CN217305695U

CN217305695U - Multi-light source device for projector

Info

Publication number: CN217305695U
Application number: CN202220314531.8U
Authority: CN
Inventors: 郑小平; 童玉珍
Original assignee: Dongguan Institute of Opto Electronics Peking University
Current assignee: Dongguan Institute of Opto Electronics Peking University
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-08-26
Anticipated expiration: 2032-02-16

Abstract

A multi-light source device for a projector comprises a shield, a light source assembly and an adjusting assembly, wherein the light source assembly comprises a plurality of light-emitting elements, power supply connecting pieces and power supply interfaces, the light-emitting elements are arranged in the shield, the light-emitting elements and the power supply connecting pieces are in one-to-one correspondence, the light-emitting elements are electrically connected with the power supply connecting pieces, and the power supply interfaces are selectively and electrically connected with one of the power supply connecting pieces to control the operation of the corresponding light-emitting elements; the adjusting component comprises a rotating shaft, a rotating disc, a power element and a controller, the rotating shaft penetrates through the protective cover, the rotating disc is fixedly arranged on the rotating shaft, the light-emitting elements are arranged on the rotating disc at intervals, the power element is used for driving the rotating shaft to rotate, and the controller is used for controlling the power element to operate. The multi-light source device for the projector drives the turntable to rotate through the power element, so that different light-emitting elements are selected, and the light source is switched rapidly; the power interface is selectively and electrically connected with one of the power connectors to control the operation of the corresponding light-emitting element, and the structure is compact and the use is convenient.

Description

Multi-light source device for projector

Technical Field

The utility model relates to a show technical field, especially relate to a many light source devices for projector.

Background

Most of the projectors on the market today use LCD or DLP technology, and the optical engine is mainly a part of the core of the projector that uses a light source to illuminate the LCD panel or DMD micromirror device through illumination optics, and then images the image on the projection screen through the projection lens. In order to ensure the brightness of the projected image, the light source in the projector is mostly in a high-power working state, the working life of the projector is limited to a certain extent, and after the projector is used for a period of time, the light source fails and needs to be replaced; however, it takes a certain time to replace the light source, and especially, the light source is suddenly disabled during the use process of the user, which causes inconvenience to the user. Or, different projectors are needed according to the use environment, and the cost is high.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a multi-light source device for a projector, which is convenient to use.

A multi-light source device for a projector comprises a shield, a light source assembly and an adjusting assembly, wherein the light source assembly comprises light-emitting elements, power connectors and power interfaces, the light-emitting elements are arranged in the shield, the light-emitting elements and the power connectors are respectively in a plurality and are in one-to-one correspondence, the light-emitting elements are electrically connected with the power connectors, and the power interfaces are selectively and electrically connected with one of the power connectors to control the operation of the corresponding light-emitting elements; the adjusting assembly comprises a rotating shaft, a rotating disc, a power element and a controller, the rotating shaft penetrates through the protective cover, the rotating disc is fixedly installed on the rotating shaft, the light-emitting elements are installed on the rotating disc at intervals, the power element is used for driving the rotating shaft to rotate, and the controller is used for controlling the power element to operate.

In one embodiment, the shield comprises a shell and a reflective layer coated on the inner wall of the shell.

In one embodiment, the cross section of the shell is arc-shaped.

In one embodiment, the shield further comprises a lens, and the lens is covered on the light outlet of the shell.

In one embodiment, the longitudinal section of the rotating disk is a regular polygon, and each light-emitting element is located on one side of the regular polygon.

In one embodiment, the light source assembly further includes a plurality of heat dissipation members, each of the heat dissipation members is mounted on one side of the turntable, the light emitting elements are mounted on the heat dissipation members, and the light emitting elements are arranged in one-to-one correspondence with the heat dissipation members.

In one embodiment, the controller is one of a wireless remote control and a PLC control.

In one embodiment, the light emitting element is one or both of an LED light source and an LD light source.

In one embodiment, the adjustment assembly further includes a driving wheel and a driven wheel engaged with the driving wheel, the driving wheel is mounted on the power element, and the driven wheel is mounted on the rotating shaft.

In one embodiment, the power connection is a brush; the power element is a motor.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a multi-light source device for projector drives the rotary table to rotate through the power element, thereby selecting different light-emitting elements and rapidly switching the light source; the power interface is selectively and electrically connected with one of the power connectors to control the operation of the corresponding light-emitting element, so that the interference of other light sources or the waste of power sources is avoided; the multi-light source device for the projector has the advantages of compact structure, small volume, easy operation and convenient use.

Drawings

Fig. 1 is a schematic view of an assembly structure of a multi-light source device for a projector according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of the multi-light source apparatus for the projector shown in FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a sectional view of the turntable when the longitudinal section is a regular triangle.

Reference is made to the accompanying drawings in which:

a multi-light source device 100 for a projector;

the light source module comprises a shield 10, a shell 11, a reflective layer 12, a lens 13, a light source assembly 20, a light-emitting element 21, a power interface 22, an adjusting assembly 30, a rotating shaft 31, a rotating disc 32, a power element 33, a controller 34, a driving wheel 35 and a driven wheel 36.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully below. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When the number of an element is referred to as "a plurality," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a multi-light source device 100 for a projector according to an embodiment of the present invention includes a cover 10, a light source assembly 20 and an adjustment assembly 30, wherein the light source assembly 20 includes a light emitting element 21, a power connector (not shown) and a power interface 22, and the adjustment assembly 30 includes a rotating shaft 31, a rotating disc 32, a power element 33 and a controller 34; the multi-light source device 100 for the projector of the embodiment drives the rotating disc 32 to rotate through the power element 33, so that different light emitting elements 21 can be selected, and the light sources can be switched rapidly; the power interface 22 is selectively electrically connected with one of the power connectors to control the operation of the corresponding light-emitting element 21, so as to avoid the interference of other light sources or the waste of power.

As shown in fig. 1 and fig. 2, in the present embodiment, the shield 10 includes a housing 11 and a reflective layer 12, the reflective layer 12 is coated on an inner wall of the housing 11 to enhance light concentration and reduce light loss; optionally, the shield 10 further includes a lens 13, and the lens 13 is covered on the light outlet of the housing 11; furthermore, the cross section of the shell 11 is arc-shaped, so that light rays are convenient to concentrate; preferably, the cross section of the shell 11 is semi-elliptical or semicircular, so that the light is symmetrical, and the brightness and the focus of the light can be easily adjusted; the lens 13 is a fresnel lens 13, and is used for adjusting the light concentration, the focal point, the irradiation range, the light intensity and the like of the light source.

Referring to fig. 1 and fig. 2 again, the light source assembly 20 includes a plurality of light emitting elements 21, a plurality of power connectors (not shown), and a power interface 22, the light emitting elements 21 are installed in the housing 11, the light emitting elements 21 are corresponding to the power connectors one by one, the light emitting elements 21 are electrically connected to the power connectors, and the power interface 22 is selectively electrically connected to one of the power connectors to control the operation of the corresponding light emitting element 21; alternatively, the light emitting elements 21 are one or two of LED light sources and LD light sources, that is, the light emitting elements 21 may be the same or different; the power supply connector is a brush, and the power supply interface 22 is connected with an external power supply. When the power connector is electrically connected with the power interface 22, the light-emitting element 21 corresponding to the power connector is turned on, and the other light-emitting elements 21 are turned off; when the power connection is disconnected from the power interface 22, the light emitting element 21 corresponding to the power connection is turned off. In the working state, the light emitting element 21 close to the lens 13 is used as a working light source and is positioned at the focal center of the shell 11, so that light can be uniformly emitted, and the utilization rate of the light source is improved. In one embodiment, the light source assembly 20 further includes a plurality of heat dissipation members (not shown), each heat dissipation member is mounted on one side of the rotating disc 32, the light emitting elements 21 are mounted on the heat dissipation members, and each light emitting element 21 is disposed in one-to-one correspondence with the heat dissipation member. Optionally, the heat dissipation member is a heat sink, which guides heat emitted by the light source out, and reduces heat concentration.

As shown in fig. 1 to 3, the adjusting assembly 30 includes a rotating shaft 31, a rotating disc 32, a power element 33 and a controller 34, the rotating shaft 31 penetrates through the protective cover, the rotating disc 32 is fixedly installed on the rotating shaft 31, the light emitting elements 21 are installed on the rotating disc 32 at intervals, the power connector is installed on the rotating disc 32, the power element 33 is used for driving the rotating shaft 31 to rotate, and the controller 34 is used for controlling the operation of the power element 33. Alternatively, the longitudinal section of the turntable 32 is a regular polygon, and each light emitting element 21 is located on one side of the regular polygon; the power element 33 is a stepping motor; further, the longitudinal section of the rotating disc 32 is a regular hexagon; the power element 33 is a servo motor, so that the precision is higher; in other embodiments, the longitudinal cross-section of the carousel 32 is a regular triangle, as shown in FIG. 4. The controller 34 is one of wireless remote control and PLC control; when the controller 34 is a wireless remote control, the required light emitting element 21 is selected by a key of the remote controller, and the controller 34 calculates parameters such as the operation time, the current and the like of the power element 33 through analysis according to the received signal, so that the power element 33 rotates by a certain angle, and the switching of the light emitting element 21 is realized. In one embodiment, the adjusting assembly 30 further includes a driving wheel 35 and a driven wheel 36 engaging with the driving wheel 35, the driving wheel 35 is mounted on the power element 33, the driven wheel 36 is mounted on the rotating shaft 31, and the gear transmission has the characteristics of high precision, high stability and the like.

When the LED lamp is used, the controller 34 controls the operation of the power element 33, the power element 33 drives the rotating shaft 31 to rotate, and the rotating shaft 31 drives the rotating disc 32 to rotate, so that different light-emitting elements 21 are selected, a light source can be switched quickly, and the LED lamp is convenient to use; the power interface 22 is selectively electrically connected with one of the power connectors to control the operation of the corresponding light-emitting element 21, so that the interference of other light sources or the waste of power sources is avoided; in the working state, the light emitting element 21 close to the lens 13 is used as a working light source and is positioned at the focal center of the shell 11, so that light can be uniformly emitted, and the utilization rate of the light source is improved.

The multi-light source device 100 for the projector of the present invention drives the rotary plate 32 to rotate through the power element 33, so as to select different light emitting elements 21 and rapidly switch light sources; the power interface 22 is selectively electrically connected with one of the power connectors to control the operation of the corresponding light-emitting element 21, so that the interference of other light sources or the waste of power sources is avoided; the multi-light source device 100 for the projector has the advantages of compact structure, small volume, easy operation and convenient use.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A multi-light source device for a projector is characterized by comprising a shield, a light source assembly and an adjusting assembly, wherein the light source assembly comprises light-emitting elements, power connectors and power interfaces, the light-emitting elements are arranged in the shield, the light-emitting elements and the power connectors are respectively in one-to-one correspondence, the light-emitting elements are electrically connected with the power connectors, and the power interfaces are selectively and electrically connected with one of the power connectors to control the operation of the corresponding light-emitting elements; the adjusting assembly comprises a rotating shaft, a rotating disc, a power element and a controller, the rotating shaft penetrates through the protective cover, the rotating disc is fixedly installed on the rotating shaft, the light-emitting elements are installed on the rotating disc at intervals, the power element is used for driving the rotating shaft to rotate, and the controller is used for controlling the power element to operate.

2. The multi-light source device for projectors of claim 1, wherein the shield comprises a housing and a reflective layer, the reflective layer being coated on an inner wall of the housing.

3. The multi-light source apparatus for a projector as claimed in claim 2, wherein the housing has an arc-shaped cross section.

4. The multi-light source device for projectors of claim 2, wherein the cover further comprises a lens, and the lens cover is provided at the light exit of the housing.

5. The multi-light source apparatus for a projector according to claim 1, wherein the vertical cross section of the turntable is a regular polygon, and each of the light emitting elements is located on one side of the regular polygon.

6. The multi-light source device for the projector as claimed in claim 5, wherein the light source module further comprises a plurality of heat dissipation members, each of the heat dissipation members is mounted on one side of the turntable, the light emitting elements are mounted on the heat dissipation members, and the light emitting elements are disposed in one-to-one correspondence with the heat dissipation members.

7. The multi-light source apparatus for projectors of claim 1, wherein the controller is one of a wireless remote control and a PLC control.

8. The multi-light source device for projectors of claim 1, wherein the light emitting elements are one or both of LED light sources and LD light sources.

9. The multi-light source apparatus for a projector as claimed in claim 1, wherein the adjustment assembly further includes a driving wheel and a driven wheel engaging with the driving wheel, the driving wheel being mounted to the power unit, the driven wheel being mounted to the rotation shaft.

10. The multi-light source device for projector as claimed in claim 1, wherein the power supply connection member is a brush; the power element is a motor.