Cylinder type projector internal supporting platform

Abstract

The utility model discloses an internal supporting platform of a cylindrical projector. The internal supporting platform comprises a front supporting piece, a middle supporting piece and a rear supporting piece, the surfaces of the two sides of the front supporting piece are each provided with a first screw hole and a first stud. An arc-shaped supporting piece is connected between the front supporting piece and the middle supporting piece, and the arc-shaped supporting piece, the front supporting piece and the middle supporting piece are integrally formed. The middle supporting piece is of a vertically-arranged circular structure, a plurality of threading holes are formed in the middle supporting piece, and the middle supporting piece and the outer shell are assembled and fixed through the mounting holes and bolts. The rear supporting piece is fixedly assembled on the side, away from the front supporting piece, of the middle supporting piece through a bolt. The rear supporting piece is provided with a hollowed-out containing cavity, a limiting piece, a plurality of second screw holes and a plurality of second studs. The internal supporting platform can be integrally and stably assembled, is simple and compact in structure and small in number, does not occupy the internal space of the projector, avoids additional assembly structures, is convenient to assemble, and greatly reduces the overall weight and size of the projector.

Description

Technical Field

[0001] The utility model relates to the technical field of projector support structures, in particular to an internal support platform of a barrel-type projector. Background Art

[0002] With the development of science and technology and the improvement of economic level, projectors have gradually entered thousands of households as an indoor household device. The installation requirements for indoor projectors are not high, and they can be directly placed on the indoor platform for use. Due to the needs of large-scale conferences, exhibitions or outdoor activities, outdoor projectors have also emerged. Outdoor projectors have higher requirements on waterproof and heat dissipation functions. While overcoming the waterproof and heat dissipation problems, their size and weight have also increased greatly, which has put forward higher requirements on the internal support structure of outdoor projectors.

[0003] Most existing projectors are large-volume square three-dimensional, mainly composed of an outer shell, several internal support structures, a projection component and a heat dissipation component, with a total weight of tens of kilograms or even hundreds of kilograms. Among them, several internal support structures are used to support and fix the projection component and the heat dissipation component. Then, the internal support structure is assembled with the external shell of the projector by bolts, so that the overall function of the projector can be realized.

[0004] The defects of the above prior art are:

[0005] The internal supporting structure of the projector is complicated and numerous. The internal supporting structure is not compact enough and occupies a large space inside the projector, which greatly increases the overall weight and volume of the projector. In addition, the complicated and numerous internal supporting structures will also bring about stability problems of the internal structure of the projector.

[0006] Therefore, it is urgent to propose an internal support platform for a cylindrical projector that overcomes the above problems. Utility Model Content

[0007] In view of the problems existing in the prior art, the utility model provides an internal support platform for a cylindrical projector. After adopting the internal support platform for the cylindrical projector, on the one hand, through the integrated design of the arc-shaped support sheet, the front support member and the middle support member, and in addition, the rear support member is fixedly assembled on the middle support member by screws, so that the internal support platform can be assembled as a whole stably, and the internal support platform has a simple and compact structure and a small number, does not occupy the internal space of the projector, and greatly reduces the overall weight and volume of the projector;

[0008] On the other hand, the middle support member is orthogonally connected to the front support member, and the middle support member is a vertically arranged circular structure. The circular structure design can adapt to the outer shell of the barrel projector, so that the internal support platform is placed in the outer shell without being interfered by the internal structure of the outer shell. In addition, a number of threading holes are provided on the middle support member, so that the wire harness in the barrel projector does not need to be fixed with an additional threading structure, and local materials can be used;

[0009] In addition, a plurality of mounting holes and bolts used in conjunction with the mounting holes are arranged on the outer peripheral edge of the intermediate support member, and the intermediate support member is assembled and fixed to the outer shell through the mounting holes and bolts. Since the intermediate support member, the arc-shaped support plate and the front support member are integrally formed, and the intermediate support member and the rear support member are assembled and fixed with bolts, the entire internal support platform only needs to be assembled with bolts between the intermediate support member and the outer shell, thereby achieving a stable connection between the internal support platform and the outer shell, avoiding the problem of adding an additional assembly structure, and having a simple structure and convenient assembly.

[0010] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0011] The present application proposes an internal support platform for a cylindrical projector, comprising a front support member, an intermediate support member connected to the front support member, and a rear support member connected to a side of the intermediate support member away from the front support member;

[0012] Both side surfaces of the front support member are provided with a plurality of first screw holes and a plurality of first studs, wherein the first screw holes and the first studs are used to assemble the front projection assembly;

[0013] An arc-shaped support piece is connected between the front support piece and the middle support piece, the middle support piece and the front support piece are orthogonally connected, and the arc-shaped support piece, the front support piece and the middle support piece are integrally formed;

[0014] The intermediate support is a vertically arranged circular structure, and is provided with a plurality of threading holes. The outer peripheral edge of the intermediate support is provided with a circle of sealing strips, a plurality of mounting holes and bolts used in conjunction with the mounting holes. The intermediate support is assembled and fixed to the external housing through the mounting holes and the bolts.

[0015] The rear support member is fixedly assembled to the side of the intermediate support member away from the front support member by screws, and the rear support member is provided with a hollow accommodating cavity, a limiting member, a plurality of second screw holes and a plurality of second studs, the accommodating cavity is used to accommodate the heat dissipation component, the limiting member is used to abut the heat dissipation component, and the first screw hole and the first stud are used to assemble the heat dissipation fan;

[0016] The design of the above technical solution, on the one hand, the application adopts the integrated design of the arc-shaped support piece, the front support member and the middle support member, and the rear support member is fixedly assembled on the middle support member by screws, so that the internal support platform can be assembled stably as a whole, and the internal support platform has a simple and compact structure and a small number, and does not occupy the internal space of the projector, so that the overall weight and volume of the projector are greatly reduced;

[0017] On the other hand, the intermediate support member of the present application is orthogonally connected to the front support member, and the intermediate support member is a vertically arranged circular structure. The circular structure design can adapt to the outer shell of the barrel projector, so that the internal support platform is placed in the outer shell without being interfered by the internal structure of the outer shell. In addition, a number of threading holes are provided on the intermediate support member, so that the wire harness in the barrel projector does not need to be fixed with an additional threading structure, and local materials can be used;

[0018] In addition, a plurality of mounting holes and bolts used in conjunction with the mounting holes are arranged on the outer peripheral edge of the intermediate support member of the present application, and the intermediate support member is assembled and fixed to the external shell through the mounting holes and bolts. Since the intermediate support member, the arc-shaped support plate and the front support member are integrally formed, and the intermediate support member and the rear support member are assembled and fixed with bolts, the internal support platform as a whole only needs to be assembled with bolts between the intermediate support member and the external shell, thereby achieving a stable connection between the internal support platform and the external shell, avoiding the problem of adding an additional assembly structure, and having a simple structure and convenient assembly.

[0019] In order to solve the technical problem, the further technical solution adopted by the utility model is:

[0020] Optionally, in the internal support platform of the cylindrical projector, an L-shaped angle piece and a first abutment piece are integrally formed on a side of the rear support member away from the middle support member, the rear support member is assembled and connected to the outer periphery of the power cavity through the L-shaped angle piece, the first abutment piece abuts against the side wall of the power cavity, and the power cavity is assembled and fixed to the external shell;

[0021] The design of the above technical solution completes the assembly and fixation between the rear support and the power cavity through the L-shaped angle piece on the rear support, and uses the first abutment piece on the rear support to abut against the side wall of the power cavity to achieve heat conduction in the power cavity to the rear support.

[0022] Further optionally, in the above-mentioned internal support platform of the cylindrical projector, a second abutment member is provided on the side of the rear support member away from the middle support member, and the second abutment member abuts against the outer periphery of the power supply cavity; three L-shaped corner members are provided, and the three L-shaped corner members are arranged in a triangle on the rear support member.

[0023] In the design of the above technical solution, the first abutment member and the second abutment member are both in abutment with the power supply cavity. In addition, the three L-shaped corner members are assembled and connected to the outer periphery of the power supply cavity in a triangular arrangement, so that the assembly between the rear support member and the power supply cavity is tighter and firmer, the structure is stable, and not easy to loosen.

[0024] Further optionally, in the internal support platform of the cylindrical projector, the first abutment member and the side wall of the power cavity are both provided with power threading holes;

[0025] The design of the above technical solution and the opening of the power wire threading hole facilitate the power wire from the power cavity to penetrate the first abutment member and connect with the projection assembly later, avoiding the need to design an additional support structure to fix the power wire.

[0026] Optionally, in the internal support platform of the cylindrical projector, two groups of the limiting members are provided along the length direction of the internal support platform, and the two groups of the limiting members are respectively provided on both sides of the rear support member;

[0027] The design of the above technical solution, through the design of the limiting members on both sides of the rear support, makes the limiting members abut against the heat dissipation component, thereby limiting the movement of the heat dissipation component in the accommodating cavity, improving the structural stability, and also facilitating heat conduction.

[0028] Optionally, in the internal support platform of the cylindrical projector, the front support member, the middle support member and the rear support member are all arranged in a straight line;

[0029] The design of the above technical solution makes it easier to arrange the front support member, the middle support member and the rear support member in a straight line.

[0030] Further optionally, in the internal support platform of the cylindrical projector, the width of the front support member, the width of the rear support member and the diameter of the middle support member are all smaller than the inner wall width of the outer shell;

[0031] In the design of the above technical solution, in order to accommodate and assemble the front support member, the rear support member and the middle support member in the external shell, the width of the front support member, the width of the rear support member and the diameter of the middle support member should be smaller than the inner wall width of the external shell.

[0032] Optionally, in the internal support platform of the cylindrical projector, the front support member, the middle support member and the rear support member are all made of aluminum alloy;

[0033] The design of the above technical solution adopts aluminum alloy material, so that after the front support member, the middle support member and the rear support member are fixedly connected, they have good deformation resistance, strong supporting force, good thermal conductivity and resistance to oxidation corrosion.

[0034] Further optionally, in the internal support platform of the above-mentioned barrel-type projector, the power cavity is made of aluminum alloy;

[0035] The design of the above technical solution adopts aluminum alloy material, which makes the power cavity have good deformation resistance, strong supporting force, good thermal conductivity and resistance to oxidation corrosion.

[0036] Optionally, in the internal support platform of the cylindrical projector, along the length direction of the internal support platform, the intermediate support member is provided with a plurality of arc-shaped positioning members at equal angles on the outer periphery of a side away from the front support member, and the arc-shaped positioning members are integrally formed with the intermediate support member;

[0037] The design of the above technical solution, through the structural design of the arc-shaped positioning member, enables the entire internal support platform to be guided and positioned and assembled in the external shell by relying on the arc-shaped positioning member on the intermediate support member, making assembly more convenient.

[0038] Compared with the prior art, this application has at least the following technical effects:

[0039] On one hand, the present application adopts an integrated design of the arc-shaped support sheet, the front support member and the middle support member, and the rear support member is fixedly assembled on the middle support member by screws, so that the internal support platform can be assembled stably as a whole, and the internal support platform has a simple and compact structure and a small number, and does not occupy the internal space of the projector, so that the overall weight and volume of the projector are greatly reduced;

[0040] On the other hand, the intermediate support member of the present application is orthogonally connected to the front support member, and the intermediate support member is a vertically arranged circular structure. The circular structure design can adapt to the outer shell of the barrel projector, so that the internal support platform is placed in the outer shell without being interfered by the internal structure. In addition, a plurality of threading holes are provided on the intermediate support member, so that the wire harness in the barrel projector does not need to be fixed with an additional threading structure, and local materials can be used;

[0041] In addition, a plurality of mounting holes and bolts used in conjunction with the mounting holes are arranged on the outer peripheral edge of the intermediate support member of the present application, and the intermediate support member is assembled and fixed to the external shell through the mounting holes and bolts. Since the intermediate support member is integrally formed with the arc-shaped support plate and the front support member, and the intermediate support member is assembled and fixed with bolts to the rear support member, the internal support platform as a whole only needs to be assembled with bolts between the intermediate support member and the external shell to achieve a stable connection between the internal support platform and the external shell, thus avoiding the problem of adding an additional assembly structure, and the structure is simple and easy to assemble.

[0042] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is one of the three-dimensional structural assembly schematic diagrams of the preferred embodiment of the present application;

[0044] Figure 2 This is the second schematic diagram of the three-dimensional structure assembly of the preferred embodiment of the present application;

[0045] Figure 3 It is one of the three-dimensional structural schematic diagrams of the front support member and the middle support member of the preferred embodiment of the present application;

[0046] Figure 4 This is the second schematic diagram of the three-dimensional structure of the front support member and the middle support member of the preferred embodiment of the present application;

[0047] Figure 5 It is a schematic diagram of the planar structure of the intermediate support member of the preferred embodiment of the present application;

[0048] Figure 6 It is a schematic diagram of the three-dimensional structure assembly of another preferred embodiment of the present application;

[0049] Figure 7 It is one of the three-dimensional structural schematic diagrams of the rear support member of another preferred embodiment of the present application;

[0050] Figure 8 This is the second schematic diagram of the three-dimensional structure of the rear support member of another preferred embodiment of the present application;

[0051] Fig. 9 is a schematic diagram of the three-dimensional structure of a power cavity of another preferred embodiment of the present application;

[0052] Fig.10 This is one of the planar structural schematic diagrams of the power cavity of another preferred embodiment of the present application;

[0053] Fig.11 This is the second schematic diagram of the planar structure of the power cavity of another preferred embodiment of the present application;

[0054] The parts in the accompanying drawings are marked as follows:

[0055] Front support member 1, first screw hole 11, first stud 12, intermediate support member 2, threading hole 21, sealing strip 22, mounting hole 23, bolt 24, arc-shaped positioning member 25, rear support member 3, accommodating cavity 31, limiting member 32, second screw hole 33, second stud 34, L-shaped angle member 35, first abutment member 36, second abutment member 37, arc-shaped support plate 4, power supply cavity 5 and power supply threading hole 6. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0057] Example

[0058] like Figures 1 to 5 As shown, in one embodiment of the present application, an internal support platform of a cylindrical projector is provided, comprising a front support member 1, an intermediate support member 2 connected to the front support member 1, and a rear support member 3 connected to a side of the intermediate support member 2 away from the front support member 1;

[0059] The two side surfaces of the front support member 1 are provided with a plurality of first screw holes 11 and a plurality of first studs 12, wherein the first screw holes 11 and the first studs 12 are used to assemble the front projection assembly;

[0060] An arc-shaped support piece 4 is connected between the front support piece 1 and the intermediate support piece 2. The intermediate support piece 2 and the front support piece 1 are orthogonally connected. The arc-shaped support piece 4, the front support piece 1 and the intermediate support piece 2 are integrally formed.

[0061] The intermediate support member 2 is a vertically arranged circular structure, and is provided with a plurality of threading holes 21. The outer peripheral edge of the intermediate support member 2 is provided with a circle of sealing strips 22, a plurality of mounting holes 23 and bolts 24 used in conjunction with the mounting holes 23. The intermediate support member 2 is assembled and fixed to the external housing through the mounting holes 23 and the bolts 24.

[0062] The rear support member 3 is fixedly assembled to the side of the intermediate support member 2 away from the front support member 1 by screws, and the rear support member 3 is provided with a hollow accommodating cavity 31, a stopper 32, a plurality of second screw holes 33 and a plurality of second studs 34, the accommodating cavity 31 is used to accommodate the heat dissipation component, the stopper 32 is used to abut the heat dissipation component, and the first screw hole 11 and the first stud 12 are used to assemble a heat dissipation fan;

[0063] On one hand, the embodiment of the present invention adopts the integrated design of the arc-shaped support piece, the front support member and the middle support member, and the rear support member is fixedly assembled on the middle support member by screws, so that the internal support platform can be assembled stably as a whole, and the internal support platform has a simple and compact structure and a small number, and does not occupy the internal space of the projector, so that the overall weight and volume of the projector are greatly reduced;

[0064] On the other hand, the intermediate support member is orthogonally connected to the front support member, and the intermediate support member is a vertically arranged circular structure. The circular structure design can adapt to the outer shell of the barrel projector, so that the internal support platform is placed in the outer shell without being interfered by the internal structure of the outer shell. In addition, a plurality of threading holes are provided on the intermediate support member, so that the wire harness in the barrel projector does not need to be fixed with an additional threading structure, and local materials can be used;

[0065] In addition, a plurality of mounting holes and bolts used in conjunction with the mounting holes are arranged on the outer peripheral edge of the intermediate support member of the present application, and the intermediate support member is assembled and fixed to the external shell through the mounting holes and bolts. Since the intermediate support member, the arc-shaped support plate and the front support member are integrally formed, and the intermediate support member and the rear support member are assembled and fixed with bolts, the internal support platform as a whole only needs to be assembled with bolts between the intermediate support member and the external shell, thereby achieving a stable connection between the internal support platform and the external shell, avoiding the problem of adding an additional assembly structure, and having a simple structure and convenient assembly.

[0066] like Figure 1 , Figures 6 to 11 As shown, in the above embodiment, preferably, the rear support member 3 is integrally formed with an L-shaped angle piece 35 and a first abutment piece 36 on one side away from the middle support member 2, the rear support member 3 is assembled and connected with the outer periphery of the power cavity 5 through the L-shaped angle piece 35, the first abutment piece 36 abuts against the side wall of the power cavity 5, and the power cavity 5 is assembled and fixed with the external shell;

[0067] In this embodiment, the assembly and fixation between the rear support member and the power cavity is completed by the L-shaped angle piece on the rear support member, and the first abutment member on the rear support member is used to abut against the side wall of the power cavity to achieve heat conduction in the power cavity to the rear support member.

[0068] like Figure 6 and Figure 7 As shown, in the above embodiment, it is further preferred that a second abutment member 37 is provided on a side of the rear support member 3 away from the middle support member 2, and the second abutment member 37 abuts against the outer periphery of the power cavity 5; three L-shaped corner pieces 35 are provided, and the three L-shaped corner pieces 35 are arranged in a triangle on the rear support member 3;

[0069] In this embodiment, the first abutment member and the second abutment member are both in abutment with the power supply cavity. In addition, the three L-shaped corner members are assembled and connected to the outer periphery of the power supply cavity in a triangular arrangement, so that the assembly between the rear support member and the power supply cavity is tighter and firmer, the structure is stable, and not easy to loosen.

[0070] like Figures 7 to 10 As shown, the above embodiment is further preferred that the first abutment member 36 and the side wall of the power cavity 5 are both provided with a power threading hole 6;

[0071] In this embodiment, the power wire threading hole is provided to facilitate the power wire from the power cavity to pass through the first abutment member and connect with the projection assembly, thereby avoiding the need to design an additional support structure to fix the power wire.

[0072] like Figure 1 and Figure 2 and Figure 7 and Figure 8 As shown, in the above embodiment, preferably, along the length direction of the internal support platform, two groups of the limiting members 32 are provided, and the two groups of the limiting members 32 are respectively provided on both sides of the rear support member 3;

[0073] In this embodiment, the limiting members on both sides of the rear support are designed so that the limiting members abut against the heat dissipation assembly, thereby limiting the movement of the heat dissipation assembly in the accommodating cavity, improving the structural stability, and also facilitating heat conduction.

[0074] like Figure 1 , Figure 2 and Figure 6 As shown, in the above embodiment, preferably, the front support member 1, the middle support member 2 and the rear support member 3 are all arranged in a straight line;

[0075] In this embodiment, the front support member, the middle support member and the rear support member are arranged in a straight line, so that it is easier to arrange it in the outer shell of the tube projector.

[0076] like Figures 1 to 6 As shown, in the above embodiment, it is further preferred that the width of the front support member 1, the width of the rear support member 3 and the diameter of the middle support member 2 are all smaller than the inner wall width of the outer shell;

[0077] In this embodiment, in order to accommodate and assemble the front support member, the rear support member and the middle support member in the external shell, the width of the front support member, the width of the rear support member and the diameter of the middle support member should be smaller than the inner wall width of the external shell.

[0078] like Figure 1 As shown, in the above embodiment, preferably, the front support member 1, the middle support member 2 and the rear support member 3 are all made of aluminum alloy;

[0079] In this embodiment, aluminum alloy is used so that after the front support member, the middle support member and the rear support member are fixedly connected, they have good deformation resistance, strong supporting force, good thermal conductivity, and resistance to oxidation and corrosion.

[0080] like Fig. 9 As shown, in the above embodiment, it is further preferred that the power cavity 5 is made of aluminum alloy;

[0081] In this embodiment, aluminum alloy is used to ensure that the power cavity has good deformation resistance, strong supporting force, good thermal conductivity, and resistance to oxidation and corrosion.

[0082] like Figures 1 to 4 As shown, in the above embodiment, preferably, along the length direction of the internal support platform, the intermediate support member 2 is provided with a plurality of arc-shaped positioning members 25 at equal angles on the outer periphery of the side away from the front support member 1, and the arc-shaped positioning members 25 are integrally formed with the intermediate support member 2;

[0083] In this embodiment, through the structural design of the arc-shaped positioning piece, the entire internal support platform can be guided and positioned and assembled in the external shell by relying on the arc-shaped positioning piece on the middle support piece, which makes assembly more convenient.

[0084] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. An internal support platform for a cylindrical projector, characterized in that: It comprises a front support member (1), an intermediate support member (2) connected to the front support member (1), and a rear support member (3) connected to a side of the intermediate support member (2) away from the front support member (1); Both side surfaces of the front support member (1) are provided with a plurality of first screw holes (11) and a plurality of first studs (12), wherein the first screw holes (11) and the first studs (12) are used to assemble the front projection assembly; An arc-shaped support sheet (4) is connected between the front support member (1) and the intermediate support member (2); the intermediate support member (2) and the front support member (1) are orthogonally connected; the arc-shaped support sheet (4), the front support member (1) and the intermediate support member (2) are integrally formed; The intermediate support member (2) is a vertically arranged circular structure. A plurality of threading holes (21) are provided on the intermediate support member (2). A circle of sealing strips (22), a plurality of mounting holes (23) and bolts (24) used in conjunction with the mounting holes (23) are provided on the outer peripheral edge of the intermediate support member (2). The intermediate support member (2) is assembled and fixed to the external shell through the mounting holes (23) and the bolts (24). The rear support member (3) is fixedly assembled on a side of the intermediate support member (2) away from the front support member (1) by means of screws. The rear support member (3) is provided with a hollow accommodating cavity (31), a limiting member (32), a plurality of second screw holes (33) and a plurality of second studs (34). The accommodating cavity (31) is used to accommodate a heat dissipation component, the limiting member (32) is used to abut against the heat dissipation component, and the first screw hole (11) and the first stud (12) are used to assemble a heat dissipation fan.

2. The internal support platform of a cylindrical projector according to claim 1, characterized in that: An L-shaped angle piece (35) and a first abutment piece (36) are integrally formed on one side of the rear support member (3) away from the middle support member (2); the rear support member (3) is assembled and connected to the outer periphery of the power cavity (5) via the L-shaped angle piece (35); the first abutment piece (36) abuts against the side wall of the power cavity (5); and the power cavity (5) is assembled and fixed to the external shell.

3. The internal support platform of a cylindrical projector according to claim 2, characterized in that: A second abutment member (37) is provided on a side of the rear support member (3) away from the middle support member (2), and the second abutment member (37) abuts against the outer periphery of the power supply cavity (5); three L-shaped corner members (35) are provided, and the three L-shaped corner members (35) are arranged in a triangle on the rear support member (3).

4. The internal support platform of a cylindrical projector according to claim 2, characterized in that: The first abutment member (36) and the side wall of the power cavity (5) are both provided with power line threading holes (6).

5. The internal support platform of a cylindrical projector according to claim 1, characterized in that: Along the length direction of the internal support platform, two groups of the limiting members (32) are provided, and the two groups of the limiting members (32) are respectively provided on both sides of the rear support member (3).

6. The internal support platform of a cylindrical projector according to claim 1, characterized in that: The front support member (1), the middle support member (2) and the rear support member (3) are all arranged in a straight line.

7. The internal support platform of a cylindrical projector according to claim 6, characterized in that: The width of the front support member (1), the width of the rear support member (3) and the diameter of the intermediate support member (2) are all smaller than the width of the inner wall of the outer shell.

8. The internal support platform of a cylindrical projector according to claim 1, characterized in that: The front support member (1), the middle support member (2) and the rear support member (3) are all made of aluminum alloy.

9. The internal support platform of a cylindrical projector according to claim 2, characterized in that: The power cavity (5) is made of aluminum alloy.

10. The internal support platform of a cylindrical projector according to claim 1, characterized in that: Along the length direction of the internal support platform, the intermediate support member (2) is provided with a plurality of arc-shaped positioning members (25) at equal angles on the outer periphery of a side away from the front support member (1), and the arc-shaped positioning members (25) are integrally formed with the intermediate support member (2).

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