CN113376935A

CN113376935A - Laser projection device

Info

Publication number: CN113376935A
Application number: CN202010827387.3A
Authority: CN
Inventors: 黄景林
Original assignee: Qingdao Hisense Laser Display Co Ltd
Current assignee: Qingdao Hisense Laser Display Co Ltd
Priority date: 2020-02-25
Filing date: 2020-08-17
Publication date: 2021-09-10
Anticipated expiration: 2040-08-17
Also published as: CN113376933A; CN113376935B; CN113376934A

Abstract

The application discloses laser projection equipment belongs to laser projection technical field. The laser projection apparatus includes: the device comprises a laser projection host, a projection screen, a functional component and a fixed bracket; the projection screen is arranged on the fixed support, and the functional component is positioned on the back of the projection screen or in the fixed support; the laser projection host is positioned on one side of the projection screen and is arranged on the fixed support, the laser projection host comprises an optical projection component, and the optical projection component is connected with the functional component and can project pictures to the projection screen under the cooperation of the functional component. The problem of laser projection host computer volume is great among the correlation technique is solved. The effect of reducing the volume of the laser projection host is achieved.

Description

Laser projection device

The present application claims priority from chinese patent application No. 202010117196.8 entitled "laser projection device" filed 25.02/2020, which is incorporated by reference herein in its entirety.

Technical Field

The application relates to the technical field of laser projection, in particular to laser projection equipment.

Background

The laser projection equipment comprises a projection screen and a laser projection host and is used for realizing the functions of video playing and the like.

In a laser projection apparatus in related art, a laser projection host includes various functional components, and the functional components are electrically connected to each other, so that the laser projection host projects a picture onto a projection screen.

However, the laser projection host in such a laser projection apparatus is bulky.

Disclosure of Invention

The embodiment of the application provides laser projection equipment, which can solve the problem that a laser projection host computer in the related art is large in size. The technical scheme is as follows:

according to a first aspect of the present application, there is provided a laser projection apparatus comprising:

the device comprises a laser projection host, a projection screen, a functional component and a fixed bracket;

the projection screen is arranged on the fixed support, and the functional component is positioned on the back of the projection screen or in the fixed support;

the laser projection host is located one side of the projection screen and is installed on the fixed support, the laser projection host and the projection screen are at a preset distance, the laser projection host comprises an optical projection component, the optical projection component is electrically connected with the functional assembly and can project pictures to the projection screen under the cooperation of the functional assembly.

Optionally, the functional module includes a power board electrically connected to the optical projection component for outputting a voltage or current driving signal.

Optionally, the functional component includes a control motherboard, and the control motherboard is electrically connected to the laser projection host.

Optionally, the functional component includes a wireless module, and the wireless module is electrically connected to the control motherboard.

Optionally, the functional component includes a display panel, and the display panel is electrically connected to the control main board.

Optionally, the functional component includes a key, and the key is electrically connected to the control motherboard.

Optionally, the functional component includes a speaker, and the speaker is electrically connected to the control main board.

Optionally, the optical projection component includes a laser light source, an optical modulation component and a projection lens, 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 the power panel.

Optionally, the optical modulation assembly includes an optical engine housing, a light valve and a light valve driving board, the light valve is located in the optical engine housing, and the light valve driving board is located outside the optical engine housing and electrically connected to the light valve;

the power panel is electrically connected with the light valve driving board.

Optionally, the laser light source includes a light source housing, a laser and a light source driving board, the laser is located in the light source housing, the light source driving board is located outside the light source housing, the laser is electrically connected to the light source driving board, and the light source driving board is electrically connected to the power board.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

the application provides a laser projection equipment, this laser projection equipment includes the laser projection host computer, the projection screen, functional unit and fixed bolster, the projection screen is installed on the fixed bolster, the functional unit is arranged in the back or the fixed bolster of projection screen, the laser projection host computer is arranged in one side of projection screen and installs on the fixed bolster, the laser projection host computer includes optical projection part, optical projection part is connected with the functional unit electricity, and can be under the functional unit cooperation, to the projection screen projection picture, functional unit is arranged in projection screen or fixed bolster in this structure, and be connected with the laser projection host computer electricity, can reduce the volume of laser projection host computer. The problem of laser projection host computer volume is great among the correlation technique is solved. The effect of reducing the volume of the laser projection host is achieved.

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 laser projection apparatus provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of another laser projection apparatus provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of a structure of the laser projection host shown in FIG. 2;

FIG. 4 is a schematic view of another configuration of the laser projection host shown in FIG. 2;

FIG. 5 is a schematic structural view of the moving assembly shown in FIG. 2;

FIG. 6 is an exploded view of the laser projection device of FIG. 2;

FIG. 7 is a side view of the laser projection device of FIG. 2;

FIG. 8 is a schematic structural diagram of a projection screen of the laser projection apparatus shown in FIG. 2, which is away from a laser projection host;

FIG. 9 is a schematic view of the laser projection host of the laser projection device of FIG. 2 in a first position;

fig. 10 is a front view of the laser projection host and the base of fig. 2.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

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

At present, in a laser projection apparatus, various functional components are included in a laser projection host, and the functional components are electrically connected to each other, so that the laser projection host projects a picture onto a projection screen.

The embodiment of the application provides laser projection equipment.

Fig. 1 is a schematic structural diagram of a laser projection apparatus according to an embodiment of the present application. As can be seen with reference to fig. 1, the laser projection device 10 may include:

laser projection host 11, projection screen 12, functional unit 13 and fixed bolster 14.

The projection screen 12 is mounted on the fixing bracket 14, the functional component 13 is located on the back of the projection screen 12 or in the fixing bracket 14, and fig. 1 shows the case where the functional component 13 is located on the back of the projection screen 12, but the embodiment of the present application does not limit this.

The laser projection host 11 is located on one side of the projection screen 12 and is installed on the fixed support 14, the laser projection host 11 and the projection screen 12 have a preset distance, the laser projection host 11 includes an optical projection component 111, the optical projection component 111 is electrically connected with the functional component 13, and can project images to the projection screen 12 under the cooperation of the functional component 13. The preset distance between the laser projection host 11 and the projection screen 12 may enable the laser projection host 11 to project a picture onto the projection screen 12.

The optical projection unit 111 may be electrically connected to the functional element 13 through a wire embedded in the fixing bracket 14.

To sum up, the embodiment of the application provides a laser projection equipment, this laser projection equipment includes the laser projection host computer, the projection screen, functional unit and fixed bolster, the projection screen is installed on the fixed bolster, functional unit is arranged in the back or the fixed bolster of projection screen, the laser projection host computer is arranged in one side of projection screen and installs on the fixed bolster, the laser projection host computer includes the optics projection part, optics projection part is connected with the functional unit electricity, and can be under the functional unit cooperation, to projection screen projection picture, functional unit is arranged in projection screen or fixed bolster in this structure, and is connected with the laser projection host computer electricity, can reduce the volume of laser projection host computer. The problem of laser projection host computer volume is great among the correlation technique is solved. The effect of reducing the volume of the laser projection host is achieved.

Fig. 2 is a schematic structural diagram of another laser projection apparatus provided in an embodiment of the present application. Fig. 2 shows the functional component 13 on the back of the projection screen 12, and the functional component 13 may also be located in the fixing bracket 14, which is not limited by the embodiment of the present application.

In the embodiment of the present application, the functional component 13 may include different structures:

optionally, the functional assembly 13 includes a power board 131, and the power board 131 is electrically connected to the optical projection unit 111. The power board 131 may be used to output a voltage or current driving signal. The power board 131 may be connected to the optical projection unit 111 by a wire, and the wire may be embedded in the fixing bracket 14.

Optionally, the functional component 13 includes a control motherboard, and the control motherboard is electrically connected to the laser projection host 11.

The control main board may be a Television (TV) main board, and the TV board may transmit an external signal to the laser projection host 11, or may enable different functional components to transmit information to each other.

Optionally, the functional component 13 includes a wireless module, and the wireless module is electrically connected to the control motherboard. The Wireless module may include a bluetooth module and a Wireless-Fidelity (WIFI) module, and the Wireless module may access the Wireless internet.

Optionally, the functional component 13 includes a display panel, which is electrically connected to the control motherboard. The display panel can acquire signals of the control main board and decode and image. In addition, the display panel page may be located in the laser projection host 11, which is not limited in the embodiment of the present application.

Optionally, the functional component 13 includes a key, and the key is electrically connected to the control motherboard. The keys may include a power key, a volume key, etc. The keys may be physical keys or virtual keys.

Optionally, the functional component 13 comprises a speaker, which is electrically connected to the control motherboard. A loudspeaker is a transducer device that converts an electrical signal into an acoustic signal. The speaker included in the functional component 13 may include one speaker unit or a speaker array constituted by a plurality of speaker units.

The functional component 13 provided in the embodiment of the present application may include one or more of the above structures, and fig. 2 shows a case where the functional component 13 includes the power supply board 131, which is not limited in the embodiment of the present application.

Compared with the prior art in which the functional components are installed in the laser projection host, in the projection apparatus 10 provided in the embodiment of the present application, the functional components 13 are installed in the rear surface of the projection screen 12 or the fixing bracket 14, so that the volume of the laser projection host 11 can be reduced, and the electromagnetic Compatibility (EMC) between the functional components (e.g., the wireless module, the control main board, and the power board) can be improved. In addition, in the prior art, the functional components are installed in the laser projection host, so that it is troublesome to update the control main board, and when the laser projection apparatus 10 provided in the embodiment of the present application is used, the control main board can be installed on the projection screen 12, and it is convenient to update the control main board. The functional component 13 is installed on the back of the projection screen 12 or in the fixing bracket 14, so that the heat dissipation channel of the laser projection host 11 can be improved, the power of the laser projection host 11 can be reduced, the noise of the laser projection host 11 can be further reduced, and the heat dissipation efficiency of the laser projection host 11 can be improved.

Compared with a laser projection host of laser projection equipment in the prior art, the laser projection host 11 provided by the embodiment of the application has the advantages that the number of internal components is reduced, so that the connection of the internal components of the laser projection host 11 is simpler, the production efficiency of the laser projection host 11 can be improved, the production process of a television screen in the prior art can be referred to for the production of the projection screen 12 provided with the functional component 13, and thus the production efficiency of the laser projection equipment 10 can be further improved.

Please refer to fig. 3, which is a schematic structural diagram of the laser projection host 11 shown in fig. 2. The optical projection unit 111 (not shown in fig. 3) includes a laser light source 111a, a light modulation component 111b, and a projection lens 111c, the laser light source 111a is connected to the light modulation component 111b, and the projection lens 111c is connected to the light modulation component 111 b.

The laser light source 111a, the light modulation component 111b and the projection lens 111c are electrically connected to a power supply board 131 (not shown in fig. 3).

The laser projection host 11 further includes a heat sink 112, a laser source heat sink 113, and a light valve heat sink 114. The power supply board 131 (not shown in fig. 3) is used to supply power to the laser light source 111a, the light modulation component 111b, and the projection lens 111 c. The light source heat sink assembly 113 and the light valve heat sink assembly 114 may include fans, liquid cooling devices, and the like.

The light modulation component 111b includes a light machine housing a, a light valve and a light valve driving board c, the light valve is located in the light machine housing a, and the light valve driving board c is located outside the light machine housing a and electrically connected to the light valve. The light valve may be a Digital Micromirror Device (DMD), among others.

The power supply board 131 (not shown in fig. 3) is electrically connected to the light valve driving board c.

The optical projection unit 111 is connected to the power board 131 through a wire, and since power parameters (e.g., the magnitude of current and voltage) for operating the light valve may be different from those provided by the power board 131, electricity supplied from the power board 131 is supplied to the light valve through the light valve driving board c.

The laser light source 111a includes a light source housing d, a laser and a light source driving board f, the laser is located in the light source housing d, the light source driving board f is located outside the light source housing d, the laser is electrically connected to the light source driving board f, and the light source driving board f is electrically connected to the power board 131.

Fig. 3 is a schematic structural diagram of the laser projection host 11 when the power supply board is not located in the laser projection host 11. However, in the embodiment of the present application, the power supply board may also be located in the laser projection host 11.

Please refer to fig. 4, which is a schematic structural diagram of the laser projection host 11 when the power board 131 is located in the laser projection host 11. The laser projection host 11 includes a light source laser 111a, a light modulation unit 111b, and a projection lens 111 c.

The laser projection host 11 further includes a heat sink 112, a laser source heat sink 113, and a light valve heat sink 114. The power board 131 is used to supply power to the laser light source 111a, the light modulation component 111b and the projection lens 111 c. The light source heat sink assembly 113 and the light valve heat sink assembly 114 may include fans, liquid cooling devices, and the like.

The light modulation component 111b includes a light machine housing a, a light valve and a light valve driving board c, the light valve is located in the light machine housing a, and the light valve driving board c is located outside the light machine housing a and electrically connected to the light valve.

The power board 131 is electrically connected to the light valve driving board c. Since the power supply parameters (e.g., the magnitude of current and voltage) for operating the light valve may be different from the power supply parameters provided by the power supply board 16, the power supplied from the power supply board 131 is supplied to the light valve via the light valve driving board c.

The laser light source 111a includes a light source housing d, a laser and a light source driving board f, the laser is located in the light source housing d, the light source driving board f is located outside the light source housing d, the laser is electrically connected to the light source driving board f, and the light source driving board f is electrically connected to the power board.

In the laser projection device 10 shown in fig. 2, the laser projection device 10 further includes a moving assembly 15, the laser projection host 11 is connected to the fixed support 14 through the moving assembly 15, and can be driven by the moving assembly 15 to move between a first position g and a second position h, the first position g is located between the second position h and the fixed support 14, and when the laser projection host 11 is located at the second position h, the laser projection host can project a picture onto the projection screen 12. Fig. 2 shows the laser projection host 11 at the second position h.

Please refer to fig. 5, which is a schematic structural diagram of the moving assembly 15 shown in fig. 2. The moving assembly 15 (not shown in fig. 5) includes at least one sub-moving assembly 150 (fig. 5 shows a case where the moving assembly 15 includes one sub-moving assembly 150, but the embodiment of the present application is not limited thereto), each sub-moving assembly 150 includes a driving part 151 and a rail 152, the driving part 151 can move on the rail 152, two ends of the rail 152 are located at the first position g and the second position h, respectively, and the driving part 151 includes a motor 151a and a driving wheel 151b connected to the motor 151 a.

One of the driving unit 151 and the rail 152 is located on the laser projection host 11, and the other is located on the fixed bracket 14. Fig. 5 shows the case where the driving unit 151 is located on the fixed bracket and the rail 152 is located on the laser projection host 11, but the embodiment of the present application does not limit this.

The motor 151a may be a motor, and the motor 151a is connected to the driving wheel 151b, and the driving wheel 151b can move the rail 152 under the cooperation of the motor 151 a.

For example, when the driving part 151 is located on the fixing bracket 14, the guide rail 152 may be clamped in the fixing bracket 14 and fixedly connected to the housing of the laser projection host 11 by screws.

The drive wheel 151b includes a gear and the rail 152 includes a rack.

In the projection apparatus 10 shown in fig. 2, the fixing frame 14 includes a base 141 and a connecting member 142 located on the base 141, the projection screen 12 is connected to the connecting member 142, and the laser projection host 11 is connected to the base 141 through the moving assembly 15.

The moving assembly 15 can fix the laser projection host 11 on the base 141, and the moving assembly 15 can drive the laser projection host 11 to move between the first position a and the second position b.

Fig. 6 is an exploded view of the laser projection device 10 of fig. 2. Fig. 6 shows a case where the moving assembly 15 includes one sub-moving assembly, and when the moving assembly 15 includes one sub-moving assembly, the cost of the laser projection apparatus in the embodiment of the present application can be reduced.

The laser projection equipment provided by the embodiment of the application can accurately move the laser projection host between the first position and the second position through the moving assembly. When the laser projection equipment does not operate, the laser projection host can be positioned at the first position so as to reduce the space occupied by the whole laser projection equipment; when the laser projection device is to operate, the laser projection host may be located at a second location to facilitate projecting a picture onto the projection screen. Therefore, the space occupied by the whole laser projection equipment is reduced, and the condition of possible deviation when the laser projection host is moved is avoided.

The projection screen 12 includes a screen body 121 and a rear casing 122, the rear casing 122 is located on a side of the screen body 121 away from the laser projection host 11, and the connecting member 142 is connected to the rear casing 122.

Rear housing 122 may be a hardware back panel or an internal support of projection screen 12, and rear housing 122 may be connected to connecting member 142 to fix projection screen 12, so as to support projection screen 12 by connecting member 142. The rear housing 122 may also be a metal plate frame for supporting the periphery of the screen body 121, and the connecting member 142 may be connected to the metal plate frames on the two sides, or connected to the metal plate frames on the bottom and the two sides, so as to support the projection screen 12.

Fig. 7 is a side view of the laser projection device 10 of fig. 2. The laser projection host 11 is fixed on the base 141 by the moving component 15, the connecting component 142 is located on the base 141, the connecting component 142 is connected with the rear shell 122 to support the screen body 121, and the functional component (not shown in fig. 7) is located between the rear shell 122 and the screen body 121.

Please refer to fig. 8, which is a schematic structural diagram of a side of the projection screen 12 away from the laser projection host in the laser projection apparatus 10 shown in fig. 2. The rear housing 122 may be fixedly connected to the screen body 121 through screws, a functional component 13 (not shown in fig. 9) is installed on a surface of the screen body 121 away from the laser projection host, and the functional component 13 may include a power board 131, a control main board 132, a wireless module 133, a display panel 134, a key 135, a speaker 136, a remote audio 137, a camera 138, a remote control, and an indicator 139. The rear shell 122 may cover the functional component 13, or may be arranged without overlapping with the functional component 13 (fig. 9 shows a case where the rear shell 122 is arranged without overlapping with the functional component 13, but this is not limited by the embodiment of the present application).

Fig. 9 is a schematic diagram illustrating the laser projection host 11 in the laser projection apparatus 10 shown in fig. 2 at the first position g. When the laser projection host 11 is in the power-off state, the laser projection host 11 is located at the first position g, so that the volume of the laser projection device 10 can be reduced when the laser projection device is powered off. The laser projection device 10 may be located on a television set, and with the laser projection device 10 provided in this embodiment of the present application, the width of the television set may be smaller than the distance between the laser projection host 11 and the projection screen 12 when the laser projection host 11 is located at the second position h, so that the laser projection device 10 may be suitable for television sets of various specifications. The laser projection host 11 and the projection screen 12 are fixedly connected by the fixing support 14, and the laser projection host 11 does not have the problems of position deviation and the like compared with the projection screen 12.

Fig. 10 is a front view of the laser projection host 11 and the base 141 shown in fig. 2. The fixing bracket further includes a rail groove 143, the rail groove 143 can cooperate with at least one laser projection host fixing screw 116 to fix the laser projection host 11 on the base 141, and the driving part 151 can drive the laser projection host 11 to move between the first position and the second position. To sum up, the embodiment of the application provides a laser projection equipment, this laser projection equipment includes the laser projection host computer, the projection screen, functional unit and fixed bolster, the projection screen is installed on the fixed bolster, functional unit is arranged in the back or the fixed bolster of projection screen, the laser projection host computer is arranged in one side of projection screen and installs on the fixed bolster, the laser projection host computer includes the optics projection part, the optics projection part is connected with functional unit, and can be under the functional unit cooperation, to projection screen projection picture, functional unit is arranged in projection screen or fixed bolster in this structure, and be connected with the laser projection host computer electricity, can reduce the volume of laser projection host computer. The problem of laser projection host computer volume is great among the correlation technique is solved. The effect of reducing the volume of the laser projection host is achieved.

In a laser projection apparatus in the related art, a projection screen is hung on a wall or the like where the projection screen can be supported, a laser projection host is placed at a predetermined position, and after the laser projection host is placed at the predetermined position, the laser projection host can project a picture onto the projection screen.

However, the relative position between the laser projection host and the projection screen may be shifted during the use process, which results in poor projection effect.

The embodiment of the application provides a laser projection equipment, this laser projection equipment includes the laser projection host computer, the projection screen, remove subassembly and fixed bolster, the projection screen is installed on the fixed bolster, the laser projection host computer is connected with the fixed bolster through removing the subassembly, and can be under the drive of removing the subassembly, remove between primary importance and second place, when the laser projection host computer is located the second place, can throw the picture to the projection screen, the laser projection host computer passes through the fixed bolster with the projection screen under the structure and fixes, and remove the subassembly and can realize that the laser projection host computer carries out accurate removal in two positions, the laser projection host computer compares in the projection screen can not appear the skew scheduling problem. The effect of improving the accuracy of the relative position of the laser projection host and the projection screen is achieved.

In an exemplary embodiment, the power board 131 is located on a surface of the screen body 121 away from the laser projection host 11, and is connected to the laser projection host 11 through a wire embedded in the fixing bracket 14 to supply power to the light source driving board f and the light valve driving board c.

The functional component 13 is located between the screen body 121 and the rear case 122 and connected to the screen body 121. The structure enables the volume of the laser projection host 11 to be reduced. When the laser projection host 11 is powered on, the laser projection host 11 is located at the second position h under the cooperation of the movable component 15, and can project pictures on the screen body 121, and when the laser projection host 11 is powered off, the laser projection host 11 is located at the first position g under the cooperation of the movable component 15, so that the structure enables the volume of the laser projection device 10 to be reduced when the laser projection host does not work. And the mobile assembly can realize that the laser projection host computer carries out accurate removal in two positions, and the laser projection host computer can not appear the offset scheduling problem than projection screen.

The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A laser projection device, characterized in that the laser projection device comprises:

2. The laser projection device of claim 1, wherein the functional component comprises a power board electrically connected to the optical projection component for outputting a voltage or current drive signal.

3. The laser projection device of claim 1, wherein the functional component comprises a control motherboard, the control motherboard being electrically connected to the laser projection host.

4. The laser projection device of claim 3, wherein the functional component comprises a wireless module, the wireless module being electrically connected to the control motherboard.

5. The laser projection device of claim 3, wherein the functional component comprises a display panel electrically connected to the control motherboard.

6. The laser projection device of claim 3, wherein the functional component comprises a key, the key being electrically connected to the control motherboard.

7. The laser projection device of claim 3, wherein the functional component comprises a speaker, the speaker being electrically connected to the control motherboard.

8. The laser projection device according to claim 2, wherein the optical projection unit includes a laser light source, a light modulation component, and a projection lens, the laser light source being connected to the light modulation component, the projection lens being connected to the light modulation component;

9. The laser projection device of claim 8, wherein the light modulation assembly comprises a light engine housing, a light valve located within the light engine housing, and a light valve driver board located outside the light engine housing and electrically connected to the light valve;

the power panel is electrically connected with the light valve driving board.

10. The laser projection device of claim 8, wherein the laser light source comprises a light source housing, a laser, and a light source driver board, the laser is located within the light source housing, the light source driver board is located outside the light source housing, the laser is electrically connected to the light source driver board, and the light source driver board is electrically connected to the power board.