CN213069465U - Display device - Google Patents

Abstract

The embodiment of the application discloses a display, and belongs to the technical field of projection. The display includes: the projection device comprises a projection host, a projection screen, a support frame and a connecting frame; the projection host is used for emitting light beams, and the support frame is connected with the projection host; projection screen and link fixed connection, the one end and the support frame swivelling joint of link, and can switch between primary importance and second position to drive projection screen and expand or pack up, be used for receiving the light beam when projection screen expands, be located the projection host computer directly over when projection screen packs up. In the embodiment of the application, when the connecting frame rotates to the first position, the projection screen is unfolded, so that the normal use of the display is ensured; when the connecting frame rotates to the second position, the projection screen is folded right above the projection host, so that the problem of large occupied space when the display is not used is avoided, and the possibility that an external object collides with the projection screen is also avoided.

Description

Display device

Technical Field

The embodiment of the application relates to the technical field of projection, in particular to a display.

Background

With the continuous development of science and technology, displays are increasingly applied to the work and life of people. Displays are currently used mainly in home and office settings, for example in electronic competitions, drawing charts, securities analyses, etc. The display can receive the media file transmitted by the control equipment and display the media file to present a picture.

When the display is used, the display directly emits bright light beams with different colors to display pictures. When the display is not used, the display not only occupies space, but also is easily collided by external objects, and the like, so that the display has the risk of being damaged.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a display, which can avoid the problems that the space occupancy rate is high when the display is not used, and the display has damage risks. The technical scheme is as follows:

a display, the display comprising: the projection device comprises a projection host, a projection screen, a support frame and a connecting frame;

the projection host is used for emitting light beams, and the support frame is connected with the projection host;

the projection screen is fixedly connected with the connecting frame, one end of the connecting frame is rotatably connected with the supporting frame and can be switched between a first position and a second position to drive the projection screen to be unfolded or folded, the projection screen is used for receiving the light beam when being unfolded, and the projection screen is positioned right above the projection host when being folded.

Optionally, the display comprises a stop bar;

the support frame is provided with a positioning hole, the connecting frame is provided with a first limiting hole and a second limiting hole, and the limiting rod is used for penetrating through the positioning hole and the first limiting hole so as to limit the connecting frame at the first position; or the connecting frame penetrates through the positioning hole and the second limiting hole so as to limit the connecting frame at the second position.

Optionally, the rotation center point of the connecting frame, the center point of the first limiting hole and the center point of the second limiting hole can enclose a right triangle, and a connecting line of the center point of the first limiting hole and the center point of the second limiting hole is a hypotenuse of the right triangle.

Optionally, the display comprises a rotation axis and a drive mechanism;

the rotation axis with link fixed connection, just the rotation axis with support frame rotatable coupling, actuating mechanism with the rotation axis is connected, actuating mechanism can drive the rotation axis is rotatory, with switch between the primary importance with the second place.

Optionally, the driving mechanism includes a driving motor, an output shaft of the driving motor is fixedly connected to the rotating shaft, and a center line of the output shaft of the driving motor coincides with a center line of the rotating shaft.

Optionally, the display further comprises a limiting table, the limiting table is connected with the supporting frame, and the limiting table is used for limiting the connecting frame at the second position.

Optionally, the support frame comprises a base and a support rod;

the projection host is supported on the base, the first end of the supporting rod is connected with the base, and the second end of the supporting rod is rotatably connected with one end of the connecting frame.

Optionally, the support rods are telescopic rods.

Optionally, the connecting frame comprises a connecting rod;

the first end of connecting rod with support frame rotatable coupling, the connecting rod with projection screen fixed connection.

Optionally, the connecting frame further comprises a suspension rod;

the suspension rod is a telescopic rod, the second end of the connecting rod is fixedly connected with the first end of the suspension rod, and the second end of the suspension rod is fixedly connected with the projection screen.

The technical scheme provided by the embodiment of the application has the beneficial effects that at least:

in the embodiment of the application, as the connecting frame can rotate relative to the supporting frame, when the connecting frame rotates to the first position, the projection screen is unfolded, so that the normal use of the display is ensured; when the link rotates to the second position for projection screen packs up directly over to the projection host computer, also be projection screen lid directly over the projection host computer, thereby occupation space is great when having avoided not using the display problem, has avoided the possibility of outside object collision display, has still sheltered from the light-emitting window of projection host computer through projection screen, has avoided the adhesion of light-emitting window department dust. In addition, compared with the traditional display, the display formed by the projection host 1 and the projection screen 2 is more beneficial to the protection of human eyes because the light beams enter the human eyes after being reflected by the projection screen.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a display according to an embodiment of the present disclosure in an unfolded state;

fig. 2 is a schematic structural diagram of a retracted projection screen of a display according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of a rear-view exploded structure of a display according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a retraction process of a projection screen of a display according to an embodiment of the present application;

FIG. 5 is a schematic diagram of an expanded projection screen of another display according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a retracted configuration of a projection screen of another display according to an embodiment of the present disclosure;

fig. 7 is a schematic rear view of another display according to an embodiment of the present application.

Reference numerals:

1: a projection host; 2: a projection screen; 3: a support frame; 4: a connecting frame; 5: a limiting rod;

31: positioning holes; 32: a base; 33: a support bar;

41: a first limit hole; 42: a second limiting hole; 43: a connecting rod; 44: a suspension rod; 45: a suspension plate.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present application more clear, the embodiments of the present application will be further described in detail with reference to the accompanying drawings.

Fig. 1 illustrates a structural diagram of a display including a projection screen of an embodiment of the present application in an expanded state, and fig. 2 illustrates a structural diagram of a display including a projection screen of an embodiment of the present application in a collapsed state. As shown in fig. 1 or fig. 2, the display includes: the projection system comprises a projection host 1, a projection screen 2, a support frame 3 and a connecting frame 4. The projection host 1 is used for emitting light beams, and the support frame 3 is connected with the projection host 1; projection screen 2 and link 4 fixed connection, the one end and the support frame 3 rotatable coupling of link 4, and can switch between primary importance and second position to drive projection screen 2 and expand or pack up, as shown in fig. 1, be used for receiving the light beam when projection screen 2 expands, as shown in fig. 2, be located projection host 1 directly over when projection screen 2 packs up.

In the embodiment of the present application, since the connecting frame 4 can rotate relative to the supporting frame 3, when the connecting frame 4 rotates to the first position or the second position, the projection screen 2 can be unfolded or folded. And the normal use of the display is ensured when the projection screen 2 is unfolded; pack up to projection host 1 directly over at projection screen 2, also be projection screen 2 lid directly over projection host 1 to avoid the great problem of occupation space when not using the display, still avoided the possibility of outside object collision display, still sheltered from projection host 1's light-emitting window through projection screen 2, avoided the adhesion of light-emitting window department dust. In addition, compared with the traditional display, the display formed by the projection host 1 and the projection screen 2 is more beneficial to the protection of human eyes because the light beams enter the human eyes after being reflected by the projection screen.

Optionally, when the connecting frame 4 is limited to the first position, the projection screen is in the unfolded state; when the connecting frame 4 is limited at the second position, the projection screen is in a retracted state. Or when the connecting frame 4 is limited at the second position, the projection screen is in an unfolded state; when the connecting frame 4 is limited at the first position, the projection screen is in a retracted state.

Next, the embodiment of the present application is explained in a case where the projection screen is in the extended state when the link 4 is restricted to the first position, and in a case where the projection screen is in the retracted state when the link 4 is restricted to the second position.

As can be seen from fig. 1, when the projection screen is unfolded, the first position of the connecting frame 4 is a position where the length direction of the connecting frame 4 is parallel to the vertical direction and the free end of the connecting frame 4 faces upward; as can be seen from fig. 2, the second position of the connecting frame 4 is a position where the length direction of the connecting frame 4 is parallel to the vertical direction and the free end of the connecting frame 4 faces downward.

The free end of the connecting frame 4 refers to the end of the connecting frame 4 which is not connected with the support frame 3.

In the embodiment of the application, the connecting frame 4 can be manually controlled to rotate, so that the connecting frame 4 is limited at a first position or a second position; of course, the connecting frame 4 can also be controlled to rotate by an electric motor, so that the connecting frame 4 is limited to the first position or the second position.

When the link 4 is rotated by manual control, in some embodiments, as shown in fig. 3, the display includes a stop lever 5; the support frame 3 is provided with a positioning hole 31, the connecting frame 4 is provided with a first limiting hole 41 and a second limiting hole 42, and with reference to fig. 1, the limiting rod 5 is used for penetrating through the positioning hole 31 and the first limiting hole 41 to limit the connecting frame 4 at a first position; or in conjunction with fig. 2, pass through the positioning hole 31 and the second limiting hole 42 to limit the connecting frame 4 at the second position.

Optionally, the connecting frame 4 is connected to the supporting frame 3 through a rotating shaft, so that, in combination with the above description, when the connecting frame 4 rotates relative to the supporting frame 3 based on the rotating shaft, and when the positioning hole 31 coincides with the first limiting hole 41, the limiting rod 5 sequentially passes through the positioning hole 31 and the first limiting hole 41, so as to limit the connecting frame 4 at the first position; when the positioning hole 31 coincides with the second limiting hole 42, the limiting rod 5 passes through the positioning hole 31 and the second limiting hole 42 to limit the connecting frame 4 at the second position.

Optionally, the rotation center point of the connecting frame 4, the center point of the first limiting hole 41, and the center point of the second limiting hole 42 can enclose a right triangle, and a connection line between the center point of the first limiting hole 41 and the center point of the second limiting hole 42 is a hypotenuse of the right triangle. Of course, the rotation center point of the connecting frame 4, the center point of the first limiting hole 41, and the center point of the second limiting hole 42 can also enclose an acute angle or an obtuse triangle, as long as the projection screen 2 can be unfolded or folded, which is not limited in the embodiment of the present application.

As shown in fig. 1, when the first limiting hole 41 coincides with the positioning hole 31, a straight line where a center point of the first limiting hole 41 and a rotation center point of the connecting frame 4 are located is parallel to the vertical direction, so that when the connecting frame 4 rotates to the first position, a plane where the projection screen 2 is located is parallel to the vertical direction; with reference to fig. 2 and 4, when the connecting frame 4 continues to rotate by 90 degrees, and at this time, when the second limiting hole 42 coincides with the positioning hole 31, a straight line where a central point of the second limiting hole 42 and a rotation central point of the connecting frame 4 are located is parallel to the vertical direction, so that when the connecting frame 4 rotates to the second position, a plane where the projection screen 2 is located is parallel to the horizontal direction.

When the rotation of the link 4 is controlled electrically, in some embodiments, the display includes a rotation shaft and a driving mechanism; the rotating shaft is fixedly connected with the connecting frame 4, the rotating shaft is rotatably connected with the supporting frame 3, the driving mechanism is connected with the rotating shaft, and the driving mechanism can drive the rotating shaft to rotate so as to switch between a first position and a second position.

Optionally, the driving mechanism includes a driving motor, an output shaft of the driving motor is fixedly connected to the rotating shaft, and a center line of the output shaft of the driving motor coincides with a center line of the rotating shaft. Therefore, when the driving motor is started, the rotating shaft can be driven to rotate, and the connecting frame 4 is further driven to rotate; when the driving motor stops, the rotating shaft can be controlled to stop, and the connecting frame 4 is controlled to stop. That is, the link 4 can rotate with the start of the driving motor or stop at the current position with the stop of the driving motor, thereby avoiding the arrangement of the positioning hole 31, the first position-limiting hole 41 and the second position-limiting hole 42, and simplifying the structure. In addition, the rotation of the connecting frame 4 can be automated through the driving mechanism, so that the actions of manual operation are reduced, and the automation is further promoted.

In some embodiments, the display further comprises a limiting table connected to the supporting frame 3, the limiting table being used to limit the connecting frame 4 in the second position.

Wherein, when link 4 rotated to the second position, can support link 4 through spacing boss to the location of link 4 is convenient for. When the connecting frame 4 is rotated manually, the limiting rod 5 can conveniently pass through the positioning hole 31 and the second limiting hole 42 through the support of the limiting table; when the connecting frame 4 is controlled to rotate by the driving mechanism, if the connecting frame 4 is controlled to stop rotating by the driving mechanism in time, the connecting frame 4 can be prevented from further rotating by the limiting table, so that the connecting frame 4 is ensured to stop at the second position.

In some embodiments, as shown in fig. 3, the supporting frame 3 includes a base 32 and a supporting rod 33, the projection host 1 is supported on the base 32, a first end of the supporting rod 33 is connected to the base 32, and a second end of the supporting rod 33 is rotatably connected to one end of the connecting frame 4. Like this, can support projection host computer 1 through base 32, support link 4 through bracing piece 33 to realize the support of projection screen 2, and guaranteed the stability that projection screen 2 supported. Wherein the second end of the support rod 33 has the positioning hole 31 described above.

Optionally, the projection host 1 is fixedly supported on the base 32, so that the projection host 1 and the base 32 are integrally connected, that is, the projection host 1, the base 32 and the support rod 33 are integrally connected, and the projection host 1 and the projection screen 2 are integrally connected through the connecting frame 4, so that the possibility of change of the relative position between the projection host 1 and the projection screen 2 is avoided.

Optionally, the length direction of the supporting rod 33 is perpendicular to the plane of the base 32.

The length of the supporting rod 33 is greater than the height of the projection host 1, so that the connecting frame 4 is not affected by the projection host 1 when rotating relative to the supporting rod 33.

Optionally, the supporting rod 33 is a telescopic rod, the maximum length of the telescopic rod is greater than the height of the projection host 1, so that the rotation of the connecting frame 4 is not affected, and the height of the projection screen 2 can be adjusted by the length of the telescopic rod, so as to ensure that the light beam emitted by the projection host 1 can be projected to the central area of the projection screen 2, and improve the display effect of the projection screen 2. In addition, when the connecting frame 4 rotates to the second position to enable the projection screen 2 to be positioned right above the projection host 1, the distance between the projection screen 2 and the projection host 1 can be adjusted through the telescopic rod, so that the overall height of the display when the display is not used is reduced, and the occupancy rate of the space is reduced.

Wherein, the telescopic link is electric telescopic handle or manual telescopic link, and for manual flexible doing, electric telescopic handle can be more convenient for to the regulation of projection screen 2's height, and can improve the accuracy nature of 2 altitude mixture control of projection screen.

Optionally, the first end of the supporting rod 33 is fixedly connected with the base 32. Of course, the first end of the supporting rod 33 is movably connected to the base 32, and the supporting rod 33 can slide in the plane of the base 32, so as to adjust the distance between the projection host 1 and the projection screen 2 in the direction perpendicular to the plane of the projection screen 2.

Exemplarily, when the supporting rod 33 is a straight rod, the first end of the supporting rod 33 is fixedly connected with a sliding block, the base 32 has a sliding groove, the length direction of the sliding groove is perpendicular to the plane where the projection screen 2 is located, and the sliding block is limited in the sliding groove and can slide in the sliding groove. Through the cooperation of spout and slider like this, realize bracing piece 33 and drive the removal of projection screen 2, and then realize the regulation of the horizontal distance between projection host computer 1 and the projection screen 2.

For example, when the supporting rod 33 is an L-shaped rod, the portion of the supporting rod 33 parallel to the base 32 is equivalent to the sliding block described in the above example, that is, the portion of the supporting rod 33 parallel to the base 32 extends into the sliding slot of the base. Therefore, the supporting rod 33 drives the projection screen 2 to move through the sliding of the part of the supporting rod 33 parallel to the base in the sliding groove, and further the adjustment of the horizontal distance between the projection host 1 and the projection screen 2 is realized.

Optionally, the side edge of the sliding block is provided with a tooth groove along the length direction, the support frame 3 further comprises a driving motor and a gear set, an output shaft of the driving motor is fixedly connected with the gear set, and the gear set is meshed with the tooth groove. Therefore, the gear set is driven to rotate through the driving motor, and the sliding block is driven to slide in the sliding groove under the matching of the tooth grooves.

Further, when the horizontal distance between the projection host 1 and the projection screen 2 is adjusted, since the projection ratio of the projection host is constant, the area of the projection screen 2 where the light beam emitted by the projection host 1 is projected becomes smaller as the distance between the projection host 1 and the projection screen 2 is shortened, thereby reducing the display picture; with the increase of the distance between the projection host 1 and the projection screen 2, the area of the projection screen 2 where the light beam emitted by the projection host 1 is projected becomes larger, so that the display screen becomes larger. Therefore, the user can conveniently watch the picture by adjusting the size of the display picture.

In some embodiments, as shown in fig. 5 or 6, the connecting frame 4 comprises a connecting rod 43; the first end of connecting rod 43 and support frame 3 rotatable coupling, connecting rod 43 and projection screen 2 fixed connection. Wherein the first end of the connecting rod 43 has the first and second position-limiting holes 41 and 42 described above.

Alternatively, the first position of the connecting rod 43 refers to a position where the connecting rod 43 is located when the length direction of the connecting rod 43 is parallel to the vertical direction; the second position of the link lever 43 refers to a position where the link lever 43 is located when the longitudinal direction of the link lever 43 is parallel to the horizontal direction. Of course, the first position and the second position of the connecting rod 43 may be other positions, as long as it is ensured that the projection screen 2 can receive the light beam emitted by the projection host 1 when the connecting rod 43 is at the first position, and when the connecting rod 43 is at the second position, the projection screen 2 covers the projection host 1, which is not limited in the embodiment of the present application.

Optionally, the connecting frame 4 comprises one connecting rod 43, or a plurality of connecting rods 43.

When the connecting frame 4 comprises a connecting rod 43, the supporting frame 3 comprises a supporting rod 33 or a plurality of supporting rods 33. When the support frame 3 comprises one support rod 33, the first end of the connecting rod 43 is directly rotatably connected with the second end of the support rod 33, so that the connecting rod 43 can rotate relative to the support frame 3; when the supporting frame 3 includes a plurality of supporting rods 33, the connecting frame 4 further includes a rotating shaft, the second ends of the supporting rods 33 are rotatably connected to the rotating shaft, and the first end of the connecting rod 43 is fixedly connected to the rotating shaft, so that the connecting rod 43 can rotate relative to the supporting frame 3.

When the link frame 4 includes a plurality of link rods 43, the support frame 3 includes a plurality of support rods 33. The connecting frame 4 further includes a rotating shaft, the second ends of the plurality of support rods 33 are rotatably connected to the rotating shaft, and the first ends of the plurality of connecting rods 43 are fixedly connected to the rotating shaft, so that the connecting rods 43 can rotate relative to the support frame 3.

Optionally, the connecting rod 43 is non-detachably connected with the projection screen 2; of course, the connecting rod 43 is detachably connected to the projection screen 2, so that when the size of the display image is adjusted by combining the structure of the supporting frame 3, the projection screen 2 may not be suitable for the adjusted display image, and therefore, the projection screen 2 with a proper size can be replaced based on the detachable connection between the projection screen 2 and the connecting frame 4.

Alternatively, the connecting rod 43 is directly fixedly connected to the projection screen 2, and the sidewall of the second end of the connecting rod 43 is fixedly connected to the projection screen 2. Of course, in other embodiments, the connecting bar 43 is indirectly fixedly connected to the projection screen 2.

Optionally, as shown in fig. 5 or fig. 6, the connecting frame 4 further includes a hanging rod 44, a second end of the connecting rod 43 is fixedly connected to a first end of the hanging rod 44, and a second end of the hanging rod 44 is fixedly connected to the projection screen 2.

Optionally, the suspension rod 44 is an expansion rod, so that the horizontal distance between the projection host 1 and the projection screen 2 can be adjusted by the structure of the support frame 3, and the horizontal distance between the projection host 1 and the projection screen 2 can also be adjusted by the suspension rod 44, thereby increasing the adjustment range of the horizontal distance. In addition, when the connecting frame 4 rotates to the second position, that is, the length direction of the hanging rod 44 is parallel to the vertical direction, the overall height of the display when not in use can be further reduced by adjusting the length of the hanging rod 44 and matching with the structure of the supporting frame 3 described above.

Illustratively, when the hanging rod 44 rotates to a length direction parallel to the vertical direction, the length of the hanging rod 44 is shortened to increase the distance between the projection screen 2 and the projection host 1, so that the supporting rod 33 has a larger adjustment space; then, the height of the support rod 33 is shortened, and the projection screen 2 and the projection host 1 are adjusted to reduce the overall height of the display when the display is not used.

For the above-described two cases of the connection between the side wall of the connecting rod 43 and the projection screen 2 and the connection between the second end of the hanging rod 44 and the projection screen 2, in order to avoid the stress concentration phenomenon on the projection screen, as shown in fig. 6 or fig. 7, the connecting frame 4 further includes a hanging plate 45, and for the above-described case of the direct connection between the connecting rod 43 and the projection screen 2, the first side surface of the hanging plate 45 is fixedly connected with the side wall of the connecting rod 43, and the second side surface of the hanging plate 45 is fixedly connected with the projection screen 2; in the case where the connecting rod 43 is connected to the projection screen 2 via the hanging rod 44, the first side of the hanging plate 45 is fixedly connected to the second end of the hanging rod 44, and the second side of the hanging plate 45 is fixedly connected to the projection screen 2. Thus, the stress area on the projection screen 2 is increased by connecting the suspension plate 45 with the projection screen 2, so that the phenomenon of stress concentration on the projection screen 2 can be avoided.

Optionally, in this embodiment of the application, the display is a laser ultra-short-focus projection device, and the projection host 1 included in the display is the ultra-short-focus projection host 1. Because the projection host 1 is the ultra-short-focus projection host 1, the distance from the ultra-short-focus projection host 1 to the plane where the projection screen 2 is located can be set to be a short distance, so that the miniaturization design of the display is realized.

The projection host 1 is configured to receive a media file and emit a light beam to the projection screen 2, so as to display the received media file on the projection screen 2. Illustratively, the media files are video data, image data, text data, and the like.

Optionally, the projection host 1 has an external hardware interface, and the hardware interface is used for connecting with a computer host, a mobile phone, a flash disk, and the like, so as to facilitate transmission of the media file. Or the projection host 1 has a communication module for making a network connection in order to receive a network media file.

Therein, the projection host 1 comprises an optical engine for emitting a light beam. When the projection host 1 is an ultra-short-focus projection host 1, the optical engine is an ultra-short-focus optical engine. Illustratively, the ultra-short focus optical engine is a DLP (Digital Light processing) optical engine.

The optical engine comprises a laser light source, an optical modulation component and a projection lens, wherein the laser light source is connected with the optical modulation component, and the projection lens is connected with the optical modulation component; the laser light source, the light modulation component and the projection lens are electrically connected with an external power supply. The external power supply is used for supplying power to the laser light source, the light modulation component and the projection lens, so that the laser light source emits light beams to the light modulation component, the light beams emitted by the laser light source are emitted to the projection lens after being modulated by the light modulation component, and then the light beams are emitted to a screen included by the projection screen through the projection lens.

In addition, the optical engine further comprises a heat dissipation assembly, so that the laser light source, the light modulation assembly and the projection lens can be conveniently dissipated through the heat dissipation assembly, and the optical performance of the device is prevented from being influenced by overhigh temperature of the device caused by heat accumulated in the laser light source, the light modulation assembly and the projection lens. Illustratively, the heat dissipation assembly includes a fan, a liquid cooling device, and the like.

In this embodiment, the projection host further includes a functional component, and the optical engine is electrically connected to the functional component, and the optical engine is configured to emit a light beam in cooperation with the functional component. The specific devices included in the functional component may refer to related technologies as long as the functional component can cooperate with the optical engine to emit the light beam, and the embodiment of the present application does not limit this.

Optionally, in this embodiment of the application, the projection screen 2 includes a curtain sheet, a back plate, and a frame, the curtain sheet is attached to the back plate, the frame wraps the edge of the back plate, and the back plate is connected to the connecting frame 4. The screen can receive the light beam emitted from the projection host 1 (optical engine) to display the picture.

The screen is an optical screen, such as a rollable fresnel optical screen, or a flexible black screen, and has a higher optical gain than a conventional screen, so that the brightness and contrast of the light beam can be restored as much as possible.

In the embodiment of the application, the projection host and the projection screen are connected through the support frame and the connecting frame, so that the projection host and the projection screen are integrated, and the possibility of change of the relative position between the projection host and the projection screen is avoided. In addition, the connecting frame can rotate relative to the supporting frame, so that the projection screen is unfolded when the connecting frame rotates to the first position, and the normal use of the display is ensured; when the connecting frame rotates to the second position, the projection screen is folded right above the projection host, so that the problem of large occupied space when the display is not used is avoided, and the possibility that an external object collides with the display is also avoided. In addition, compared with the traditional display, the display formed by the projection host 1 and the projection screen 2 is more beneficial to the protection of human eyes because the light beams enter the human eyes after being reflected by the projection screen.

The above description is only illustrative of the embodiments of the present application and is not intended to limit the embodiments of the present application, and any modification, equivalent replacement, or improvement made within the spirit and principle of the embodiments of the present application should be included in the scope of the embodiments of the present application.

Claims (10)

1. A display, characterized in that the display comprises: the projection device comprises a projection host, a projection screen, a support frame and a connecting frame;

the projection host is used for emitting light beams, and the support frame is connected with the projection host;

the projection screen is fixedly connected with the connecting frame, one end of the connecting frame is rotatably connected with the supporting frame and can be switched between a first position and a second position to drive the projection screen to be unfolded or folded, the projection screen is used for receiving the light beam when being unfolded, and the projection screen is positioned right above the projection host when being folded.

2. The display of claim 1, wherein the display comprises a stop bar;

the support frame is provided with a positioning hole, the connecting frame is provided with a first limiting hole and a second limiting hole, and the limiting rod is used for penetrating through the positioning hole and the first limiting hole so as to limit the connecting frame at the first position; or the connecting frame penetrates through the positioning hole and the second limiting hole so as to limit the connecting frame at the second position.

3. The display apparatus of claim 2, wherein the center point of rotation of the connecting frame, the center point of the first position-limiting hole and the center point of the second position-limiting hole can enclose a right triangle, and a line connecting the center point of the first position-limiting hole and the center point of the second position-limiting hole is a hypotenuse of the right triangle.

4. The display of claim 1, wherein the display comprises a rotational axis and a drive mechanism;

the rotation axis with link fixed connection, just the rotation axis with support frame rotatable coupling, actuating mechanism with the rotation axis is connected, actuating mechanism can drive the rotation axis is rotatory, with switch between the primary importance with the second place.

5. The display of claim 4, wherein the driving mechanism comprises a driving motor, an output shaft of the driving motor is fixedly connected with the rotating shaft, and a center line of the output shaft of the driving motor coincides with a center line of the rotating shaft.

6. The display of any one of claims 1-5, further comprising a stop block coupled to the support frame, the stop block configured to stop the coupling frame in the second position.

7. The display of claim 1, wherein the support frame comprises a base and a support rod;

the projection host is supported on the base, the first end of the supporting rod is connected with the base, and the second end of the supporting rod is rotatably connected with one end of the connecting frame.

8. The display of claim 7, wherein the support rods are telescopic rods.

9. The display of claim 1, 7 or 8, wherein the connecting bracket comprises a connecting rod;

the first end of connecting rod with support frame rotatable coupling, the connecting rod with projection screen fixed connection.

10. The display of claim 9, wherein the connecting bracket further comprises a hanging bar;

the suspension rod is a telescopic rod, the second end of the connecting rod is fixedly connected with the first end of the suspension rod, and the second end of the suspension rod is fixedly connected with the projection screen.

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