TW201823844A - projector AND light PIPE fixing device THEREOF - Google Patents

Abstract

A projector and a light pipe fixing device thereof are provided, which belong to light guiding field. The light pipe fixing device includes a light pipe covering member (1) having a cavity for accommodating a light pipe (4), a cover (2) and a clamping member (3). There are a first end face (11), four side surfaces and a first opening (12) at the periphery of the cavity, the central axial line of the light pipe (4) is located in a first direction, the first end face (11) and the first opening (12) are in a second direction perpendicular to the first direction, and the four side surfaces are disposed along the first direction. The first opening (12) is for mounting a light pipe (4), the first end face (11) has a second opening (11a), and the second opening (11a) is shaped as a regular geometry. The geometric center of the second opening (11a) is in the first direction (11a).

Description

Projector and its optical-mechanical fixing device

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

A projector is a device that can project an image or video onto the screen. It can play the corresponding video signal through different interface computers, VCD, DVD, BD, game consoles, DV, etc., 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 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.

In DLP projectors, the optical element light machine (Light Pipe, LP for short) 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 optical machine in the prior art, there are problems such as complicated fixing methods, insecure fixing, long process cycle or high cost. 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 2 ′. The light machine cover 1 ′ is provided with an opening 14 at the tail portion, and a plurality of glue dispensing portions are provided in the light machine cover 15. When it is necessary to fix the optical machine 4, the optical machine 4 is installed from the opening 14 of the optical machine cover 1 ', and the UV glue is performed at the place where the dispensing portion 15 and the optical machine cover 1' are in partial contact. Dispensing, after the dispensing process, the cover 2 'is then mounted to the optical machine cover 1' at the opening 14 of the optical machine cover 1 ', and the end of the optical machine cover 1' is covered Finally, the optical machine cover 1 ′ is clamped by the clamping element, and then is 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 glueless fixing method of the cover body 2 ′, the cover body 2 ′ has a risk of receding, or the cover body 2 ′ is deformed, which may cause problems such as blocking of the light path.

According to an 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 has a first end surface, four edges on the periphery of the cavity. The side surfaces and the first opening, the direction of the central axis of the optical machine is the first direction, and the first end surface and the end surface where the first opening is located are all in a second direction perpendicular to the first direction, the The four sides are along the first direction, the first opening is used to install the optical machine, the first end surface is provided with a second opening, the second opening is a regular geometric shape, and the second opening The geometric center is in the first direction, the area of the second opening is smaller than the area of the first end surface, and the first openings on the opposite upper and lower sides of the four sides are also provided with a first Snap structure; cover, the cover is provided with a third opening, the third opening is a regular geometry, the geometric center of the third opening is in the first direction, and the area of the third opening The cover is smaller than the area of the first opening, An opening is pressed against the optical machine along the first direction, and the cover body is further provided with a second snap-in structure that cooperates with the first snap-in structure. The cooperation of the second buckle structure enables the cover to be fixedly connected to the optical-mechanical cover; the clamping element includes a clamping portion and a connecting portion located at an end of the clamping portion, and the clamping The optical machine cover is surrounded and clamped by a portion, and the connecting portion can fix the optical machine cover on a projector casing.

Preferably, the first fastening structure includes an upper protrusion and a lower protrusion, and the second fastening structure includes an upper groove and a lower groove, and the upper groove is used for engaging with the upper protrusion. The lower groove is used for engaging with the lower bump.

Preferably, the upper bump is a bump extending in a third direction, the lower bump is a bump extending in the first direction, and the third direction is respectively related to the first direction and the first direction. The second direction is vertical.

Preferably, the upper projection and the lower projection of the first buckle structure are an integrally formed structure formed by bending on the optical-mechanical cover.

Preferably, the first buckle structure includes one or more hooks and / or bayonets, and the second buckle structure includes one or more mated with the one or more hooks and / or bayonets. Bayonet and / or hook.

Preferably, 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. On the opposite sides, the first clamping portion and the third clamping portion both clamp the optical machine cover in the second direction, and the left and right ends of the first clamping portion are respectively provided with There is a first clamping portion, and the urging direction of the first clamping portion is the same as the urging direction of the first clamping portion.

Preferably, the first clamping portion adopts an elastic element.

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, a third buckle structure is provided on the first connection portion, and a threaded hole is provided on the second connection portion.

According to another aspect of the present invention, a projector is provided. The projector includes the projector optical-machine fixing device in the above technical solution, and the optical machine is located in the cavity of the optical-machine cover.

The beneficial effects brought by the technical solutions provided by the embodiments of the present invention are: the projector optical machine fixing device and the projector including the projector fixing device provided by the embodiments of the present invention are fixed by buckling the cover and the optical machine cover , And it can be used in combination with the clamping element capable of holding the optical machine cover and fixing it on the projector housing, and realizes the cover without the need to dispense the optical machine and the optical machine cover. It is not easy to retreat or change position, and solves the problems of long dispensing process cycle and poor operation flexibility. In addition, the device not only avoids the problem of shading caused by the cover body from backing up or deforming, but also solves the running problem of the light machine, makes the light machine fixed more firmly, thereby improving the picture quality of the projector. In addition, the projector optical machine fixing device provided by the embodiments of the present invention also has the advantages of simple structure, easy manufacture, and convenient use.

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:

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 having ordinary knowledge in the art without any creative labor belong to the protection scope of the present invention.

The projector optical machine fixing device provided by the embodiment of the present invention includes: the optical machine cover has a cavity for accommodating the optical machine, and has a first end surface, four sides and a first opening at the periphery of the cavity, and the center of the optical machine The axis direction is the first direction. The first end surface and the end surface where the first opening is located are all in a second direction perpendicular to the first direction. The four side surfaces are in the first direction. The first opening is used to fit the optical machine. A second opening is provided. The second opening has a regular geometric shape. The geometric center of the second opening is in the first direction. The area of the second opening is smaller than the area of the first end surface. A first snap structure is also provided at the first opening; the cover body is provided with a third opening, the third opening is a regular geometry, the geometric center of the third opening is in the first direction, and the area of the third opening is smaller than The area of the first opening, the cover body is further provided with a second buckle structure that cooperates with the first buckle structure; the clamping element includes a clamping portion and a connecting portion located at an end of the clamping portion, and the clamping portion surrounds and Clamping machine cover, connecting part Machine coated light projector element is fixed to the housing. Through the above-mentioned projector light machine fixing device, the light machine can be effectively fixed, and the running problem of the light machine is solved. It has the advantages of simple structure, convenient use, and easy production, and can be widely used in light guides in the field of light guides. Fixed 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 schematic structural diagram of a cover body in a projector optical machine fixing device according to an embodiment of the present invention. FIG. 4 is a schematic diagram of the overall structure of the optical machine covering member and the cover body in the projector optical machine fixing device according to the embodiment of the present invention. FIG. 5 is a schematic structural diagram of a clamping element in a projector optical machine fixing device according to an embodiment of the present invention. The x-axis direction is a first direction, the y-axis direction is a second direction, and the z-axis direction is a third direction.

As shown in FIG. 2 to FIG. 5, the projector optical machine fixing device according to the embodiment of the present invention mainly includes an optical machine cover 1, a cover 2, and a clamping element 3.

Specifically, as shown in FIG. 2, the optical-mechanical cover 1 has a cavity for receiving the optical machine 4, and has a first end surface 11, four sides, and a first opening 12 on the periphery of the cavity. The central axis direction is the x-axis direction. The end faces where the first end face 11 and the first opening 12 are located are along the y-axis perpendicular to the x-axis, and the four side faces are along the x-axis. Optical machine 4, the first end face 11 is provided with a second opening 11a, the second opening 11a is a regular geometric shape, such as a square, a circle, a regular hexagon, etc., the geometric center of the second opening 11a is on the x-axis, and the second opening The area of 11 a is smaller than the area of the first end surface 11. A first snap structure 13 is also provided at the first opening 12 of the upper and lower sides opposite to the four sides.

As shown in FIG. 3, the cover 2 is provided with a third opening 21, and the third opening 21 has a regular geometric shape, such as a square, a circle, a regular hexagon, and the like. The geometric center of the third opening 21 is on the x-axis. The area of the third opening 21 is smaller than the area of the first opening 12. It is used to provide a path for the light emitted by the optical machine 4 in the cavity. The two opening areas can be designed according to needs. size. The cover 2 is pressed against the optical machine 4 in the x-axis direction at the first opening 12. The cover 2 is further provided with a second snap structure 22 that cooperates with the first snap structure 13. The cooperation of the structure 13 and the second buckle structure 22 makes the cover 2 and the optical-mechanical cover 1 fixedly connected.

The clamping element 3 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. The connecting portion can fix the optical machine cover 1 on the projector housing. .

Preferably, the first fastening structure 13 includes an upper protrusion and a lower protrusion, and the second fastening structure 22 includes an upper groove and a lower groove. The upper groove is used for engaging with the upper protrusion, and the lower groove is used for Engage with the lower bump.

Preferably, the upper bump is a bump extending along the z-axis direction, the lower bump is a bump extending along the x-axis direction, and the z-axis direction is perpendicular to the x-axis direction and the y-axis direction, respectively.

Preferably, the upper projection and the lower projection of the first latching structure 13 are an integrally formed structure formed by bending on the optical machine covering 1.

Preferably, the first buckle structure 13 of the cover 2 includes one or more hooks and / or bayonets, and the second buckle structure 22 includes one or more mated with one or more hooks and / or bayonets. Bayonet and / or hook.

Preferably, as shown in FIG. 5, the holding portion 3 includes a first holding portion 31, a second holding portion 32, and a third holding portion 33. The first holding portion 31 and the third holding portion 33 are located at The two opposite sides of the second clamping portion 32, the first clamping portion and the third clamping portion both clamp the optical machine cover in the y-axis direction, and the left and right ends of the first clamping portion 31 are respectively provided with first The urging directions of the clamping portions 31 a and 31 b and the first clamping portions 31 a and 31 b are the same as those of the first clamping portion 31. In addition, a second clamping portion 32a may be provided on the second clamping portion 32, and a third clamping portion 33a may be provided on the third clamping portion 33.

Preferably, the first clamping portions 31a, 31b are made of elastic elements, such as elastic pieces. The second clamping portion 32a and the third clamping portion 33a may be made in whole or in part from an elastic element, such as an elastic piece. Such a structural arrangement can enable the clamping element 3 to effectively fix the optical machine cover 1 in which the optical machine 4 is housed, thereby further fixing the optical machine 4.

Preferably, the connection portion includes a first connection portion 34 and a second connection portion 35. The first connection portion 34 is connected to the first clamping portion 31, and the second connection portion 35 is connected to the third clamping portion 33. After the clamping device 3 clamps and fixes the optical machine cover 1 with the optical device, the first connection portion 34 and the second connection portion 35 are used to fix the clamping device 3 on the projector housing. The first connection portion 34 and the second connection portion 35 can be fixed to the projector housing in various ways, as long as the purpose of fixing is achieved. For example, it can be a screw connection, a snap connection, a welding method, etc. Moreover, the embodiments of the present invention are not limited thereto.

Preferably, the first connecting portion 34 is provided with a third buckle structure 34a. The third buckle structure 34a is a bayonet, and the bayonet can be assembled with a corresponding buckle provided on the projector housing to realize clamping. The holding element 3 is fixed on the projector casing. The second connection portion 35 is provided with a threaded hole 35a, and the second connection portion 35 can be fixedly connected to a corresponding portion of the projector housing through a screw or bolt and the threaded hole 35a. In addition, the third buckle structure 34a may also be A clip, which can be assembled with a corresponding bayonet provided on the projector housing, so as to fix the clamping element 3 on the projector housing.

Preferably, the first connecting portion 34 and the first clamping portion 31 are integrally formed, and the second connecting portion 35 and the third clamping portion 33 are integrally formed. Such a mechanism design can simplify the manufacturing process, thereby reducing manufacturing costs, and has an excellent shape.

In addition, preferably, the projector optical machine fixing device provided by the embodiment of the present invention further includes a baffle 5 which is provided with an opening. The geometric center of the opening is on the central axis of the optical machine 4, namely, the x-axis direction. The setting can achieve the required light-mechanical transmission function, and can also achieve a specific shading effect according to the setting of the opening area when needed.

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 has problems such as unstable quality and long process cycles. For example, when an external force (such as vibration or drop) is applied to the outer part of the optical machine cover, the position of the optical machine will mutate or run, which will cause the screen of the projector. Problems such as abnormalities, in addition, when the dispensing amount is improper, it will also cause interference with the clamping member, 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 easy to cause problems such as blocking the light, and it will also affect the image quality of the image projector. In the optical-mechanical fixing device provided by the embodiment of the present invention, the optical-mechanical cover 1 and the cover 2 are fixed in a snap manner, the cover 2 and the optical-mechanical cover are more firmly fixed, and the position of the cover 2 is not easy. Make a difference. In addition, the optical-mechanical cover 1, the cover 2 and the clamping element 2 that can surround and hold the optical-machine cover 1 are used together to achieve effective fixation of the optical machine and also eliminate the dispensing process to avoid It solves the problems of long-term dispensing and baking operations, and the abnormality of the projection screen caused by the movement of the light machine and the change of the cover.

FIG. 6 is a schematic exploded structure diagram of a projector optical machine fixing device according to an embodiment of the present invention. FIG. 7 is a schematic structural diagram of a projector optical machine fixing device installed on a projector according to an embodiment of the present invention.

As shown in FIGS. 6-7, in a preferred embodiment, the process of using the projector light fixture fixing device provided by the embodiment of the present invention is as follows: First, the light machine 4 is passed through the first opening 12 of the light machine cover 1 Fill the cavity of the optical-mechanical cover 1 to complete the installation process of the optical-mechanical cover 4. Then, install the cover 2 to the optical-mechanical cover 1; thereafter, install the clamping element 3 to the optical-mechanical cover Outside the component 1, the clamping element 3 is mounted on the optical-mechanical cover 1 to complete the clamping process of the optical-mechanical cover 1 by the clamping element 3, and then, through the first connecting portion 34 and the second connecting portion 35 Fix the holding device and the optical machine cover 1 containing the optical machine 4 to the projector housing; finally, install the baffle 5 to the first end face 11 of the optical machine cover 1 and communicate with the projection The casing is fixedly connected, and 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 addition, an embodiment of the present invention also provides a projector. The projector includes any one of the above-mentioned technical solutions of the projector optical-machine fixing device. The projector fixing device mainly includes an optical-machine covering member 1, and the optical machine 4 is located in the optical device. Inside the cavity of the machine cover 1.

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.

In summary, the projector-optical machine fixing device and the projector including the projector-optical machine fixing device provided by the embodiments of the present invention can fix the cover and the optical-mechanical cover, and can hold the light. The camera cover and the clamping element fixed on the projector housing are used together. Without the need to dispense the optical machine and the optical machine cover, the cover is not easy to retreat or change position. Avoiding the problem of shading caused by the back cover or deformation of the cover, also solves the problem of running the light machine and fixes it more firmly, thereby improving the picture quality of the projector, and at the same time solving the long dispensing process cycle and poor operating elasticity, etc. problem. In addition, the projector optical machine fixing device provided by the embodiments of the present invention also has the advantages of simple structure, easy manufacture, and convenient use.

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.

1, 1’‧‧‧ Optical machine cover

2, 2’‧‧‧ cover

3‧‧‧ clamping element

4‧‧‧ Optical Machine

5‧‧‧ bezel

11‧‧‧first end face

11a‧‧‧Second opening

12‧‧‧ the first opening

13‧‧‧First buckle structure

14‧‧‧ opening

15‧‧‧ Dispensing Department

21‧‧‧ Third opening

22‧‧‧Second snap structure

31‧‧‧First clamping section

31a, 31b‧‧‧First clamping section

32‧‧‧Second clamping section

32a‧‧‧Second clamping part

33‧‧‧ the third clamping part

33a‧‧‧Third clamping part

34‧‧‧First connecting section

34a‧‧‧The third buckle structure

35‧‧‧Second connection section

35a‧‧‧Threaded hole

FIG. 1 is a schematic diagram of a structure of a projector light fixture in the prior art; FIG. 2 is a diagram of a structure of a light machine cover in the projector light fixture of an embodiment of the present invention; FIG. The schematic diagram of the structure of the cover in the projector light fixture fixing device provided by the embodiment of the invention; FIG. 4 is the overall structure of the light machine cover and the cover body in the projector light fixture fixing device provided by the embodiment of the invention; FIG. 5 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. 6 is an exploded structural schematic diagram of a projector optical machine fixing device according to an embodiment of the present invention; FIG. Is a schematic structural diagram of a projector optical machine fixing device installed on a projector according to an embodiment of the present invention.

Claims (10)

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 a first end surface, four sides, and a first opening on the periphery of the cavity. The direction of the central axis of the optical machine is a first direction, and the first end surface and the end surface where the first opening is located are all in a second direction perpendicular to the first direction, and the four sides are in the first direction. The first opening is used for loading the optical machine, the first end surface is provided with a second opening, the second opening is a regular geometry, and the geometric center of the second opening is on the first side Upward, the area of the second opening is smaller than the area of the first end surface, and a first snap structure is also provided at the first opening of the upper and lower sides opposite to the four side surfaces; The cover is provided with a third opening, the third opening has a regular geometric shape, a geometric center of the third opening is in the first direction, and an area of the third opening is smaller than an area of the first opening, The cover body abuts at the first opening in the first direction. In the optical machine, the cover body is further provided with a second fastening structure that cooperates with the first fastening structure, and the cooperation between the first fastening structure and the second fastening structure makes the The cover is fixedly connected to the optical-mechanical cover; a clamping element includes a clamping portion and a connecting portion located at an end of the clamping portion, and the clamping portion surrounds and clamps the optical-machine cover The connecting portion can fix the optical machine cover on the projector casing. According to the first aspect of the scope of the patent application, the projector optical device fixing device, wherein the first buckle structure includes an upper bump and a lower bump, and the second buckle structure includes an upper groove and a lower groove, The upper groove is used for engaging with the upper bump, and the lower groove is used for engaging with the lower bump. According to the second aspect of the patent application scope of the present invention, the upper projection is a projection extending in a third direction, and the lower projection is a projection extending in the first direction. The third direction is perpendicular to the first direction and the second direction, respectively. According to the item 2 of the scope of the patent application, the projector light machine fixing device, wherein the upper and lower bumps of the first buckle structure are integrally formed by bending on the light machine cover structure. According to the first aspect of the scope of the patent application, the projector light machine fixing device, wherein the first buckle structure includes one or more hooks and / or bayonets, and the second buckle structure includes a connection with the one Or one or more bayonet and / or hooks that cooperate with the bayonet and / or bayonet. According to the first aspect of the patent application scope of the invention, the clamping device includes a first clamping portion, a second clamping portion, and a third clamping portion. The third clamping portion is located on two opposite sides of the second clamping portion, and the first clamping portion and the third clamping portion both clamp the optical machine cover in the second direction. The first and second ends of the first clamping portion are respectively provided with first clamping portions, and the direction of the urging force of the first clamping portion is the same as that of the first clamping portion. According to the sixth aspect of the patent application scope, the projector optical machine fixing device, wherein the first clamping portion adopts an elastic element. The fixing device for a projector optical machine according to item 1 of the scope of patent application, wherein the connection portion includes a first connection portion and a second connection portion, and the first connection portion and the first clamping portion The second connection portion is fixedly connected to the third clamping portion. According to the projector optical machine fixing device according to item 8 of the scope of the patent application, the first connecting portion is provided with a third buckle structure, and the second connecting portion is provided with a threaded hole. A projector includes the projector optical-mechanical fixing device according to any one of items 1 to 9 of the scope of patent application, and the optical machine is located in the cavity of the optical-mechanical cover.