CN209912456U - Rear projection lamp box - Google Patents
Rear projection lamp box Download PDFInfo
- Publication number
- CN209912456U CN209912456U CN201920716745.6U CN201920716745U CN209912456U CN 209912456 U CN209912456 U CN 209912456U CN 201920716745 U CN201920716745 U CN 201920716745U CN 209912456 U CN209912456 U CN 209912456U
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- rear projection
- box
- end point
- projector
- projection screen
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- Transforming Electric Information Into Light Information (AREA)
Abstract
The utility model relates to a lamp house field is a rear projection lamp house very much. A rear projection lamp box comprises a box body and a projector arranged on the side wall inside or outside the box body, wherein a rear projection screen is arranged on one side wall of the box body, and an included angle alpha formed between the upper end point of the bottom surface of the projector and the lower end point of the rear projection screen and the upper end point of the rear projection screen1Comprises the following steps: alpha is not more than 15 degrees1Not more than 35 degrees, and an included angle alpha formed between the lower end point of the bottom surface of the projector, the upper end point of the rear projection screen and the lower end point of the projection screen2Comprises the following steps: 90 degree<α2Not more than 120 degrees, and the width from the lower endpoint of the upper surface of the projector to the back projection screenThe distance g of the extension line in the direction of the degree is as follows: g is more than or equal to 0.1cm and less than or equal to 50 cm. The utility model aims to provide a: the utility model provides a rear projection lamp box, this lamp box change advertisement simple and convenient, labour saving and time saving to the small, the thickness of box is thin.
Description
Technical Field
The utility model relates to a lamp house field is a rear projection lamp house very much.
Background
The number of advertisement lamp boxes around the world is huge, most of the lamp boxes are static pictures, the background is white, a great deal of time and manpower are needed for replacing advertisements of the lamp boxes, and the advertisement industry tries to replace the static lamp boxes with digital dynamic display lamp boxes.
The existing light box can only use one advertisement and can be replaced for weeks or months. In the process of changing advertisements, new pictures are sent to a printing company for printing, a construction team removes the old advertisements and installs the new advertisements. The whole process is time-consuming and labor-consuming, and the cost and time of printing pictures and the time and cost of replacing new advertisements must be added.
As shown in fig. 1, in the conventional rear projection light box, a projector is placed in the light box for projection, a large amount of space is required, the thickness of the projector is about 100cm, and in places with large traffic, such as subway stations, airports, train stations, etc., the large structure causes inconvenience to users.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the defects are overcome, and the back projection lamp box is simple and convenient in advertisement replacement, time-saving and labor-saving, and small in size and thin in thickness.
The utility model discloses a following technical scheme realizes: a rear projection lamp box comprises a box body and a projector arranged on the side wall inside or outside the box body, wherein a rear projection screen is arranged on one side wall of the box body, and an included angle alpha formed between the upper end point of the bottom surface of the projector and the lower end point of the rear projection screen and the upper end point of the rear projection screen1Comprises the following steps: alpha is not more than 15 degrees1Not more than 35 degrees, and an included angle alpha formed between the lower end point of the bottom surface of the projector, the upper end point of the rear projection screen and the lower end point of the projection screen2Comprises the following steps: 90 degree<α2Not more than 120 degrees, the distance g from the lower endpoint of the upper surface of the projector to the extension line of the width direction of the rear projection screen is as follows: g is more than or equal to 0.1cm and less than or equal to 50 cm.
For better implementation of the scheme, the following optimization scheme is also provided:
in order to avoid the projector from being exposed outside, when the projector is arranged on the side wall outside the box body, the rear projection lamp box further comprises a protective shell sleeved on the projector.
Preferably, the rear projection screen is coated with screen paint or laid with rear projection material coated with screen paint on the side wall receiving the projection light. The rear projection material may be acrylic, glass or other light transmissive material sprayed with a screen coating.
The interior of the case may be various colors, and in order to facilitate imaging and to avoid reflection, it is preferable that the interior of the case is black.
Preferably, the number of the box bodies is two, and the two box bodies are arranged in a back-to-back mirror image mode. When the backs of the two boxes are mutually attached, the two boxes can also share one back plate to separate the two boxes.
Preferably, the number of the box bodies is multiple, and the box bodies are distributed along the same circumferential direction and are arranged at different circumferential positions.
Preferably, the rear projection lamp box is distributed layer by layer along the same axial direction, each layer is provided with a plurality of box bodies, and each box body in each layer is distributed along the same circumferential direction and is arranged on different circumferential positions.
Compared with the prior art, the utility model has the advantages that:
1. the utility model provides a rear projection lamp house is equipped with the rear projection screen of the projecting apparatus formation of image of being convenient for in this lamp house, when changing the advertisement, only need to change the projecting apparatus projected image can, whole process is simple and convenient, labour saving and time saving to the small of this lamp house, thickness is thin.
2. The utility model discloses the spraying has screen coating or has laid the rear-projection material who has sprayed screen coating on well back projection screen to the projecting apparatus forms images on back projection screen.
3. The utility model discloses still have can practice thrift advantages such as cost of labor, suitability are strong and facilitate promotion.
Drawings
FIG. 1 is a schematic structural diagram of a conventional rear projection lamp box;
FIG. 2 is a schematic structural diagram according to a first embodiment;
FIG. 3 is a schematic structural diagram according to a second embodiment;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a schematic structural diagram of the third embodiment
FIG. 6 is a side view of FIG. 5;
FIG. 7 is a top view of FIG. 5;
FIG. 8 is a schematic structural view according to a fourth embodiment;
FIG. 9 is a schematic structural view of the fifth embodiment;
FIG. 10 is a side view of FIG. 9;
FIG. 11 is a schematic structural view of the sixth embodiment;
fig. 12 is a schematic structural diagram of the seventh embodiment.
Description of reference numerals: the projection screen comprises a 1-box body, an 11-rear projection screen, a 2-projector, a 3-protective shell, an upper end point of the bottom surface of the A-projector, a lower end point of the B-rear projection screen, an upper end point of the C-rear projection screen, a lower end point of the bottom surface of the D-projector, a lower end point of the upper surface of the E-projector, a thickness of the h-box body, a width of the f-rear projection screen and a length of the j-rear projection screen.
Detailed Description
The invention is explained in detail below with reference to the accompanying drawings:
example one
As shown in fig. 2, a rear projection lamp box comprises a box body 1 and a projector 2 arranged inside the box body 1, wherein a rear projection screen 11 is arranged on one side wall of the box body 1, and an included angle α formed between an upper end point a of the bottom surface of the projector 2, a lower end point B of the rear projection screen 11 and an upper end point C of the rear projection screen 11127.1 °, an angle α formed between a lower end point D of the bottom surface of the projector 2, an upper end point C of the rear projection screen 11, and a lower end point B of the projection screen 112The distance g from the lower end point E of the upper surface of the projector 2 to the extension line in the width direction of the rear projection screen 11 becomes 38.94cm, which is 113.4 °. The available rear projection screen 11 is a 100-inch 16:9 screen, the width f of the rear projection screen is 125cm, the length j of the rear projection screen is 220cm, and the thickness h of the box body is 56.99cm, so that compared with the conventional rear projection light box, the thickness h shown in fig. 1 is 91cm greatly reduced. The case 1 may be made of aluminum alloy, stainless steel, fireproof plastic, or other fireproof materials. The interior of the box body can be increased and decreasedAnd the temperature system controls the temperature to be below 35 ℃ so as to prolong the service life of the projector 2. The enclosure 1 may be mounted on a wall, hung or suspended from a ceiling, added to a frame placed on the ground, or otherwise mounted and secured. Preferably, the projector 2 is an ultra-short-focus projector of a laser light source. The projector 2 may have a playing function, or may be connected to a computer, a player, a set-top box, or other devices having a playing function.
Preferably, the rear projection screen 11 has screen paint sprayed on the side wall receiving the projection light or is laid with rear projection material sprayed with screen paint. The rear projection screen 11 is made of a light-permeable material, and may be any one of bulletproof glass, fireproof plastic, acrylic plate, ruggedized plate, and plastic film. The rear projection material may be acrylic, glass or other light transmissive material sprayed with a screen coating.
For convenience of image formation and avoidance of reflection of light, the inside of the case 1 is preferably black.
Example two
As shown in fig. 3-4, a rear projection lamp box comprises a box body 1 and a projector 2 arranged on the outer side wall of the box body 1, wherein a rear projection screen 11 is arranged on one side wall of the box body 1, and an included angle α is formed between an upper end point a of the bottom surface of the projector 2, a lower end point B of the rear projection screen 11 and an upper end point C of the rear projection screen 11127.1 °, an angle α formed between a lower end point D of the bottom surface of the projector 2, an upper end point C of the rear projection screen 11, and a lower end point B of the projection screen 112The distance g from the lower end point E of the upper surface of the projector 2 to the extension line in the width direction of the rear projection screen 11 becomes 38.94cm, which is 113.4 °. The available rear projection screen 11 is a 100-inch 16:9 screen, the width f of the rear projection screen is 125cm, the length j of the rear projection screen is 220cm, and the thickness h of the box body is 56.99cm, so that compared with the conventional rear projection light box, the thickness h shown in fig. 1 is 91cm greatly reduced. The case 1 may be made of aluminum alloy, stainless steel, fireproof plastic, or other fireproof materials. A cooling system can be added in the box body, so that the temperature is controlled below 35 ℃, and the service life of the projector 2 is prolonged. The case 1 can be mounted on a wall, hung or hung on a ceiling, and added with a frameThe shelf rests on the ground, or other mounting means. Preferably, the projector 2 is an ultra-short-focus projector of a laser light source. The projector 2 may have a playing function, or may be connected to a computer, a player, a set-top box, or other devices having a playing function.
In order to avoid the projector being exposed, when the projector 2 is disposed on the outer sidewall of the box 1, the rear projection light box further includes a protective housing 3 sleeved on the projector 2.
Preferably, the rear projection screen 11 has screen paint sprayed on the side wall receiving the projection light or is laid with rear projection material sprayed with screen paint. The rear projection screen 11 is made of a light-permeable material, and may be any one of bulletproof glass, fireproof plastic, acrylic plate, ruggedized plate, and plastic film. The rear projection material may be acrylic, glass or other light transmissive material sprayed with a screen coating.
For convenience of image formation and avoidance of reflection of light, the inside of the case 1 is preferably black.
EXAMPLE III
5-7, compared with the second embodiment, further, the redundant part of the case 1 can be removed along the plane where ABCD is located and the mirror surface of the plane where ABCD is located, so that the volume of the case is further reduced.
Example four
As shown in fig. 8, further, compared to the third embodiment, the mounting area of the projector 2 on the housing 1 can be reduced (the area where the projector lens can be mounted is left) so that the volume of the housing can be further reduced.
EXAMPLE five
As shown in fig. 9-10, the present embodiment is different from the second embodiment in that: the number of the box bodies 1 is two, and the two box bodies 1 are arranged back to back in a mirror image mode.
EXAMPLE six
As shown in fig. 11, the present embodiment is different from the first embodiment in that: the number of the box bodies 1 is multiple, and the box bodies 1 are distributed along the same circumferential direction and are arranged at different circumferential positions.
EXAMPLE seven
As shown in fig. 12, the present embodiment is different from the first embodiment in that: the rear projection lamp box is distributed layer by layer along the same axial direction, a plurality of box bodies 1 are arranged in each layer, and each box body 1 in each layer is distributed along the same circumferential direction and is arranged on different circumferential positions.
The above cases are sample cases, and different furnishing and arranging modes can be designed according to different environments, different designs and different purposes.
While the present invention has been shown and described with reference to particular embodiments and alternatives thereof, it will be understood that various changes and modifications can be made without departing from the spirit and scope of the invention. It is understood, therefore, that the invention is not to be limited, except as by the appended claims and their equivalents.
Claims (7)
1. A rear projection lamp box is characterized in that: comprises a box body (1) and a projector (2) arranged on the inner side wall of the box body (1) or the outer side wall of the box body (1), wherein a rear projection screen (11) is arranged on one side wall of the box body (1), and an included angle alpha formed between an upper end point (A) of the bottom surface of the projector (2) and a lower end point (B) of the rear projection screen (11) and an upper end point (C) of the rear projection screen (11)1Comprises the following steps: alpha is not more than 15 degrees1Not more than 35 degrees, and an included angle alpha formed between the lower end point (D) of the bottom surface of the projector (2), the upper end point (C) of the rear projection screen (11) and the lower end point (B) of the projection screen (11)2Comprises the following steps: 90 degree<α2Is less than or equal to 120 degrees, and the distance g from the lower endpoint (E) of the upper surface of the projector (2) to the extension line of the width direction of the rear projection screen (11) is as follows: g is more than or equal to 0.1cm and less than or equal to 50 cm.
2. A rear projection light box according to claim 1, characterized in that: when projecting apparatus (2) set up on box (1) outside lateral wall, rear projection lamp house still includes protective housing (3) of cover locating on projecting apparatus (2).
3. A rear projection light box according to claim 1, characterized in that: the rear projection screen (11) is coated with screen paint or laid with rear projection material coated with screen paint on the side wall for receiving projection light.
4. A rear projection light box according to claim 1, characterized in that: the interior of the box body (1) is black.
5. A rear projection light box according to claim 1, characterized in that: the number of the box bodies (1) is two, and the two box bodies (1) are arranged back to back in a mirror image mode.
6. A rear projection light box according to claim 1, characterized in that: the number of the box bodies (1) is multiple, and the box bodies (1) are distributed along the same circumferential direction and are arranged at different circumferential positions.
7. A rear projection light box according to claim 1, characterized in that: the back projection lamp box is distributed layer by layer along the same axial direction, a plurality of box bodies (1) are arranged in each layer, and each box body (1) in each layer is distributed along the same circumferential direction and is arranged on different circumferential positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920716745.6U CN209912456U (en) | 2019-05-17 | 2019-05-17 | Rear projection lamp box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920716745.6U CN209912456U (en) | 2019-05-17 | 2019-05-17 | Rear projection lamp box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209912456U true CN209912456U (en) | 2020-01-07 |
Family
ID=69048453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920716745.6U Expired - Fee Related CN209912456U (en) | 2019-05-17 | 2019-05-17 | Rear projection lamp box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209912456U (en) |
-
2019
- 2019-05-17 CN CN201920716745.6U patent/CN209912456U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200107 |