CN213659166U - Electromagnetic shielding projection display device - Google Patents
Electromagnetic shielding projection display device Download PDFInfo
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- CN213659166U CN213659166U CN202021888769.9U CN202021888769U CN213659166U CN 213659166 U CN213659166 U CN 213659166U CN 202021888769 U CN202021888769 U CN 202021888769U CN 213659166 U CN213659166 U CN 213659166U
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Abstract
The utility model discloses an electromagnetic shielding projection display device, which relates to the technical field of electromagnetic shielding and comprises a projector mainframe and a display screen, wherein the projector mainframe is internally provided with an installation box for installing projection equipment, the projector mainframe and the installation box are mutually connected and fixed through a fixed frame, one side of the surface of the projector mainframe is provided with a connecting shell, the surface of the connecting shell is fixedly provided with a display chip for image digitization, the output end of the display chip is provided with a main lens cone, the device and an application method, as the volume of the projector mainframe is smaller, only a small cost is needed to spray conductive paint, the electromagnetic shielding function can be realized, the lens cone of the projector adopts a waveguide tube, the length and the diameter of the waveguide tube can be selected according to the size and appearance requirements of the waveguide tube, and the light of a projection system, the electromagnetic radiation of the whole system can be shielded by propagating in the waveguide and projecting on a display screen.
Description
Technical Field
The utility model relates to an electromagnetic shield technical field specifically is an electromagnetic shield projection display device.
Background
With the rapid development of electromagnetic technology, electromagnetic application is increasingly wide, the use frequency band of electromagnetic waves is continuously widened, and in military, political offices, companies or other conference rooms or other occasions needing confidentiality, the display equipment needs to be integrally shielded, and the electromagnetic interference protection and electromagnetic shielding capability of the display equipment are also high. In order to ensure the shielding effectiveness, the shielding effectiveness of the display device in the conference room cannot be lower than the shielding effectiveness. However, the conventional display device, such as a liquid crystal or a projector, cannot achieve electromagnetic shielding, and can only perform electromagnetic shielding on the whole conference room, which makes the cost very high.
To this end, we propose an electromagnetic shielding projection display device to solve the above problems.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides an electromagnetic shield projection display device to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an electromagnetic shield projection display device, includes projector mainframe and display screen, the inside of projector mainframe is provided with the install bin that is used for installing projection equipment, projector mainframe and install bin carry out interconnect through fixed frame and fix, surface one side of projector mainframe is provided with connects the shell, the fixed surface of connecting the shell installs the display chip who is used for the image digitization, the output of display chip is provided with the main lens cone, the output of main lens cone is provided with the camera lens that is used for the projection, the angle of vision of camera lens is 80, the position of placing of display screen is just to the projection direction of camera lens.
The technical scheme is further optimized, the size of the display screen is selected within the range of 20-80 inches, the width-to-height ratio of the display screen can be 16:9, 16:10 or 4:3, and the distance between the placement position of the display screen and the placement position of the lens is within the range of 300mm-3000 mm.
Further optimizing the technical scheme, the inner surfaces of the projector mainframe box and the installation box are coated with a layer of conductive paint, the conductive paint is silver-copper conductive paint, and after a paint film is dried, the conductive paint is used for shielding electromagnetic radiation generated by projection equipment in the projector mainframe box and the installation box.
Further optimizing the technical scheme, the length of the main lens cone is less than 28mm, the diameter of the main lens cone is less than 10mm, and the main lens cone adopts a shielding waveguide tube and is used for preventing electromagnetic waves from leaking and shielding electromagnetic radiation.
An application method of an electromagnetic shielding projection display device is designed based on a DLP technology, a DMD mainboard, a DLP control panel, a signal interface board, driving software and an RGB three-color LED light source are arranged in an installation box, and display chips are lapped by the DMD chips.
Further optimizing the technical scheme, the application method is designed based on the LCD technology, an LCD main board, an LCD control panel, a signal interface board, driving software and an RGB three-color LED light source are arranged in the installation box, and the display chips are lapped by adopting LCD chips.
Further optimizing the technical scheme, the application method is designed based on LCOS technology, an LCOS mainboard, an LCOS control panel, a signal interface board, driving software and RGB three-color LED light sources are arranged in the installation box, and the display chips are overlapped by the LCOS chips.
Compared with the prior art, the utility model provides an electromagnetic shield projection display device possesses following beneficial effect:
according to the electromagnetic shielding projection display device and the application method, the volume of the projector main case is small, so that the electromagnetic shielding function can be realized only by spraying the conductive paint with low cost, the electromagnetic radiation of the lens of the projector is shielded by the waveguide tube, the light of the projection system is transmitted in the waveguide tube and then projected on the display screen, and the electromagnetic radiation of the whole system can be shielded.
Drawings
Fig. 1 is a schematic structural diagram of an electromagnetic shielding projection display device according to the present invention.
In the figure: 1. a projector main case; 2. installing a box; 3. a fixed frame; 4. connecting the shell; 5. a display chip; 6. a main barrel; 7. a lens; 8. a display screen.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1, an electromagnetic shielding projection display device includes a projector case 1 and a display screen 8, wherein an installation box 2 for installing a projection device is disposed inside the projector case 1, the projector case 1 and the installation box 2 are connected and fixed to each other through a fixing frame 3, a connection housing 4 is disposed on one side of the surface of the projector case 1, a display chip 5 for image digitization is fixedly mounted on the surface of the connection housing 4, a main lens barrel 6 is disposed at an output end of the display chip 5, a lens 7 for projection is disposed at an output end of the main lens barrel 6, a field angle of the lens 7 can be changed within a certain range (10-80 °) according to a requirement of an application scene, and a placement position of the display screen 8 is opposite to a projection direction of the lens 7.
Specifically, the size of the display screen 8 is selected from the range of 20-80 inches, the width-to-height ratio of the display screen 8 can be 16:9, 16:10 or 4:3, and the distance between the placement position of the display screen 8 and the placement position of the lens 7 is within the range of 300mm-3000 mm.
Specifically, the inner surfaces of the projector main case 1 and the installation case 2 are coated with a layer of conductive paint, the conductive paint is silver-copper conductive paint, and after the paint film is dried, the conductive paint is used for shielding electromagnetic radiation generated by projection equipment in the projector main case 1 and the installation case 2.
Specifically, the length of the main barrel 6 is less than 28mm, the diameter is less than 10mm, and the main barrel 6 adopts a shielding waveguide tube for preventing electromagnetic waves from leaking and shielding electromagnetic radiation.
Example two:
an application method of an electromagnetic shielding projection display device is designed based on a DLP technology, a DMD mainboard, a DLP control panel, a signal interface board, driving software and an RGB three-color LED light source are arranged in an installation box 2, and a display chip 5 is lapped by adopting a DMD chip.
Various hardware and software devices arranged in the installation box 2 adopt commercially available circuit control boards, LED light source groups and program software.
Example three:
an application method of an electromagnetic shielding projection display device is designed based on an LCD technology, an LCD main board, an LCD control board, a signal interface board, driving software and an RGB three-color LED light source are arranged in an installation box 2, and a display chip 5 is lapped by the LCD chip.
Various hardware and software devices arranged in the installation box 2 adopt commercially available circuit control boards, LED light source groups and program software.
Example four:
an application method of an electromagnetic shielding projection display device is designed based on an LCOS technology, an LCOS mainboard, an LCOS control panel, a signal interface board, driving software and an RGB three-color LED light source are arranged in an installation box 2, and a display chip 5 is overlapped by the LCOS chip.
Various hardware and software devices arranged in the installation box 2 adopt commercially available circuit control boards, LED light source groups and program software.
Example five:
the utility model provides an electromagnetic shield projection display device, includes projector mainframe 1 and display screen 8, the inside of projector mainframe 1 is provided with install bin 2 that is used for installing projection equipment, projector mainframe 1 and install bin 2 carry out interconnect through fixed frame 3 and fix, surface one side of projector mainframe 1 is provided with connects shell 4, the fixed surface of connecting shell 4 installs and is used for the digital display chip 5 of image, the output of display chip 5 is provided with main lens cone 6, main lens cone 6's output is provided with camera lens 7 that is used for the projection, the angle of view of camera lens 7 can change according to the needs of using the scene, the position of placing of display screen 8 is just to the projection direction of camera lens 7.
Specifically, the size of the display screen 8 is selected from the range of 20-80 inches, the width-to-height ratio of the display screen 8 can be 16:9, 16:10 or 4:3, and the distance between the placement position of the display screen 8 and the placement position of the lens 7 is within the range of 300mm-3000 mm.
Specifically, the inner surfaces of the projector main case 1 and the installation case 2 are coated with a layer of conductive paint, the conductive paint is silver-copper conductive paint, and after the paint film is dried, the conductive paint is used for shielding electromagnetic radiation generated by projection equipment in the projector main case 1 and the installation case 2.
Specifically, the length of the main barrel 6 is less than 28mm, the diameter is less than 10mm, and the main barrel 6 adopts a shielding waveguide tube for preventing electromagnetic waves from leaking and shielding electromagnetic radiation.
The experimental results of the five examples show that: according to the electromagnetic shielding projection display device and the application method, the size of the projector main case 1 is small, so that the electromagnetic shielding function can be realized only by spraying the conductive paint with low cost, electromagnetic radiation of the lens 7 of the projector is shielded through the waveguide tube, light rays of a projection system are transmitted in the waveguide tube and then projected onto the display screen 8, and the electromagnetic radiation of the whole system can be shielded.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The electromagnetic shielding projection display device is characterized by comprising a projector mainframe box (1) and a display screen (8), wherein an installation box (2) for installing projection equipment is arranged in the projector mainframe box (1), the projector mainframe box (1) and the installation box (2) are fixedly connected with each other through a fixed frame (3), one side of the surface of the projector mainframe box (1) is provided with a connection shell (4), the surface of the connection shell (4) is fixedly provided with a display chip (5) for image digitization, the output end of the display chip (5) is provided with a main lens barrel (6), the output end of the main lens barrel (6) is provided with a lens (7) for projection, the lens (7) can adopt different field angles according to application requirements, and the placement position of the display screen (8) is just opposite to the projection direction of the lens (7), the inside surface spraying of projector mainframe box (1) and install bin (2) has the one deck conductive paint, and the conductive paint chooses for use silver-copper conductive paint, treats that the paint film is dry after, is used for shielding the electromagnetic radiation that projection equipment produced in projector mainframe box (1) and install bin (2), the length of main lens cone (6) is less than 28mm, and the diameter is less than 10mm, main lens cone (6) adopt shielding waveguide for prevent that the electromagnetic wave from leaking, shield electromagnetic radiation.
2. An electromagnetically shielded projection display apparatus as claimed in claim 1, wherein the size of said display screen (8) is selected from the range of 20-80 inches, the aspect ratio of said display screen (8) may be 16:9, 16:10 or 4:3, and the distance between the position where said display screen (8) is placed and the position where said lens (7) is placed is in the range of 300mm-3000 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021888769.9U CN213659166U (en) | 2020-09-02 | 2020-09-02 | Electromagnetic shielding projection display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021888769.9U CN213659166U (en) | 2020-09-02 | 2020-09-02 | Electromagnetic shielding projection display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213659166U true CN213659166U (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021888769.9U Active CN213659166U (en) | 2020-09-02 | 2020-09-02 | Electromagnetic shielding projection display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213659166U (en) |
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- 2020-09-02 CN CN202021888769.9U patent/CN213659166U/en active Active
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