Projection ray machine

Abstract

The utility model belongs to the technical field of projectors, and discloses a projection light machine which comprises a shell assembly, a DMD chip, a lens, a TIR prism assembly and a filling assembly, the shell assembly is provided with a light source channel and a projection channel, the head end of the light source channel is provided with a light source assembly, the inside of the light source channel is provided with a lens assembly, and the tail end of the light source channel is communicated with the middle part of the projection channel; the DMD chip is arranged at the head end of the projection channel; the lens is arranged at the tail end of the projection channel; the TIR prism assembly is arranged in the middle of the projection channel and located at the tail end of the light source channel. The filling assembly is filled between the TIR prism assembly and the shell assembly, and the filling assembly is used for pressing the TIR prism assembly to the shell assembly. According to the utility model, the TIR prism assembly is tightly pressed on the shell assembly through the filling assembly, so that the installation stability of the TIR prism assembly is improved, and the TIR prism assembly is prevented from cracking.

Description

Technical Field

[0001] The utility model relates to the technical field of projectors, in particular to a projection optical machine. Background Art

[0002] Projection optical machine, also called projector or projector, is a device that reflects images or videos onto the screen through digital light processing technology or LCD liquid crystal imaging technology. According to the projection technology, projection optical machine can be divided into CRT projection, LCD projection, DLP projection and LCOS projection. For projection optical machine using DLP projection technology, the light emitted by the light source is collimated by the collimating lens and averaged by the compound eye lens, and then reflected by the reflector to the TIR prism. The TIR prism injects the light into the DMD chip at a certain angle. The DMD chip is a digital micromirror device, which is used to guide the time-sequential three-primary color light provided by the front projection light source to the DMD light incident surface. The drive control component controls the DMD chip to reflect according to the content of the projection image signal, and realizes forward light emission and light emitting off by controlling the rotation angle and direction of the DMD reflector.

[0003] For projection optical machines using DLP projection technology, the installation stability of the TIR prism on the base is crucial. If the TIR prism becomes loose, the quality of the projected image will be seriously affected. Currently, the TIR prism is fixed to the base with spring clips or screws, but both of them can easily cause the TIR prism to crack.

[0004] Therefore, there is an urgent need for a projection optical machine to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a projection optical machine, which uses a filling component to press a TIR prism component against a housing component, thereby improving the installation stability of the TIR prism component and preventing the TIR prism component from cracking.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Projection light machine, including:

[0008] A housing assembly, wherein the housing assembly is provided with a light source channel and a projection channel, a light source assembly is provided at the head end of the light source channel, a lens assembly is provided inside the light source channel, and a terminal end of the light source channel is connected to the middle of the projection channel;

[0009] A DMD chip is arranged at the head end of the projection channel;

[0010] A lens, arranged at the end of the projection channel;

[0011] A TIR prism assembly is disposed in the middle of the projection channel and at the end of the light source channel;

[0012] A filling component is filled between the TIR prism component and the shell component, and the filling component is used to press the TIR prism component against the shell component.

[0013] As an optional technical solution, the TIR prism assembly includes a first TIR prism and a second TIR prism, and the filling assembly includes a first filling piece and a second filling piece, the first filling piece is used to press the first TIR prism to the shell assembly, and the second filling piece is used to press the second TIR prism to the first TIR prism.

[0014] As an optional technical solution, the housing assembly is provided with a first limiting groove, and the first filling piece is embedded in the first limiting groove; and / or

[0015] The housing component is provided with a second limiting groove, and the second filling piece is embedded in the second limiting groove.

[0016] As an optional technical solution, the first limiting groove is located on a side of the first TIR prism away from the DMD chip; and / or

[0017] The second limiting groove is located on a side of the second TIR prism facing away from the first TIR prism.

[0018] As an optional technical solution, the first filling piece and the second filling piece are both made of foamed rubber material.

[0019] As an optional technical solution, the housing assembly includes:

[0020] A main housing, wherein the main housing is provided with a light source slot and a projection slot, the lens assembly is embedded in the light source slot, and the TIR prism assembly is embedded in the projection slot;

[0021] A left cover plate is detachably mounted on the left side of the main housing, and a left abutment portion is provided on a side of the left cover plate facing the light source slot, and the left abutment portion abuts against the left side of the lens assembly;

[0022] A right cover plate is detachably mounted on the right side of the main housing, and a right abutment portion is provided on a side of the right cover plate facing the light source slot, and the right abutment portion abuts against the right side of the lens assembly;

[0023] The left cover plate, the right cover plate and the main housing enclose the light source channel and the projection channel.

[0024] As an optional technical solution, a side edge of the light source slot and / or a side edge of the projection slot is provided with a clamping slot, and the clamping slot is used to avoid a clamping tool.

[0025] As an optional technical solution, the shell assembly also includes a mounting plate, the lens is mounted on the front end of the mounting plate, the main shell is mounted on the rear end of the mounting plate, the mounting plate is provided with an adjustment groove, and the fastener passes through the adjustment groove and is fixedly connected to the projection device.

[0026] As an optional technical solution, the projection optical machine also includes:

[0027] A DLP control device, the DLP control device is fixedly connected to the housing assembly, the DLP control device comprises a control board, and an end of the control board extending to one side of the DMD chip is provided with an avoidance groove;

[0028] A heat sink is arranged on one side of the control board where the avoidance groove is provided, and a contact portion of the heat sink passes through the avoidance groove and abuts against the DMD chip;

[0029] A first spring sheet is arranged between the heat sink and the shell assembly. A threaded fastener passes through the heat sink and the first spring sheet and is fixedly connected to the shell assembly. The first spring sheet is used to elastically push the control board against the DMD chip to make electrical contact between the control board and the DMD chip.

[0030] As an optional technical solution, the DLP control device also includes a second spring sheet, which is arranged on the side of the heat sink facing away from the DMD chip. The threaded fastener passes through the second spring sheet, the heat sink and the first spring sheet in sequence and is fixedly connected to the shell assembly. The second spring sheet is used to elastically push the heat sink to abut against the DMD chip.

[0031] The beneficial effects of the utility model are:

[0032] The projection optical machine provided by the utility model includes a shell assembly, a light source assembly, a lens assembly, a DMD chip, a lens, a TIR prism assembly and a filling assembly. The utility model uses the filling assembly to press the TIR prism assembly against the shell assembly to prevent the TIR prism assembly from loosening, ensure the projection quality, and prevent the TIR prism assembly from being crushed or cracked. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The utility model is further described in detail below according to the accompanying drawings and embodiments;

[0034] Figure 1 A schematic diagram of the structure of the projection optical machine according to the embodiment at a first viewing angle;

[0035] Figure 2 An exploded view of the projection optical machine described in the embodiment from a first viewing angle;

[0036] Figure 3 for Figure 2 A partial enlarged view of position A in the middle;

[0037] Figure 4 A schematic diagram of the structure of the second viewing angle of the projection optical machine described in the embodiment;

[0038] Figure 5 is a cross-sectional view of the projection light engine described in the embodiment;

[0039] Figure 6 for Figure 5 A partial enlarged view of position B in the middle;

[0040] Figure 7 It is a schematic structural diagram of the main shell described in the embodiment.

[0041] In the figure:

[0042] 1. Shell assembly; 11. Light source channel; 12. Projection channel; 13. Main shell; 131. First limiting groove; 132. Second limiting groove; 133. Light source groove; 134. Projection groove; 135. Clamping groove; 14. Left cover plate; 141. Left abutment portion; 15. Right cover plate; 151. Right abutment portion; 16. Mounting plate; 161. Adjustment groove;

[0043] 2. Light source components;

[0044] 3. Lens assembly;

[0045] 4.DMD chip;

[0046] 5. Lens;

[0047] 61. a first TIR prism; 62. a second TIR prism;

[0048] 71. a first filling piece; 72. a second filling piece;

[0049] 8. DLP control device; 81. Control panel;

[0050] 9. Heat dissipation components;

[0051] 10. The first shrapnel;

[0052] 101. The second shrapnel. DETAILED DESCRIPTION

[0053] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0054] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0057] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0058] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0059] like Figures 1 to 7 As shown, this embodiment provides a projection optical machine, which includes a shell component 1, a DMD chip 4, a lens 5, a TIR prism component and a filling component. The shell component 1 is provided with a light source channel 11 and a projection channel 12. The head end of the light source channel 11 is provided with a light source component 2, and the interior of the light source channel 11 is provided with a lens component 3. The end of the light source channel 11 is connected to the middle of the projection channel 12; the DMD chip 4 is arranged at the head end of the projection channel 12; the lens 5 is arranged at the end of the projection channel 12; the TIR prism component is arranged in the middle of the projection channel 12 and at the end of the light source channel 11; the filling component is filled between the TIR prism component and the shell component 1, and the filling component is used to press the TIR prism component to the shell component 1.

[0060] Specifically, the light emitted by the light source assembly 2 passes through the lens assembly 3 and the TIR prism assembly in sequence, and is refracted by the TIR prism assembly to the DMD chip 4. The projection light reflected by the DMD chip 4 passes through the TIR prism assembly and the lens 5, and is finally projected onto the screen. In this embodiment, the filling assembly presses the TIR prism assembly against the housing assembly 1, which can improve the installation stability of the TIR prism assembly in the housing assembly 1, and the filling assembly will not crush the TIR prism assembly, thereby preventing the bonding surface of the TIR prism assembly from cracking.

[0061] Optionally, the TIR prism assembly includes a first TIR prism 61 and a second TIR prism 62, and the filling assembly includes a first filling piece 71 and a second filling piece 72, the first filling piece 71 is used to press the first TIR prism 61 to the shell assembly 1, and the second filling piece 72 is used to press the second TIR prism 62 to the first TIR prism 61.

[0062] Specifically, the first TIR prism 61 and the second TIR prism 62 are fixedly connected by gluing, and the first filling piece 71 is used to press the first TIR prism 61 against the shell assembly 1 to ensure the installation stability of the first TIR prism 61 in the shell assembly 1, and the second filling piece 72 is used to press the second TIR prism 62 against the first TIR prism 61 to ensure the installation stability of the second TIR prism 62 and the first TIR prism 61 in the shell assembly 1, and can also reduce the tangential force on the gluing surface between the first TIR prism 61 and the second TIR prism 62, thereby avoiding cracks in the gluing surface between the first TIR prism 61 and the second TIR prism 62.

[0063] Optionally, the housing assembly 1 is provided with a first limiting groove 131 , and the first filling piece 71 is embedded in the first limiting groove 131 to prevent the first filling piece 71 from being separated from a preset installation position.

[0064] Optionally, the housing assembly 1 is provided with a second limiting groove 132 , and the second filling piece 72 is embedded in the second limiting groove 132 to prevent the second filling piece 72 from being separated from a preset installation position.

[0065] Optionally, the first limiting groove 131 is located on the side of the first TIR prism 61 away from the DMD chip 4. The DMD chip 4 generates heat when working. In order to prevent the first filling member 71 from excessively deforming in a high temperature environment, the first filling member 71 is arranged on the side of the first TIR prism 61 away from the DMD chip 4 in this embodiment, so as to extend the distance between the DMD chip 4 and the first filling member 71.

[0066] Optionally, the second limiting groove 132 is located on a side of the second TIR prism 62 away from the first TIR prism 61. Prolonging the distance between the DMD chip 4 and the second filling member 72 can prevent the second filling member 72 from being excessively deformed due to heat.

[0067] In this embodiment, the first filler 71 and the second filler 72 are both made of foamed rubber material. The first filler 71 and the first TIR prism 61, as well as the second filler 72 and the second TIR prism 62, are in flexible contact, so as to prevent the surfaces of the first TIR prism 61 and the second TIR prism 62 from being crushed.

[0068] Optionally, the shell assembly 1 includes a main shell 13, a left cover plate 14 and a right cover plate 15, the main shell 13 is provided with a light source groove 133 and a projection groove 134, the lens assembly 3 is embedded in the light source groove 133, and the TIR prism assembly is embedded in the projection groove 134; the left cover plate 14 is detachably installed on the left side of the main shell 13, and the side of the left cover plate 14 facing the light source groove 133 is provided with a left abutting portion 141, and the left abutting portion 141 abuts against the left side of the lens assembly 3; the right cover plate 15 is detachably installed on the right side of the main shell 13, and the side of the right cover plate 15 facing the light source groove 133 is provided with a right abutting portion 151, and the right abutting portion 151 abuts against the right side of the lens assembly 3; the left cover plate 14, the right cover plate 15 and the main shell 13 enclose a light source channel 11 and a projection channel 12.

[0069] In this embodiment, the left cover plate 14 and the right cover plate 15 are respectively installed on the left and right sides of the main shell 13 by using threaded fasteners. The left cover plate 14 and the right cover plate 15 can be quickly removed to facilitate embedding the lens assembly 3 into the light source groove 133 and embedding the TIR prism assembly into the projection groove 134; after installing the left cover plate 14 and the right cover plate 15, the left abutting portion 141 abuts against the left side of the lens assembly 3, and the right abutting portion 151 abuts against the right side of the lens assembly 3, so as to position the lens assembly 3 left and right.

[0070] Optionally, a side edge of the light source slot 133 and / or a side edge of the projection slot 134 is provided with a clamping slot 135 , and the clamping slot 135 is used to avoid a clamping tool.

[0071] In this embodiment, the sides of the light source slot 133 and the projection slot 134 are both provided with clamping slots 135 , and the lens assembly 3 and the TIR prism assembly can be quickly taken out by inserting a clamping tool into the clamping slot 135 .

[0072] Optionally, the housing assembly 1 further includes a mounting plate 16, the lens 5 is mounted on the front end of the mounting plate 16, the main housing 13 is mounted on the rear end of the mounting plate 16, the mounting plate 16 is provided with an adjustment slot 161, and the fastener is fixedly connected to the projection device after passing through the adjustment slot 161. By changing the installation position of the mounting plate 16 on the projection device, the projection angle of the projection optical machine can be adjusted to meet the actual projection angle requirements.

[0073] Optionally, the projection optical machine also includes a DLP control device 8, a heat sink 9 and a first spring clip 10. The DLP control device 8 is fixedly connected to the shell assembly 1. The DLP control device 8 includes a control board 81. The control board 81 extends to one end of the DMD chip 4 and is provided with a avoidance groove; the heat sink 9 is arranged on the side of the control board 81 where the avoidance groove is provided, and the contact portion of the heat sink 9 passes through the avoidance groove and abuts against the DMD chip 4; the first spring clip 10 is arranged between the heat sink 9 and the shell assembly 1, and the threaded fastener passes through the heat sink 9 and the first spring clip 10 and is fixedly connected to the shell assembly 1. The first spring clip 10 is used to elastically push the control board 81 to abut against the DMD chip 4, so that the control board 81 is in electrical contact with the DMD chip 4.

[0074] Specifically, after the threaded fastener passes through the heat sink 9 and the first spring sheet 10 and is fixedly connected to the shell assembly 1, the first spring sheet 10 pushes the control board 81 toward the DMD chip 4, so that the control board 81 is in electrical contact with the DMD chip 4. The temperature of the DMD chip 4 in the working state is greatly different from that in the non-working state, and the deformation is large. This embodiment uses the first spring sheet 10 to elastically push the control board 81, which can ensure that the control board 81 is always in contact with the DMD chip 4 to ensure the stability of the electrical connection; the heat sink 9 can increase the heat dissipation speed of the DMD chip 4 and reduce the operating temperature of the DMD chip 4.

[0075] Optionally, the DLP control device 8 further includes a second spring sheet 101, which is disposed on a side of the heat sink 9 away from the DMD chip 4. The threaded fastener sequentially passes through the second spring sheet 101, the heat sink 9 and the first spring sheet 10 and is fixedly connected to the housing assembly 1. The second spring sheet 101 is used to elastically push the heat sink 9 against the DMD chip 4. In this embodiment, the second spring sheet 101 is used to elastically push the heat sink 9 so that the heat sink 9 is always in contact with the DMD chip 4 to ensure heat dissipation efficiency.

[0076] Optionally, the light source assembly 2 includes a light source component and heat dissipation fins, both of which are existing products, and the working principles of using the light source component to emit light and using the heat dissipation fins to dissipate heat are no longer described in detail.

[0077] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A projection optical machine, characterized in that: include: A housing component (1), the housing component (1) being provided with a light source channel (11) and a projection channel (12), a light source component (2) being provided at the head end of the light source channel (11), a lens component (3) being provided inside the light source channel (11), and a terminal end of the light source channel (11) being connected to a middle portion of the projection channel (12); A DMD chip (4) is arranged at the head end of the projection channel (12); A lens (5) is arranged at the end of the projection channel (12); A TIR prism assembly is arranged in the middle of the projection channel (12) and located at the end of the light source channel (11); A filling component is filled between the TIR prism component and the shell component (1), and the filling component is used to press the TIR prism component against the shell component (1).

2. The projection optical machine according to claim 1, characterized in that: The TIR prism assembly includes a first TIR prism (61) and a second TIR prism (62); the filling assembly includes a first filling piece (71) and a second filling piece (72); the first filling piece (71) is used to press the first TIR prism (61) against the shell assembly (1); and the second filling piece (72) is used to press the second TIR prism (62) against the first TIR prism (61).

3. The projection optical machine according to claim 2, characterized in that: The housing assembly (1) is provided with a first limiting groove (131), and the first filling piece (71) is embedded in the first limiting groove (131); and / or The housing assembly (1) is provided with a second limiting groove (132), and the second filling piece (72) is embedded in the second limiting groove (132).

4. The projection optical machine according to claim 3, characterized in that: The first limiting groove (131) is located on a side of the first TIR prism (61) facing away from the DMD chip (4); and / or The second limiting groove (132) is located on a side of the second TIR prism (62) facing away from the first TIR prism (61).

5. The projection optical machine according to claim 2, characterized in that: The first filling piece (71) and the second filling piece (72) are both made of foamed rubber material.

6. The projection optical machine according to claim 1, characterized in that: The housing assembly (1) comprises: A main housing (13), wherein the main housing (13) is provided with a light source slot (133) and a projection slot (134), the lens assembly (3) is embedded in the light source slot (133), and the TIR prism assembly is embedded in the projection slot (134); A left cover plate (14) is detachably mounted on the left side of the main housing (13); a left abutment portion (141) is provided on the side of the left cover plate (14) facing the light source slot (133); and the left abutment portion (141) abuts against the left side of the lens assembly (3); A right cover plate (15) is detachably mounted on the right side of the main housing (13); a right abutment portion (151) is provided on a side of the right cover plate (15) facing the light source slot (133); and the right abutment portion (151) abuts against the right side of the lens assembly (3); The left cover plate (14), the right cover plate (15) and the main housing (13) enclose the light source channel (11) and the projection channel (12).

7. The projection optical machine according to claim 6, characterized in that: A clamping groove (135) is provided on a side edge of the light source groove (133) and / or a side edge of the projection groove (134), and the clamping groove (135) is used to avoid a clamping tool.

8. The projection optical machine according to claim 6, characterized in that: The housing assembly (1) further comprises a mounting plate (16), the lens (5) being mounted on the front end of the mounting plate (16), the main housing (13) being mounted on the rear end of the mounting plate (16), the mounting plate (16) being provided with an adjustment slot (161), and a fastener passing through the adjustment slot (161) and then being fixedly connected to the projection device.

9. The projection optical machine according to claim 1, characterized in that: The projection optical machine also includes: A DLP control device (8), the DLP control device (8) being fixedly connected to the housing assembly (1), the DLP control device (8) comprising a control board (81), an end of the control board (81) extending to one side of the DMD chip (4) being provided with an avoidance groove; A heat sink (9) is arranged on a side of the control board (81) where the avoidance groove is provided, and a contact portion of the heat sink (9) passes through the avoidance groove and abuts against the DMD chip (4); A first spring sheet (10) is arranged between the heat sink (9) and the housing assembly (1); a threaded fastener passes through the heat sink (9) and the first spring sheet (10) and is fixedly connected to the housing assembly (1); the first spring sheet (10) is used to elastically push the control board (81) against the DMD chip (4) so ​​that the control board (81) is in electrical contact with the DMD chip (4).

10. The projection optical machine according to claim 9, characterized in that: The DLP control device (8) further comprises a second spring sheet (101), wherein the second spring sheet (101) is arranged on a side of the heat sink (9) facing away from the DMD chip (4), and the threaded fastener passes through the second spring sheet (101), the heat sink (9) and the first spring sheet (10) in sequence and is fixedly connected to the housing assembly (1), and the second spring sheet (101) is used to elastically push the heat sink (9) to abut against the DMD chip (4).

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