CN214670041U

CN214670041U - Projection device with zooming mechanism

Info

Publication number: CN214670041U
Application number: CN202120975810.4U
Authority: CN
Inventors: 黄忠东; 杨杰
Original assignee: Emate Electronics Co ltd
Current assignee: Emate Electronics Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2021-11-09
Anticipated expiration: 2031-05-10

Abstract

The utility model relates to a projection arrangement with mechanism zooms, including the shell body, the inside of shell body is equipped with interior casing, installs the projection module on the interior casing, is connected with adjustment mechanism between interior casing and the shell body for along the position of projection axial overall adjustment projection module. The distance between the projection module and the projection surface is changed by adopting a mode of integrally adjusting the position of the projection module along the axial direction of the projection, so that the projection definition is adjusted. Compared with the traditional projection film group with a certain lens independently adjusted, the projection film group has the advantages of simpler structure, lower cost and more convenient maintenance.

Description

Projection device with zooming mechanism

Technical Field

The utility model relates to a projection arrangement with zoom mechanism.

Background

The traditional projection device has the defects of complicated and fine structure, high cost, easy damage and inconvenient maintenance in the process of zooming to adjust the position of a certain lens in a projection film group.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a projection device with zoom mechanism, not only simple structure, convenient high efficiency moreover.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a projection arrangement with mechanism zooms, includes the shell body, and the inside of shell body is equipped with interior casing, installs the projection module on the interior casing, is connected with adjustment mechanism between interior casing and the shell body for along the position of projection axial integral adjustment projection module.

Preferably, the projection module comprises an LED lamp, an LCD, a small lens and a large lens in sequence along the projection axial direction towards the projection surface side, and the front end surface of the outer shell is provided with a projection through hole for projecting light rays.

Preferably, the inner cavity of the outer shell is a square cavity extending forwards and backwards, the inner shell is in a square shell shape, the square shell is placed in the square cavity to be adjusted in a front-back moving mode, and the rotational freedom degree of the square shell is limited.

Preferably, adjustment mechanism includes the focusing knob, and the axial of focusing knob is the projection axial, and the last coaxial screw rod that is equipped with of focusing knob, screw rod and focusing knob link firmly as an organic whole and carry out synchronous revolution, and both ends are all installed on the inside end wall of shell body around the screw rod and are rotated, and the screw rod in focusing knob the place ahead is with interior casing rear end looks spiro union, and interior casing rear end lateral part has a concave part that is used for stepping down the screw rod front end wall.

Preferably, a cavity is formed in the front end face of the focusing knob in the direction of the rear end face, and the cavity is used for accommodating the rear end portion of the inner shell.

Preferably, an adjusting through hole is formed in the top cover of the outer shell, the focusing knob is partially exposed out of the adjusting through hole, and the manual rotation is facilitated and the axial movement freedom degree of the focusing knob is limited.

Compared with the prior art, the utility model discloses following beneficial effect has: the distance between the projection module and the projection surface is changed by adopting a mode of integrally adjusting the position of the projection module along the axial direction of the projection, so that the projection definition is adjusted. Compared with the traditional projection film group with a certain lens independently adjusted, the projection film group has the advantages of simpler structure, lower cost and more convenient maintenance.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the inner housing and the adjusting mechanism.

Fig. 3 is a schematic view of the inner housing and the adjustment mechanism (with half of the inner housing removed).

Fig. 4 is a schematic structural diagram of the outer and inner housings and the adjusting mechanism in embodiment 1 of the present invention.

Fig. 5 is a schematic structural view of the outer and inner housings and the adjusting mechanism in embodiment 2 of the present invention.

FIG. 6 is a schematic view of the structure of the adjusting through hole and the focus knob.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. 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 application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

As shown in fig. 1 to 6, the present embodiment provides a projection apparatus with a zoom mechanism, which includes an outer casing 1, an inner casing 2 is disposed inside the outer casing, a projection module is mounted on the inner casing, and an adjusting mechanism is connected between the inner casing and the outer casing for integrally adjusting the position of the projection module along the projection axis.

The embodiment of the utility model provides an in, the projection module comprises LED lamp 3, LCD, little lens, big lens 8 towards the projection face side along the projection axial in proper order, and the preceding terminal surface of shell body has projection opening 9 for projection light jets out.

The embodiment of the utility model provides an in, the inner chamber of shell body is the square cavity 10 of front and back extension, and the appearance of interior casing is square shell, and square shell is placed and is carried out the back-and-forth movement in square cavity and adjust, and square shell's rotational degree of freedom is restricted.

The embodiment of the utility model provides an in, adjustment mechanism includes focusing knob 11, focusing knob's axial is the projection axial, and the last coaxial screw rod 12 that is equipped with of focusing knob, and the screw rod links firmly as an organic whole with focusing knob and carries out synchronous revolution, and both ends are all installed and are carried out the rotation on the inside end wall 13 of shell body around the screw rod, and the screw rod in focusing knob the place ahead and interior casing rear end portion looks spiro union, and interior casing rear end lateral part has a concave part 14 that is used for stepping down the screw rod front end wall.

In the embodiment of the present invention, the front end face of the focusing knob is provided with a cavity 15 toward the rear end face, and the cavity is used for accommodating the rear end portion of the inner casing.

The embodiment of the utility model provides an in, seted up one on the top cap of shell body and adjusted opening 16, focusing knob part exposes the regulation opening, and the hand of being convenient for is revolved and is restricted focusing knob's axial displacement degree of freedom.

The embodiment of the utility model provides an in, interior casing is inside to be equipped with LCD one installation position, two installation positions of LCD, little lens one installation position, two installation positions of little lens in proper order along the projection axial towards the projection face side. The appropriate mounting positions of the LCD and the small lens can be selected according to the needs.

In the embodiment 1 of the present invention, a first LCD 4 is installed at a first LCD installation position, and a first small lens 6 is installed at a first small lens installation position.

The embodiment of the utility model provides a 2, two 5 dress of LCD are in two installation positions of LCD, and two 7 installations of little lens are in two installation positions of little lens.

The working principle of the projection device with the zooming mechanism is as follows: the hand is revolved the focusing knob that the part exposes the regulation opening, because the axial displacement degree of freedom of regulation opening restriction focusing knob, therefore the focusing knob drives the screw rod synchronous revolution, because the screw rod in focusing knob the place ahead is with interior casing rear end looks spiro union, therefore interior casing can the axial displacement fine setting position around. The distance between the projection module and the projection surface is changed by adopting a mode of integrally adjusting the position of the projection module along the axial direction of the projection, so that the projection definition is adjusted. Compared with the traditional projection film group with a certain lens independently adjusted, the projection film group has the advantages of simpler structure, lower cost and more convenient maintenance.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A projection apparatus having a zoom mechanism, characterized in that: including the shell body, the inside of shell body is equipped with interior casing, installs the projection module on the interior casing, is connected with adjustment mechanism between interior casing and the shell body for along the position of projection axial integral adjustment projection module.

2. A projection apparatus having a zoom mechanism according to claim 1, wherein: the projection module is towards the projection face side and comprises LED lamp, LCD, little lens, big lens along the projection axial in proper order, and the front end face of shell body has the projection through-hole for projection light jets out.

3. A projection apparatus having a zoom mechanism according to claim 1, wherein: the inner cavity of the outer shell is a square cavity extending front and back, the outer shape of the inner shell is a square shell, the square shell is placed in the square cavity to be adjusted in a front-back moving mode, and the rotational freedom degree of the square shell is limited.

4. A projection apparatus having a zoom mechanism according to claim 3, wherein: the adjusting mechanism comprises a focusing knob, the axial direction of the focusing knob is the axial direction of the projection, a screw rod is coaxially arranged on the focusing knob, the screw rod and the focusing knob are fixedly connected into a whole to be synchronously rotated, the front end and the rear end of the screw rod are both installed on the end wall inside the outer shell to be rotated, the screw rod in front of the focusing knob is in threaded connection with the rear end part of the inner shell, and the rear end side part of the inner shell is provided with a concave part used for yielding the end wall of the front end of the screw rod.

5. A projection apparatus having a zoom mechanism according to claim 4, wherein: the front end face of the focusing knob is provided with a concave cavity towards the rear end face, and the concave cavity is used for accommodating the rear end part of the inner shell.

6. A projection apparatus having a zoom mechanism according to claim 5, wherein: an adjusting opening is formed in the top cover of the outer shell, the focusing knob is partially exposed out of the adjusting opening, and the manual rotation is facilitated and the axial movement freedom degree of the focusing knob is limited.