TWI651579B - Projector and its optical fixture - Google Patents

Abstract

A projector and an optical-mechanical fixing device thereof belong to the field of light guide. The device comprises: an optical-mechanical cover (1), which has a cavity for accommodating the optical-machine (4), and has two first end faces (11), Two end faces (12), three sides parallel to the central axis of the optical machine, and a first opening (13). The first opening (13) is used to fit the optical machine (4), and the first end face (11) is provided with a second The opening (11a), the second end surface (12) is provided with a third opening (12a), the area of the second opening (11a) is smaller than the area of the first end surface (11), and the area of the third opening (12a) is smaller than the area of the second end surface (12) area; the clamping element (2) includes a clamping portion and a connecting portion at an end of the clamping portion, the clamping portion surrounds and holds the optical machine cover (1), and the connecting portion is used for projection The casing is fixedly connected.

Description

Projector and its optical-mechanical fixing device

The invention relates to the field of light guiding, and in particular, to a fixing device for a projector light machine and a projector.

A projector is a device that can project an image or video onto the screen. It can be connected to a computer, VCD, DVD, BD, game console, DV, etc. through different interfaces to play the corresponding video signal to achieve a large screen projection display. Way to provide viewers with excellent presentation and visual effects. With the development of electronic technology, projectors are widely used in education, business and home. According to the different working principles of the projector, it can be divided into cathode ray tube projector (CRT), liquid crystal projector (LCD) and digital optical processing projector (DLP). Among them, the imaging principle of the digital optical processor projector is: the light emitted by the optics is transmitted to the digital microscope in the open state through multiple optical elements and converted into imaging optics. Large screen and provide sufficient brightness.

The optical element light machine (Light Pipe, LP for short) in a DLP projector needs to be fixed. When the light machine runs, it will cause abnormal picture and lower contrast, which will affect the imaging quality. Although there are some devices for fixing the light machine in the prior art, However, there are problems such as complex fixing methods, insecure fixing, long process cycles or high costs. For example, FIG. 1 is a schematic structural diagram of an optical-mechanical fixing device in the prior art. As shown in FIG. 1, the device includes a light machine cover 1 ′ and a cover 5. The rear end of the light machine cover 1 ′ is provided with an opening 16, and the light machine cover is provided with a plurality of dispensing portions 17. When the light machine 4 needs to be fixed, the light machine 4 is loaded from the opening 16 of the light machine cover 1 ', and the UV glue point is performed at the place where the dispensing portion 17 and the light machine cover 1' are in partial contact. After the glue dispensing process, the cover 5 is then mounted to the optical machine cover 1 'at the opening 16 of the optical machine cover 1', covering the end of the optical machine cover 1 ', and finally The opto-mechanical cover 1 'is clamped by a clamping element, and then placed on the DLP projector housing. Although the structure of the fixing device is simple, due to the long cycle of the UV glue dispensing process, the quality is unstable, and the LP position varies with the drop of the vibration. Secondly, when the amount of UV dispensing is too large, it will interfere with the external clamping component, causing Insufficient fixing and other problems; In addition, due to the fixing method of the cover 5 dispensing, the cover 5 has a risk of backwardness, or the cover 5 may be deformed, which may cause the light path to be blocked.

According to a first aspect of the present invention, a projector light machine fixing device is provided. The device includes: a light machine cover, which has a cavity for accommodating the light machine, and two peripherals with the light machine at the periphery of the cavity. The first end surface, the second end surface perpendicular to the central axis, the three side surfaces parallel to the optical axis of the optical machine, and the first opening. The central axis direction of the optical machine is the first direction, and the first and second end surfaces are both In a second direction perpendicular to the first direction, the three sides are in the first direction, and the first opening is used for loading. In the optical machine, the first end surface is provided with a second opening, the second end surface is provided with a third opening, and the second opening and the third opening are both regular geometric shapes, and the second opening and The geometric centers of the third openings are all in the first direction, the area of the second opening is smaller than the area of the first end surface, and the area of the third opening is smaller than the area of the second end surface; The holding element includes a clamping portion and a connecting portion at an end of the clamping portion. The clamping portion surrounds and clamps the optical machine cover, and the connecting portion is used for fixed connection with the projector housing. The clamping portion includes a first clamping portion, a second clamping portion, and a third clamping portion. The first clamping portion and the third clamping portion are located opposite to the second clamping portion. On both sides, the first clamping portion and the third clamping portion clamp the optical machine cover in the second direction, and the first clamping portion is provided with a first clamping portion, The first clamping portion abuts the optical machine at the third opening.

Preferably, the first clamping portion further has a second clamping portion, and the first clamping portion and the second clamping portion are respectively disposed at both ends of the first clamping portion, and the first Two clamping portions abut the optical machine at the third opening.

Preferably, the optical machine cover is further provided with a first pressing portion and a second pressing portion, and the first pressing portion and the second pressing portion are respectively located in the three side surfaces. On the upper side and the lower side, the first pressing portion and the second pressing portion both press the optical machine in a third direction perpendicular to the first direction and the second direction; the first The two clamping portions are provided with a third clamping portion, and the third clamping portion is pressed downward in the third direction; the third clamping portion is provided with a fourth clamping portion, and the fourth The urging direction of the clamping portion is the same as the urging direction of the third clamping portion.

Preferably, the first pressing portion, the second pressing portion, the first clamping portion, the second clamping portion, the third clamping portion, and / or the fourth clamping portion Using elastic elements.

Preferably, the connection portion includes a first connection portion and a second connection portion, the first connection portion is fixedly connected to the first clamping portion, and the second connection portion is fixed to the third clamping portion connection.

Preferably, the first connection portion is provided with a first buckle structure, and the second connection portion is provided with a threaded hole.

Preferably, the device further comprises a baffle for cooperating with the second end surface, the baffle is provided with a fourth opening, and the geometric center of the fourth opening is in the first direction An area of the fourth opening is smaller than an area of the second end surface, the baffle is further provided with a third pressing portion, a second buckle structure, and a threaded hole, and the third pressing portion and the The second buckle structures are respectively located at the upper and lower opposite ends of the baffle, and the third pressing portion is pressed downward in the third direction.

Preferably, an end of the baffle plate is further provided with a fifth clamping portion, which is located at the left end of the baffle plate, and the force applying direction of the fifth clamping portion is along the second direction.

Preferably, the third pressing portion or the fifth clamping portion adopts an elastic element.

According to a second aspect of the present invention, a projector is provided. The projector includes the projector optical-mechanical fixing device according to any one of the technical solutions described in the first aspect, and the optical machine is located in the optical-mechanical cover. In the cavity, the connection portion is fixedly connected to the projector housing.

The technical solution provided by the embodiment of the present invention has the beneficial effects that the projector optical machine fixing device and the projector provided by the embodiment of the present invention adopt the optical machine cover with a side opening structure and a clamp with an additional clamping portion. The component solves the running problem of the light machine without the need to dispense the light machine and the cover of the light machine, and fixes it more firmly. At the same time, it solves the problems of long dispensing process cycle and poor operating elasticity. In addition, there is no need to wrap the cover on one end of the optical machine cover, which avoids the problem of light shielding caused by the cover from receding or deforming, thereby improving the picture quality of the projector. In addition, the projector optical machine fixing device provided by the embodiment of the present invention also has the characteristics of simple structure, convenient use, and low cost.

In order to have a better understanding of the above and other aspects of the present invention, the following specific examples are described in detail below in conjunction with the accompanying drawings:

1, 1’‧‧‧ Optical machine cover

2‧‧‧ clamping element

3‧‧‧ bezel

4‧‧‧ Optical Machine

5‧‧‧ cover

11‧‧‧first end face

11a‧‧‧Second opening

12‧‧‧ second end face

12a‧‧‧Third opening

13‧‧‧ the first opening

14‧‧‧The first pressing part

15‧‧‧Second pressure section

16‧‧‧ opening

17‧‧‧ Dispensing Department

21‧‧‧First clamping section

21a‧‧‧First clamping section

21b‧‧‧Second clamping section

22‧‧‧Second clamping section

22a‧‧‧Third clamping part

23‧‧‧ the third clamping section

23a‧‧‧Fourth clamping part

24‧‧‧First connecting section

24a‧‧‧Snap structure

25‧‧‧Second connection section

25a‧‧‧Threaded hole

31‧‧‧ fourth opening

32‧‧‧The third pressing section

33‧‧‧Second snap structure

34‧‧‧Threaded hole

35‧‧‧Fifth clamping part

FIG. 1 is a schematic structural diagram of a projector optical machine fixing device in the prior art; FIG. 2 is a schematic structural diagram of an optical machine cover in the projector optical machine fixing device according to an embodiment of the present invention; and FIG. FIG. 4 is a schematic structural diagram of a clamping element in a projector optical machine fixing device according to an embodiment of the present invention; FIG. 4 is a schematic structural diagram of a baffle in a projector optical machine fixing device according to an embodiment of the present invention; FIG. 5 is a schematic diagram of the overall structure of the projector optical machine fixing device and the optical machine after assembly according to an embodiment of the present invention; FIG. 6 is an exploded structure diagram of FIG. 5; and FIG. 7 is a projector provided by an embodiment of the present invention The schematic diagram of the state that the optical-mechanical fixing device is installed on the projector casing.

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are merely Some embodiments of the present invention are not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The projector light machine fixing device provided by the embodiment of the present invention mainly includes a light machine cover and a clamping element. A side opening structure of the light machine cover and a clamping portion are provided on the clamping element. The light machine cover is used. Used in conjunction with the clamping element, it can effectively fix the light machine and solve the running problem of the light machine. It has the advantages of simple structure, convenient use, and easy production. It can be widely used for fixing the light machine in the field of light guide. In operation.

The projector optical machine fixing device according to the embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 2 is a schematic structural diagram of a light machine cover in a projector light machine fixing device according to an embodiment of the present invention. FIG. 3 is a diagram of an investment provided by an embodiment of the present invention. Schematic diagram of the structure of the clamping element in the camera-optical machine fixing device. FIG. 4 is a schematic structural diagram of a baffle in a projector optical-mechanical fixing device according to an embodiment of the present invention. The x-axis is a first direction, the y-axis is a second direction, and the z-axis is a third direction.

As shown in FIG. 2 and FIG. 3, the projector optical machine fixing device provided by the embodiment of the present invention mainly includes an optical machine cover 1 and a clamping element 2.

Specifically, as shown in FIG. 2, the optical-mechanical cover 1 has a cavity for accommodating the optical machine 4, and there are two first end faces 11 and Two end faces 12, three side faces parallel to the central axis of the optical machine 4, and a first opening 13. The central axis direction of the optical machine 4 is the x-axis direction, the first end surface 11 and the second end surface 12 are along the y-axis perpendicular to the first direction x-axis, and the three side surfaces are along the first direction x-axis. The first opening 13 is used for receiving the optical machine 4. The first end surface 11 is provided with a second opening 11a, and the second end surface 12 is provided with a third opening 12a. Among them, the second opening 11a and the third opening 12a are regular geometric shapes, such as square, circle, regular hexagon, etc., the geometric centers of the second opening 11a and the third opening 12a are on the x-axis, and the second opening 11a Is smaller than the area of the first end surface 11 and the area of the third opening 12a is smaller than the area of the second end surface 12 for providing a path for the light emitted by the optical machine 4 in the cavity, and the size of the two opening areas can be designed as required; The first opening 13 is a full-opening structure, and is used for loading the optical machine 4 into the optical machine cover 1. In addition, the optical-mechanical cover 1 may be provided with other openings or functional parts as required.

As shown in FIG. 3, the clamping element 2 includes a clamping portion and a connecting portion at an end portion of the clamping portion. The clamping portion surrounds and holds the optical machine cover 1. The connecting portion is used to fix the projector casing. connection. Specifically, the clamping portion includes a first clamping portion 21, a first Two clamping portions 22 and a third clamping portion 23, the first clamping portion 21 and the third clamping portion 23 are located on opposite sides of the second clamping portion 22, and the first clamping portion 21 and the third clamping portion 23 all hold the optical machine cover 1 along the y-axis. After the clamping element 2 is mounted on the optical-mechanical cover 1, the first clamping portion 21 and the third clamping portion 23 respectively apply a force to the optical-machine cover 1 in the y-axis direction; or The holding portion 21 applies a force to the optical machine cover 1 in the y-axis direction, and the second clamping portion 22 applies a force to the optical machine cover 1 in the z-axis direction; or, the second clamping portion 22 is A force is applied to the optical-mechanical cover 1 in the z-axis direction, and the third clamping portions 23 apply an force to the optical-machine cover 1 in the y-axis direction, respectively. In addition, the first clamping portion 21 is provided with a first clamping portion 21 a, and the first clamping portion 21 a abuts the optical machine 4 at the first opening 13. Such an arrangement can make the first clamping portion 21 The pressing force is further increased, so that the entire clamping element 2 firmly fixes the optical machine 4 and the optical machine cover 1 outside the optical machine 4.

According to the orientation of the first opening 13 of the optical-mechanical cover 1 already installed in the optical-mechanical device 4, the optical element cover 1 can be fixed in various ways by the clamping element 2. For example, the first opening 13 of the optical-mechanical cover 1 may face the first clamping portion 21 of the clamping element 2, the first clamping portion 21a exerts pressure on the optical mechanism 4, and the clamping element 2 may The cover 1 and the optical machine 4 are firmly fixed; the first opening 13 of the optical machine cover 1 may also face the second clamping portion 22 or the third clamping portion 22 of the clamping element 2 at this time. The portion 21 a applies pressure to the optical machine cover 1.

In the prior art, the optomechanical cover has a structure with an opening at the tail, and a cover needs to be installed at the open end, and the optomechanical in the cavity and the cover and the optomechanical cover are fixed with UV glue. Dispensing, unstable quality, Problems such as long process cycles, for example, when the external part of the optical machine is subjected to external forces (such as vibration or drop), the position of the optical machine may mutate or run, causing problems such as abnormal screens on the projector, and when dispensing Improper measurement will also cause interference with the clamp, and because the cover is closed without opening the end of the optical machine cover, the position where the cover is positioned will change (such as backward or misaligned). It is prone to problems such as blocking light, which will also affect the picture quality of the projector. In the optical-mechanical fixing device provided by the embodiment of the present invention, since the optical-mechanical cover 1 has a side opening structure, both end surfaces are respectively formed as closed ends with partial openings, and the tail of the optical-mechanical cover 1 and the optical machine are The other parts of the cover 1 are integrated into one body, avoiding the use of the tail cover, so that there are no problems such as rearward retreat and position change, and the light machine cover and the clip that can surround and hold the light machine cover 1 The holding element 2 is used in cooperation to achieve effective fixation of the light machine, cancel the dispensing process, avoid long-term glue baking operations, and solve the abnormality of the projection screen caused by the light machine's prone movement and cover changes. problem.

Preferably, the first clamping portion 21 further includes a second clamping portion 21b, and the first clamping portion 21a and the second clamping portion 21b are respectively disposed at both ends of the first clamping portion 21, and the second clamping portion 21b Abut the optical machine 4 at the first opening 13.

Preferably, the optical-mechanical cover 1 is further provided with a first pressing portion 14 and a second pressing portion 15, and the first pressing portion 14 and the second pressing portion 15 are respectively located on the three side surfaces. On the side and the lower side, the first pressing portion 14 and the second pressing portion 15 abut the calender 4 along the z-axis; the second clamping portion 22 is provided with a third clamping portion 22a, and the third clamping portion 22a extends along the z axis. The z-axis perpendicular to the x-axis and the y-axis are pressed downward; A fourth clamping portion 23a is provided. The urging direction of the fourth clamping portion 23a is the same as that of the third clamping portion 23. The third clamping portion 22a faces the optical machine 4 or the optical machine in the z-axis direction. The covering member 1 exerts an acting force, and the fourth clamping portion 23 a applies an acting force to the optical machine 4 or the optical machine covering member 1 in the y-axis direction. A first pressing portion 14 and a second pressing portion 15 are added to the optical machine cover 1, and a second clamping portion 22 a and a fourth clamping portion 22 are added to the second clamping portion 22 and the third clamping portion 23 of the clamping element 2. The clamping portion 23 a makes the entire optical-mechanical fixing device more firmly fix the optical-mechanical device 4.

Preferably, the first pressing portion 14, the second pressing portion 15, the first clamping portion 21a, the second clamping portion 21b, the third clamping portion 22a, and the fourth clamping portion 23a here may be all or part of Made of elastic elements, such as springs. Such a structural setting can make the clamping element 2 have a good fixing effect, and has the characteristics of flexible installation and removal.

The connection portion includes a first connection portion 24 and a second connection portion 25. The first connection portion 24 is fixedly connected to the first clamping portion 21, and the second connection portion 25 is fixedly connected to the third clamping portion 23. After the clamping element 2 clamps and fixes the optical machine cover 1 with the optical machine 4, the first connecting portion 24 and the second connecting portion 25 are used for fixing the clamping element 2 on the projector housing. The first connection portion 24 and the second connection portion 25 can be fixed to the projector housing in various ways, as long as the purpose of fixing is achieved, for example, screw connection, snap connection, welding, etc. Moreover, the embodiments of the present invention are not limited thereto.

Preferably, the first connecting portion 24 is provided with a first buckle structure 24a, and the buckle structure 24a is a bayonet, and the bayonet may correspond to a corresponding one provided on the projector housing. The fasteners are assembled to fix the clamping element 2 on the projector housing. The second connection portion 25 is provided with a threaded hole 25a, and the second connection portion 25 can be fixedly connected to a corresponding portion of the projector casing by screws or bolts and the threaded hole 25a. In addition, the buckling structure 24a may also be a buckle, which can be assembled with a corresponding bayonet provided on the projector housing, so as to fix the clamping element 2 on the projector housing.

Preferably, the first connecting portion 24 and the first clamping portion 21 are integrally formed, and the second connecting portion 25 and the third clamping portion 23 are integrally formed. Such a mechanism design can simplify the manufacturing process, thereby reducing manufacturing costs, and has an excellent shape.

In addition, preferably, as shown in FIG. 4, the projector optical machine fixing device according to the embodiment of the present invention further includes a baffle 3, and the baffle 3 is configured to cooperate with the second end surface 12 of the optical machine cover 1. When fixing, the baffle plate 3 can fit the second end surface 12. The baffle plate 3 is provided with a fourth opening 31, which is a partial opening structure. The geometric center of the fourth opening 31 is on the x-axis. The area of the fourth opening 31 is smaller than the area of the second end surface 12. Preferably, the shape of the fourth opening is a regular geometric shape, such as a square, a circle, a regular hexagon, and the like. In addition to providing the required optical-mechanical transmission function, the opening can also be set according to the size of the opening area when needed. Produces specific shading effects. The baffle 3 is also provided with a third pressing portion 32, a second buckling structure 33, and a threaded hole 34. The third pressing portion 32 and the second buckling structure 33 are located at the upper and lower ends of the baffle 3, respectively. The third pressing portion 32 presses downward along the z axis. The third pressing portion 32 applies a force to the optical machine 4 or the optical machine covering 1 in the z axis direction. The second buckling structure 33 is used for The corresponding buckle structure on the machine casing is engaged and fixed, and the threaded hole 34 is also used to fixedly connect the baffle 3 to the projector casing.

Preferably, an end of the baffle plate 3 is further provided with a fifth clamping portion 35, which is located at the left end of the baffle plate 3. The force applying direction of the fifth clamping portion 35 is along the y-axis, that is, the optical machine 4 or The optical-mechanical cover 1 exerts a force to realize the strengthening and fixing of the optical-machine 4 or the optical-machine cover 1 by the baffle 31.

Preferably, the third pressing portion 32 or the fifth clamping portion 35 is made of an elastic element, such as an elastic piece or the like.

All the above-mentioned optional technical solutions may be used in any combination to form optional embodiments of the present invention, which are not described in detail here.

FIG. 5 is a schematic diagram of the overall structure of the projector optical-mechanical fixing device and optical-machine assembly provided by an embodiment of the present invention. FIG. 6 is a schematic diagram of the exploded structure of FIG. 5. FIG. 7 is a schematic diagram of a state in which a projector optical machine fixing device according to an embodiment of the present invention is installed on a projector casing.

As shown in FIG. 5 to FIG. 7, in a preferred embodiment, the process of using the projector optical machine fixing device provided by the embodiment of the present invention is as follows: First, the optical machine 4 is passed through the first part of the optical machine cover 1. The opening 13 is filled into the cavity of the optical-mechanical cover 1 to complete the installation process of the optical-mechanical cover 4. Then, the clamping element 2 is mounted to the outside of the optical-mechanical cover 1 and the first clamp of the clamping element 2 is mounted. The tightening portion 21a and the second clamping portion 21b clamp the corresponding side of the optical machine 4 in the y-axis direction. The third clamping portion 22a and the fourth clamping portion 23a act on the optical machine covering 1 to complete the clamping. The process of clamping and fixing the element 2 to the optical machine cover 1, and then fixing the clamping element 2 and the optical machine cover 1 accommodating the optical machine 4 to the first connecting portion 24 and the second connecting portion 25. On the projector housing; Finally, the baffle 3 is mounted on the second end surface 12 of the optical-mechanical cover 1, the fifth clamping portion 35 acts on the optical-mechanical cover 1, and is fixed through the threaded hole 34 and the second snap structure 33 To the projector housing, the entire structure is fixed.

It should be noted that the installation method or the fixing order of the above-mentioned use process of the projector optical fixing device provided by the embodiment of the present invention is not limited to this, and may be different according to different situations, that is, it can be changed as long as it can be completed The fixing function of the optical-mechanical fixing device may be sufficient.

In summary, the projector optical machine fixing device provided by the embodiment of the present invention adopts the optical machine cover of the side opening structure and a clamping element provided with a clamping part, so that the optical machine and the optical machine cover do not need to be installed. Under the premise of dispensing, the running problem of the optical machine is solved, and the fixing is more firm. At the same time, the problems of long dispensing process cycle and poor operation elasticity are solved. In addition, there is no need to wrap the cover on one end of the optical machine cover, which avoids the problem of light shielding caused by the cover from receding or deforming, thereby improving the picture quality of the projector. In addition, the projector optical machine fixing device provided by the embodiment of the present invention also has the characteristics of simple structure, convenient use, and low cost.

In addition, an embodiment of the present invention also provides a projector. The projector includes any one of the projector optical machine fixing devices in the above technical solutions. The optical machine 4 is located in the cavity of the optical machine cover 1 and is connected. The part is fixedly connected to the projector casing.

In summary, the projector provided by the embodiment of the present invention, because the optical machine fixing device adopts the optical machine cover of the side opening structure and a clamping element with a clamping part, it is not necessary to connect the optical machine and the light. Under the premise of machine coating parts dispensing, It solves the problem of running of the optical machine, and it fixes more firmly. At the same time, it solves the problems of long dispensing process cycle and poor operation elasticity. In addition, there is no need to wrap the cover on one end of the optical machine cover, which avoids the problem of light shielding caused by the cover from receding or deforming, thereby improving the picture quality of the projector.

In summary, although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the attached patent application.

Claims (9)

A fixing device for a projector light machine, the device comprises a light machine cover, which has a cavity for accommodating the light machine, and has two first end surfaces perpendicular to the center axis of the light machine at the periphery of the cavity, Two end faces, three side faces parallel to the central axis of the optical machine, and a first opening. The direction of the central axis of the optical machine is the first direction, and the first and second end faces are perpendicular to the first direction. In a second direction, the three sides are along the first direction, the first opening is used to fit the optical machine, the first end surface is provided with a second opening, and the second end surface is provided with a third Openings, the second opening and the third opening are all of a regular geometric shape, the geometric centers of the second opening and the third opening are all in the first direction, and the area of the second opening is smaller than An area of the first end surface and an area of the third opening are smaller than an area of the second end surface; the clamping element includes a clamping portion and a connecting portion located at an end of the clamping portion, and the clamping portion The optical machine cover is surrounded and clamped, and the connecting portion is used for projection The housing is fixedly connected, the clamping portion includes a first clamping portion, a second clamping portion, and a third clamping portion, and the first clamping portion and the third clamping portion are located in the second clamping portion. The first clamping portion and the third clamping portion both clamp the optical-mechanical cover in the second direction on opposite sides of the holding portion, and the first clamping portion is provided with a first A clamping portion, wherein the first clamping portion abuts the optical machine at the third opening; and a baffle plate for cooperating with the second end surface, the baffle plate is provided with a first There are four openings, the geometric center of the fourth opening is in the first direction, the area of the fourth opening is smaller than the area of the second end surface, and a third pressing portion, a first Two snap-in structures and threaded holes, the third pressing portion and the second snap-in structure are respectively located at upper and lower ends of the baffle opposite to each other, and the third pressing portion A third direction perpendicular to the one direction and the second direction is pressed downward. According to the first aspect of the patent application scope of the invention, the first optical clamping device further includes a second clamping portion, and the first clamping portion and the second clamping portion are provided separately. At both ends of the first clamping portion, the second clamping portion abuts the optical machine at the third opening. According to the second aspect of the scope of the patent application, the projector light fixture is further provided with a first pressing portion and a second pressing portion, and the first pressing portion and the The second pressing portion is located on an upper side and a lower side of the three sides, respectively, and the first pressing portion and the second pressing portion are along the first direction and the second direction. A third vertical direction is pressed against the optical machine; the second clamping portion is provided with a third clamping portion, the third clamping portion is pressed downward in the third direction; the third clamping The holding portion is provided with a fourth clamping portion, and the urging direction of the fourth clamping portion is the same as the urging direction of the third clamping portion. The projector optical machine fixing device according to item 3 of the scope of patent application, wherein the first pressing portion, the second pressing portion, the first clamping portion, the second clamping portion, the third clamping portion, and / Or the fourth clamping portion adopts an elastic element. According to the first aspect of the scope of the patent application, the projector optical machine fixing device, wherein the connection portion includes a first connection portion and a second connection portion, the first connection portion is fixedly connected to the first clamping portion, The second connection portion is fixedly connected to the third clamping portion. According to the fifth aspect of the patent application scope of the present invention, the first fixing portion is provided with a first buckle structure, and the second connecting portion is provided with a threaded hole. According to the third aspect of the patent application scope of the present invention, a fifth clamping portion is further provided at an end portion of the baffle plate, which is located at a left end of the baffle plate. The force application direction is along the second direction. According to the projector optical device fixing device according to item 7 of the scope of patent application, wherein the third pressing portion or the fourth clamping portion adopts an elastic element. A projector includes the projector optical machine fixing device according to any one of items 1 to 8 of the scope of patent application, the optical machine is located in the cavity of the optical machine cover, and the connecting portion and the The projector housing is fixedly connected.