of the optical machine main body is formed in the optical machine main body, and the DMD chip is fixedly arranged in the installation groove; the pushing structures electrically connected with the main board are respectively and fixedly arranged on the peripheral side edges of the DMD chip, and the output end of each pushing structure points to the side edge of the corresponding side of the DMD chip.

As an improvement, each pushing structure comprises a first pushing mechanism and a second pushing mechanism which are arranged at intervals along the side edge of the corresponding side of the DMD chip, and the first pushing mechanism and the second pushing mechanism are respectively and electrically connected with the main board.

As an improvement, the first pushing mechanism and the second pushing mechanism are piezoelectric material blocks, limiting structures are respectively arranged at the end parts of the first pushing mechanism and the second pushing mechanism, which are far away from the DMD chip, and each piezoelectric material block is respectively electrically connected with the main board at the inner side of the piezoelectric material block, which is close to the DMD chip, and at the outer side of the piezoelectric material block, which is far away from the DMD chip.

As an improvement, a first electrode is connected between the ends of the first pushing mechanism and the second pushing mechanism, which are far away from the DMD chip, and a second electrode and a third electrode are respectively arranged at the ends of the first pushing mechanism and the second pushing mechanism, which are close to the DMD chip.

As an improvement, the first pushing mechanism and the second pushing mechanism are respectively provided with a first accommodating groove and a second accommodating groove on the optical machine main body, one end of the first accommodating groove, which is close to the DMD chip, is communicated with the mounting groove, the other end of the second accommodating groove, which is far away from the DMD chip, is a closed end, and the closed ends of the first accommodating groove and the second accommodating groove respectively form the limiting structure.

As an improvement, a communication groove is arranged between the closed end of the first accommodating groove and the closed end of the second accommodating groove.

As an improvement, an edge part extending outwards is arranged at the peripheral side of the DMD chip, a bearing surface corresponding to the edge part is arranged on the optical machine main body at the peripheral side of the mounting groove, and the edge part is pressed onto the bearing surface from the outer side of the optical machine main body.

As an improvement, the edge portions are respectively arranged at two opposite sides of the DMD chip, and the bottom surfaces of the first accommodating groove and the second accommodating groove at the corresponding sides are the bearing surfaces.

By adopting the technical scheme, the projection equipment comprises a shell, a projection optical machine fixedly arranged in the shell and a main board, wherein the projection optical machine comprises an optical machine main body and a DMD chip, the optical machine main body is provided with a mounting groove communicated with an inner cavity of the optical machine main body, and the DMD chip is fixedly arranged in the mounting groove; the pushing structures electrically connected with the main board are respectively and fixedly arranged on the peripheral side edges of the DMD chip, and the output end of each pushing structure points to the side edge of the corresponding side of the DMD chip. During installation, the DMD chip is fixedly installed in the installation groove, and then the radiator is fixedly installed on the outer side of the optical machine main body and is pressed on the DMD chip; when the projection picture has dark bands, poor analysis and other conditions, the main board controls the pushing structures at the peripheral side edges of the DMD chip to act, the DMD chip can be pushed to translate or rotate through the cooperative action of the four pushing structures, and the position of the DMD chip can be adjusted without disassembling the projection equipment no matter before the projection equipment is assembled or after the projection equipment is assembled in the use process of the projection equipment.

Drawings

FIG. 1 is a schematic perspective view of a projection device of the present utility model;

FIG. 2 is an exploded view of the projection device of the present utility model;

FIG. 3 is a schematic diagram of the translational adjustment of the DMD chip of the projection device of the present utility model;

FIG. 4 is a schematic diagram of the rotational adjustment of the DMD chip of the projection device of the present utility model;

FIG. 5 is a schematic diagram of DMD chip adjustment of another embodiment of a projection device of the present utility model;

10, an optical machine main body; 11. a mounting groove; 12. a bearing surface; 13. a first accommodating groove; 14. a second accommodating groove; 15. a communication groove; 20. a DMD chip; 21. an edge portion; 30. a pushing structure; 31. a first pushing mechanism; 32. a second pushing mechanism; 41. a first electrode; 42. a second electrode; 43. a third electrode; 44. an inner electrode; 45. and an external electrode.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Fig. 1 to 5 are schematic structural views of a projection apparatus of the present utility model, in which fig. 1 shows a schematic perspective view of the projection apparatus of the present utility model, fig. 2 shows a schematic exploded structural view of the projection apparatus of the present utility model, fig. 3 shows a schematic view of translational adjustment of a DMD chip of the projection apparatus of the present utility model, fig. 4 shows a schematic view of rotational adjustment of the DMD chip of the projection apparatus of the present utility model, and fig. 5 shows a schematic view of adjustment of the DMD chip of another embodiment of the projection apparatus of the present utility model. For convenience of description, only the parts related to the present utility model are shown in the drawings.

It should be noted that, if directional indications are referred to in the present utility model, such as up, down, front, back, left, right, etc., the directional indications are merely used to explain the relative positional relationship between the components in a certain specific posture, and if the specific posture is changed, the directional indications are correspondingly changed; if the description of "first", "second", etc. is referred to in this disclosure, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.

As can be seen from fig. 1 and 2, the projection device of the present utility model includes a housing, a projection optical engine fixedly mounted in the housing, and a motherboard, the projection optical engine includes an optical engine main body 10, a DMD chip 20, a mounting groove 11 is provided on the optical engine main body 10 and is communicated with an inner cavity of the optical engine main body 10, the DMD chip 20 is fixedly mounted in the mounting groove 11, an array micromirror portion of the DMD chip 20 is inserted into the inner cavity of the optical engine main body 10, pushing structures 30 electrically connected with the motherboard are respectively and fixedly mounted at peripheral sides of the DMD chip 20, and an output end of each pushing structure 30 is respectively directed to a side of a corresponding side of the DMD chip 20; the projection device further comprises a heat sink fixedly mounted on the outside of the light engine body 10 and pressed against the DMD chip 20.

During installation, the DMD chip 20 is fixedly installed in the installation groove 11, and then the radiator is fixedly installed on the outer side of the optical machine main body 10 and is pressed on the DMD chip 20; when the projection picture has the conditions of dark bands, poor analysis and the like, the pushing structures 30 at the peripheral side edges of the DMD chip 20 are controlled by the main board to act, the DMD chip 20 can be pushed to translate or rotate through the cooperative action of the four pushing structures 30, the position of the DMD chip 20 can be adjusted without disassembling the projection equipment no matter before the projection equipment is shipped or in the use process of the projection equipment after the projection equipment is shipped, and the projection equipment solves the problem that the position adjustment of the DMD chip is inconvenient.

In the present utility model, as shown in fig. 1 and 2, each pushing structure 30 includes a first pushing mechanism 31 and a second pushing mechanism 32 disposed at intervals along the side edges of the corresponding side of the DMD chip 20, and the first pushing mechanism 31 and the second pushing mechanism 32 are electrically connected to the main board, respectively; the first pushing mechanism 31 and the second pushing mechanism 32 can be independently operated or simultaneously operated, and the adjustment is more convenient.

Specifically, the first pushing mechanism 31 and the second pushing mechanism 32 are piezoelectric material blocks, and a limiting structure is respectively disposed at the end of the first pushing mechanism 31 and the second pushing mechanism 32 away from the DMD chip 20, and each piezoelectric material block is electrically connected with the motherboard at the inner side of the DMD chip 20 and the outer side of the DMD chip 20. When the position of the DMD chip 20 is deviated, as shown in fig. 3, the main board controls the pushing structure 30 on the corresponding side to act, that is, the first pushing mechanism 31 (the piezoelectric material block) and the second pushing mechanism 32 (the piezoelectric material block) are electrified, and the DMD chip 20 can be pushed to move along the arrow a direction in fig. 3 due to the extension of the piezoelectric material when the piezoelectric material is electrified, so that the deviation is eliminated; when the angle of the DMD chip 20 is tilted, as shown in fig. 4, the main board controls the actions of the two pushing structures 30 at the upper side and the lower side, that is, the second pushing mechanism 32 (the piezoelectric material block) of the pushing structure 30 at the upper side is energized, and the first pushing mechanism 31 (the piezoelectric material block) of the pushing structure 30 at the lower side is energized, so that the DMD chip 20 can be pushed to rotate in the direction of arrow B in fig. 4, and the DMD chip 20 is aligned. As for the position state of the DMD chip 20, the main board determines according to the signal of the projection picture, and the main board analyzes the signal of the projection picture to obtain whether the position of the DMD chip 20 is deviated or inclined, and then the main board controls the corresponding pushing structure 30 to act for adjustment.

In order to facilitate the electrical connection, a first electrode 41 is connected between the ends of the first pushing mechanism 31 and the second pushing mechanism 32 far from the DMD chip 20, and a second electrode 42 and a third electrode 43 are respectively arranged at the ends of the first pushing mechanism 31 and the second pushing mechanism 32 near to the DMD chip 20.

As shown in fig. 2, a first accommodating groove 13 and a second accommodating groove 14 are respectively provided on the optical machine main body 10 corresponding to the first pushing mechanism 31 and the second pushing mechanism 32, one ends of the first accommodating groove 13 and the second accommodating groove 14 close to the DMD chip 20 are communicated with the mounting groove 11, the other ends of the first accommodating groove 13 and the second accommodating groove 14 far away from the DMD chip 20 are closed ends, and the closed ends of the first accommodating groove 13 and the second accommodating groove 14 respectively form a limiting structure. Of course, the limiting structure may be a boss provided on the optical engine body 10. In order to facilitate the arrangement of the first electrode 41, a communication groove 15 is arranged between the closed end of the first accommodating groove 13 and the closed end of the second accommodating groove 14, and the first electrode 41 is clamped in the communication groove 15.

In general, the first electrode 41 may be connected between the ends of the first pushing mechanism 31 and the second pushing mechanism 32 near the DMD chip 20, and the second electrode 42 and the third electrode 43 may be provided at the ends of the first pushing mechanism 31 and the second pushing mechanism 32 far from the DMD chip 20, respectively.

As shown in fig. 2, an edge portion 21 extending outward is provided at the peripheral side of the DMD chip 20, a bearing surface 12 corresponding to the edge portion 21 is provided on the optical bench body 10 at the peripheral side of the mounting groove 11, the edge portion 21 is pressed onto the bearing surface 12 from the outside of the optical bench body 10, and the bearing surface 12 may form a reference surface capable of being positioned in a direction from the outside of the optical bench body 10 toward the inner cavity of the optical bench body 10. Specifically, edge portions 21 are respectively disposed at two opposite sides of the DMD chip 20, and bottom surfaces of the first accommodation groove 13 and the second accommodation groove 14 on corresponding sides are respectively bearing surfaces 12.

In other embodiments, as shown in fig. 5, each pushing structure 30 is a piezoelectric material block, and a limiting structure is disposed at an end of each pushing structure 30 away from the DMD chip 20, and the piezoelectric material block is electrically connected to the main board at an inner side of the DMD chip 20 and an outer side of the DMD chip 20. When the position of the DMD chip 20 is deviated, the main board controls the pushing structure 30 on the corresponding side to act, that is, the pushing structure 30 (piezoelectric material block) is electrified, so that the DMD chip 20 can be pushed to move, and the deviation is eliminated; when the angle of the DMD chip 20 is inclined, the main board controls the actions of the two pushing structures 30 at the upper side and the lower side, that is, the pushing structures 30 at the upper side (piezoelectric material blocks) are electrified, the pushing structures 30 at the lower side (piezoelectric material blocks) are electrified, and the two pushing structures 30 at the upper side and the lower side of the DMD chip 20 act simultaneously, so that the DMD chip 20 can be pushed to rotate along the arrow C direction in fig. 5, and the DMD chip 20 is aligned.

Specifically, the inner electrode 44 and the outer electrode 45 are respectively provided at the inner side of the piezoelectric material block close to the DMD chip 20 and the outer side away from the DMD chip 20.

Of course, the pushing structure 30 may also be an electric cylinder, the cylinder body of which is fixedly mounted on the optical machine main body 10, the output rod of which is disposed toward the DMD chip 20, and a pushing plate is fixedly mounted on the end of the output rod of the electric cylinder, which is close to the DMD chip 20.

The foregoing description of the embodiments of the utility model is not intended to limit the utility model to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. The projection equipment comprises a shell, a projection optical machine fixedly installed in the shell and a main board, wherein the projection optical machine comprises an optical machine main body and a DMD chip, an installation groove communicated with an inner cavity of the optical machine main body is formed in the optical machine main body, and the DMD chip is fixedly installed in the installation groove; the DMD chip is characterized in that pushing structures electrically connected with the main board are respectively and fixedly arranged on the peripheral side edges of the DMD chip, and the output end of each pushing structure points to the side edge of the corresponding side of the DMD chip.

2. The projection device of claim 1, wherein each of the pushing structures includes a first pushing mechanism and a second pushing mechanism disposed at intervals along a side edge of a corresponding side of the DMD chip, the first pushing mechanism and the second pushing mechanism being electrically connected to the main board, respectively.

3. The projection device of claim 2, wherein the first pushing mechanism and the second pushing mechanism are piezoelectric material blocks, and limit structures are respectively arranged at the ends of the first pushing mechanism and the second pushing mechanism, which are far away from the DMD chip, and each piezoelectric material block is respectively electrically connected with the main board at the inner side of the piezoelectric material block, which is close to the DMD chip, and at the outer side of the piezoelectric material block, which is far away from the DMD chip.

4. A projection device as claimed in claim 3, characterized in that a first electrode is connected between the ends of the first and second pushing mechanisms remote from the DMD chip, and a second and third electrode are provided at the ends of the first and second pushing mechanisms close to the DMD chip, respectively.

5. The projection device of claim 3, wherein a first accommodating groove and a second accommodating groove are respectively arranged on the optical machine main body corresponding to the first pushing mechanism and the second pushing mechanism, one ends of the first accommodating groove and the second accommodating groove, which are close to the DMD chip, are communicated with the mounting groove, the other ends of the first accommodating groove and the second accommodating groove, which are far away from the DMD chip, are closed ends, and the closed ends of the first accommodating groove and the second accommodating groove respectively form the limiting structure.

6. The projection apparatus according to claim 5, wherein a communication groove is provided between the closed end of the first accommodation groove and the closed end of the second accommodation groove.

7. The projection apparatus according to claim 5, wherein an edge portion extending outward is provided at a peripheral side of the DMD chip, a bearing surface corresponding to the edge portion is provided on the bare engine body at the peripheral side of the mounting groove, and the edge portion is pressed onto the bearing surface from an outside of the bare engine body.

8. The projection apparatus according to claim 7, wherein the edge portions are provided on opposite sides of the DMD chip, respectively, and groove bottom surfaces of the first accommodation groove and the second accommodation groove on the corresponding sides are the bearing surfaces, respectively.