Projection device

Abstract

The embodiment of the application belongs to the technical field of projection display, and relates to a projection device, which comprises a shell and a light homogenizing module. The shell is provided with a light exit area for emitting initial projection light; the light homogenizing module comprises a first optical element and a second optical element; the first optical element is arranged between the shell and the second optical element and is used for receiving the initial projection light; the second optical element is used for cooperating with the first optical element to convert the initial projection light into light shadow projection light and is used for emitting the light shadow projection light; wherein the second optical element is at least partially covered on the outer circumferential surface of the first optical element, an installation space is formed between the second optical element and the outer circumferential surface of the first optical element; and the shell is provided with an installation part which can be detachably installed in the installation space. The technical scheme provided by the application can simultaneously meet the needs of users for projection atmosphere and the needs of miniaturization of the projection device.

Description

Technical Field

[0001] This application relates to the field of projection technology, and in particular to a projection device. Background Technology

[0002] A projection device is a device that can project images or videos. However, current projection devices can only meet users' needs for watching movies and listening to music, and it is difficult to simultaneously meet users' needs for a projection atmosphere and the need for miniaturized projection devices. Utility Model Content

[0003] This application discloses a projection device that can simultaneously meet users' needs for projection atmosphere and the need for miniaturization of projection devices.

[0004] In a first aspect, this application relates to a projection device, comprising:

[0005] The housing has a light-emitting area for emitting the initial projected light; and

[0006] A uniform light module includes a first optical element and a second optical element; the first optical element is disposed between the housing and the second optical element and is used to receive the initial projection light; the second optical element is used to cooperate with the first optical element to convert the initial projection light into a shadow projection light and to emit the shadow projection light.

[0007] The second optical element is at least partially covered on the outer peripheral surface of the first optical element, and an installation space is formed between the second optical element and the outer peripheral surface of the first optical element; the housing is provided with a mounting part that can be detachably installed in the installation space.

[0008] The projection device of this application embodiment, by setting a first optical element and a second optical element, is used to convert the initial projection light emitted from the housing into light and shadow projection light. When the light and shadow projection light is projected onto the projection display carrier (such as a wall, screen, etc.), a projection effect with light and shadow patterns can be achieved, which is conducive to creating a specific projection atmosphere to meet the user's needs for the projection atmosphere. In addition, the first optical element of the projection device of this application embodiment is disposed between the housing and the second optical element, and an installation space is formed between the outer peripheral surfaces of the second optical element and the first optical element. The housing is provided with a mounting part that can be detachably installed in the mounting space. The mounting part is used to detachably connect to the light uniform module, which is conducive to reducing the overall size of the projection device, improving the compactness of the overall structure, and simultaneously meeting the user's needs for the projection atmosphere and the needs for miniaturization of the projection device.

[0009] In one embodiment, the housing includes a connected body and a decorative element, the decorative element being disposed close to the first optical element; the light-emitting area and the mounting portion are disposed on the decorative element.

[0010] In one embodiment, the mounting portion extends toward the first optical element in a direction close to the second optical element;

[0011] The mounting portion is at least partially disposed within the mounting space.

[0012] In one embodiment, the longitudinal section of the housing has a first distance from the outer edge of the mounting portion to the center of the light-emitting area; the first distance increases along the direction of the decorative element toward the first optical element.

[0013] In one embodiment, the mounting portion and the side of the decorative element near the first optical element enclose a receiving space; the first optical element is at least partially received in the receiving space.

[0014] In one embodiment, the cross-sectional area of ​​the mounting space increases along the direction of the decorative element toward the first optical element; and / or,

[0015] The outer peripheral surface of the first optical element matches the shape of the inner peripheral surface of the mounting portion.

[0016] In one embodiment, the second optical element includes a housing portion;

[0017] The cover portion includes an extension portion extending along the direction of the first optical element toward the decorative element, and the mounting space is formed between the extension portion and the outer peripheral surface of the first optical element; the mounting portion and the extension portion are detachably connected.

[0018] In one embodiment, the extension is an elastic extension; the elastic extension abuts against the mounting portion.

[0019] In one embodiment, a positioning part is provided on the side of the extension near the mounting part; when the extension and the mounting part are connected, the positioning part abuts against the mounting part.

[0020] In one embodiment, the positioning portion protrudes from the inner surface of the extension toward the direction close to the first optical element. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a projection device in one embodiment provided in this application.

[0023] Figure 2 This is a schematic diagram of the structure when the housing and the uniform light module are disassembled in one embodiment of this application.

[0024] Figure 3 This is a schematic diagram of a light and shadow pattern formed by light projection light in one embodiment provided in this application.

[0025] Figure 4 yes Figure 2 A sectional view along line AA.

[0026] Explanation of key component symbols:

[0027] 100 projection devices

[0028] Casing 1

[0029] Body 11

[0030] Light area 111

[0031] Center 111a of the light emitting area

[0032] Decorative Item 13

[0033] Installation Department 135

[0034] The outer edge 135a of the mounting section

[0035] Inner circumferential surface 13b of the mounting part

[0036] Uniform light module 3

[0037] First optical element 31

[0038] The outer peripheral surface 31a of the first optical element

[0039] First transmission section 311

[0040] Second optical element 32

[0041] Inner surface 32b of the extension

[0042] Positioning Unit 32c

[0043] Second transmission section 321

[0044] Base 322

[0045] Body part 323

[0046] Extension 3231

[0047] Light and shadow cavity 33

[0048] Installation space 5

[0049] Storage space 6

[0050] Initial projection light L1

[0051] Light and shadow projection light L2

[0052] Light and shadow pattern P

[0053] First distance H1

[0054] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0056] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this article are for illustrative purposes only.

[0057] It should be noted that the concepts of "first" and "second" mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0058] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4The projection device 100 of this application embodiment includes a housing 1 and a light-diffusing module 3. The housing 1 is provided with a light-emitting area 111 for emitting initial projection light L1. The light-diffusing module 3 includes a first optical element 31 and a second optical element 32. The first optical element 31 is disposed between the housing 1 and the second optical element 32 and is used to receive the initial projection light L1. The first optical element 31 and the second optical element 32 are used to convert the initial projection light L1 into a shadow projection light L2, and the second optical element 32 is used to emit the shadow projection light L2. The second optical element 32 at least partially covers the outer peripheral surface 31a of the first optical element 31, and a mounting space 5 is formed between the second optical element 32 and the outer peripheral surface 31a of the first optical element 31; the housing 1 is provided with a mounting part 135 that can be detachably mounted in the mounting space 5.

[0059] The projection device 100 of this application embodiment is configured with a first optical element 31 and a second optical element 32. The first optical element 31 and the second optical element 32 are used to convert the initial projection light L1 emitted from the housing 1 into a light and shadow projection light L2. When the light and shadow projection light L2 is projected onto the projection display carrier (such as a wall, screen, etc.), a projection effect with a light and shadow pattern P can be achieved, which is conducive to creating a specific projection atmosphere to meet the user's needs for the projection atmosphere.

[0060] Furthermore, in this embodiment of the projection device 100, the first optical element 31 is disposed between the housing 1 and the second optical element 32, and an installation space 5 is formed between the second optical element 32 and the outer peripheral surface 31a of the first optical element 31. The mounting portion 135 of the housing 1 is accommodated in the installation space 5 and is used for detachable connection with the uniform light module 3. This is beneficial to reducing the overall volume of the projection device 100, improving the compactness of the overall structure, and simultaneously meeting the user's needs for projection atmosphere and the miniaturization of the projection device 100.

[0061] When the projection device 100 is in use, the initial projection light L1 emitted from the housing 1, after passing through the first optical element 31 and the second optical element 32, forms a projection light L2 that creates a projection image with a light and shadow pattern P on the projection display carrier (such as a wall, screen, etc.), thereby creating a projection atmosphere. Furthermore, the light and shadow pattern P can change with the projected content, further enhancing the diversity of the projection atmosphere. For example, when the projected content of the initial projection light L1 emitted from the housing 1 is a static image, the final projection image's light and shadow pattern P is a static image; conversely, when the projected content of the initial projection light L1 emitted from the housing 1 is a dynamic image, the final projection image's light and shadow pattern P is a dynamic image. The light and shadow pattern P includes, but is not limited to, water ripple light and shadow patterns P, aurora light and shadow patterns P, etc., and this application does not impose any limitations.

[0062] In some embodiments, please refer to Figure 2 and Figure 4 The housing 1 includes a body 11 connected to the housing and a decorative element 13. The decorative element 13 is disposed near the first optical element 31; a light-emitting area 111 and a mounting portion 135 are disposed on the decorative element 13. The decorative element 13 is disposed on the body 11 and surrounds the light-emitting area 111.

[0063] By setting the light-emitting area 111 and the mounting part 135 on the decorative part 13, the initial projection light L1 emitted from the light-emitting area 111 is incident on the first optical element 31. The mounting part 135 on the decorative part 13 is detachably installed in the mounting space 5, so that the housing 1 can be detachably connected to the light-diffusing module 3. Users can freely disassemble or install the light-diffusing module 3 according to their needs, which is conducive to meeting the user's needs for the projection atmosphere at any time and improving the flexibility of the projection device 100.

[0064] In some embodiments, the mounting portion 135 extends toward the first optical element 31 and toward the second optical element 32; the mounting portion 135 is at least partially disposed in the mounting space 5.

[0065] By setting the mounting portion 135 on the decorative element 13 to be at least partially disposed in the mounting space 5, such that the mounting portion 135 on the decorative element 13 is at least partially located between the outer peripheral surface 31a of the second optical element 32 and the first optical element 31, it is beneficial to reduce space waste, improve the compactness of the overall structure of the projection device 100, and thus reduce the overall volume of the projection device 100.

[0066] In some embodiments, please refer to Figure 2 and Figure 4 The housing 1 has a first distance H1 from the outer edge 135a of the mounting portion 135 to the center 111a of the light-emitting area 111 on its longitudinal section; the first distance H1 increases along the direction of the decorative part 13 toward the first optical element 31.

[0067] When the decorative element 13 is detachably connected to the light-diffusing module 3, the mounting portion 135 on the decorative element 13 is housed in the mounting space 5. Since the first distance H1 increases along the direction of the decorative element 13 toward the first optical element 31, the outer surface of the mounting portion 135 is inclined toward the outer side of the decorative element 13, so that the light-diffusing module 3 at least partially abuts against the outer edge 135a of the mounting portion 135, which can improve the connection stability and connection reliability of the decorative element 13 and the light-diffusing module 3.

[0068] In some embodiments, the mounting portion 135 and the decorative element 13 enclose the side of the first optical element 31 to form an accommodating space 6; the first optical element 31 is at least partially accommodated in the accommodating space 6.

[0069] By setting up the accommodating space 6, the first optical element 31 can be at least partially accommodated in the accommodating space 6, which is conducive to further improving the compactness of the overall structure of the projection device 100, further reducing the waste of space, and thus reducing the overall volume of the projection device 100.

[0070] In some embodiments, please refer to Figure 2 and Figure 4 The cross-sectional area of ​​the accommodating space 6 increases along the direction of the decorative element 13 toward the first optical element 31.

[0071] Since the cross-sectional area of ​​the accommodating space 6 increases along the direction of the decorative part 13 toward the first optical element 31, it can serve as a guide when the user installs the decorative part 13 and the light-diffusing module 3, which helps to improve the ease of installation of the light-diffusing module 3 and the decorative part 13.

[0072] The first optical element 31 includes a first transmissive portion 311 for incident initial projection light L1. The second optical element 32 includes a second transmissive portion 321. The first optical element 31 and the second optical element 32 are sealed together, forming a light-shadow cavity 33 between the first transmissive portion 311 and the second transmissive portion 321; the light-shadow cavity 33 is used to form a light-shadow projection light L2 from the initial projection light L1; the second transmissive portion 321 is used to emit the light-shadow projection light L2.

[0073] The first transmission part 311 of the first optical element 31 and the second transmission part 321 of the second optical element 32 are sealed and connected to form a light and shadow cavity 33. The light and shadow cavity 33 is used to transform the initial projection light L1 into a light and shadow projection light L2, which is emitted from the second transmission part 321. When the light and shadow projection light L2 is projected onto the projection display carrier (such as a wall, screen, etc.), a projection effect with a light and shadow pattern P can be achieved, which is conducive to creating a specific projection atmosphere to meet the user's needs for the projection atmosphere, thereby meeting the different projection needs of the user.

[0074] In some embodiments, please refer to Figure 2 and Figure 4 The shape of the outer peripheral surface 31a of the first optical element 31 matches the shape of the inner peripheral surface 13b of the mounting portion 135. For example, the outer peripheral surface 31a of the first optical element 31 is an annular arc surface, and the annular arc surface is inclined towards the outer side of the first optical element 31. The inner peripheral surface 13b of the mounting portion 135 is also an annular arc surface, and the annular arc surface is inclined towards the outer side of the decorative member 13. The outer peripheral surface 31a of the first optical element 31 and the inner peripheral surface 13b of the mounting portion 135 form a positioning fit, and the shape of the outer peripheral surface 31a of the first optical element 31 matches the shape of the inner peripheral surface 13b of the mounting portion 135, thereby allowing it to be used to limit the position of the decorative member 13.

[0075] When the decorative element 13 is detachably connected to the light-diffusing module 3, by setting the inner peripheral surface 13b of the mounting portion 135 as an annular arc surface inclined towards the outer side of the decorative element 13, and the outer peripheral surface 31a of the first optical element 31 also being an annular arc surface, that is, the shape of the outer peripheral surface 31a of the first optical element 31 matches the shape of the inner peripheral surface 13b of the mounting portion 135, the outer peripheral surface 31a of the first optical element 31 and the inner peripheral surface 13b of the mounting portion 135 can form a positioning fit, which can improve the convenience of assembling the decorative element 13 and the first optical element 31, and is conducive to improving the connection stability of the decorative element 13 and the light-diffusing module 3, and can further make the overall structure of the projection device 100 compact.

[0076] In some embodiments, please refer to Figure 2 and Figure 4 The second optical element 32 includes a housing portion 323 connected to the second transmission portion 321. The housing portion 323 includes a base 322 and an extension portion 3231 extending along the direction of the first optical element 31 near the decorative member 13. The two sides of the base 322 are respectively connected and fixed to the second transmission portion 321 and the extension portion 3231. An installation space 5 is formed between the extension portion 3231 and the outer peripheral surface 31a of the first optical element 31. The mounting portion 135 is detachably connected to the extension portion 3231. With the above arrangement, the mounting portion 135 of the housing 1 can be detachably connected to the light-diffusing module 3 through the extension portion 3231. Users can freely disassemble or install the light-diffusing module 3 according to their needs, which is beneficial to further improve the flexibility of the projection device 100.

[0077] In some embodiments, the extension 3231 is an elastic extension. By generating elastic deformation, the elastic extension at least partially abuts against the outer edge 135a of the mounting portion 135, thereby enabling a detachable connection between the second optical element 32 and the decorative element 13, which helps to improve the stability of the connection between the two.

[0078] In some embodiments, please refer to Figure 2 and Figure 4 A positioning part 32c is provided on the side of the extension 3231 near the mounting part 135. When the extension 3231 and the mounting part 135 are connected, the positioning part 32c abuts against the mounting part 135. The positioning part 32c protrudes from the inner surface of the extension 3231 toward the direction near the first optical element 31. The positioning part 32c abuts against the outer edge 135a of the mounting part 135. When the decorative part 13 is detachably connected to the light-diffusing module 3, the positioning part 32c protrudes from the inner surface 32b of the extension 3231 toward the direction near the first optical element 31 and abuts against the outer edge 135a of the mounting part 135. This can enhance the tightness of the connection between the second optical element 32 and the decorative part 13, which is beneficial to the connection stability of the second optical element 32 and the decorative part 13.

[0079] The projection device 100 of this embodiment converts the initial projection light L1 emitted from the housing 1 into a shadow projection light L2. When the shadow projection light L2 is projected onto a projection display carrier (such as a wall or screen), a projection effect with a shadow pattern P can be achieved, which is beneficial for creating a specific projection atmosphere to meet the user's needs for the projection atmosphere. In addition, the first optical element 31 of the projection device 100 of this embodiment is disposed between the housing 1 and the second optical element 32. An installation space 5 is formed between the second optical element 32 and the outer peripheral surface 31a of the first optical element 31. The mounting part 135 of the housing 1 is accommodated in the installation space 5 and is used for detachable connection with the light uniform module 3. This is beneficial for reducing the overall volume of the projection device 100, improving the compactness of the overall structure, and simultaneously meeting the user's needs for the projection atmosphere and the miniaturization of the projection device 100.

[0080] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A projection device, characterized in that, include: The housing is provided with a light-emitting area for emitting the initial projected light; as well as A uniform light module includes a first optical element and a second optical element; The first optical element is disposed between the housing and the second optical element, and is used to receive the initial projection light; The second optical element is used in conjunction with the first optical element to convert the initial projection light into a shadow projection light, and is used to emit the shadow projection light; The second optical element is at least partially covered on the outer peripheral surface of the first optical element, and an installation space is formed between the second optical element and the outer peripheral surface of the first optical element; the housing is provided with a mounting part that can be detachably installed in the installation space.

2. The projection device according to claim 1, characterized in that, The housing includes a connected body and a decorative element, the decorative element being disposed close to the first optical element; the light-emitting area and the mounting portion are disposed on the decorative element.

3. The projection device according to claim 2, characterized in that, The mounting portion extends toward the first optical element in a direction close to the second optical element; The mounting portion is at least partially disposed within the mounting space.

4. The projection device according to claim 3, characterized in that, The longitudinal section of the housing has a first distance from the outer edge of the mounting portion to the center of the light-emitting area; the first distance increases along the direction of the decorative element toward the first optical element.

5. The projection device according to claim 3, characterized in that, The mounting portion and the side of the decorative element closest to the first optical element enclose a receiving space; the first optical element is at least partially received in the receiving space.

6. The projection device according to claim 5, characterized in that, The cross-sectional area of ​​the installation space increases along the direction of the decorative element toward the first optical element; And / or, The outer peripheral surface shape of the first optical element matches the inner peripheral surface shape of the mounting portion.

7. The projection device according to any one of claims 3 to 6, characterized in that, The second optical element includes a housing portion; The cover portion includes an extension portion extending along the direction of the first optical element toward the decorative element, and the mounting space is formed between the extension portion and the outer peripheral surface of the first optical element; the mounting portion and the extension portion are detachably connected.

8. The projection device according to claim 7, characterized in that, The extension is an elastic extension; the elastic extension abuts against the mounting portion.

9. The projection device according to claim 7, characterized in that, A positioning part is provided on the side of the extension near the mounting part; when the extension and the mounting part are connected, the positioning part abuts against the mounting part.

10. The projection device according to claim 9, characterized in that, The positioning portion protrudes from the inner surface of the extension toward the direction close to the first optical element.

Images