Light source module and projector

Abstract

The utility model belongs to the technical field of projectors, and discloses a light source module and a projector. The light source module comprises two L-shaped shells and four reflectors, each L-shaped shell comprises a first shading wall parallel to a first direction and a second shading wall parallel to a second direction, and the first shading walls and the second shading walls are integrally formed. The first shading wall of each L-shaped shell is connected to the second shading wall of the other L-shaped shell; the four reflectors are correspondingly attached to the inner walls of the two first light shielding walls and the inner walls of the two second light shielding walls, a light source reflection space is defined by the four reflectors, and the longitudinal sectional area of the light source reflection space is gradually increased in the third direction. The light-gathering funnel of the light source module is simple in structure and convenient to assemble, the production efficiency can be improved, the production quality of the formed light-gathering funnel is higher, and the yield is higher.

Description

Technical Field

[0001] This utility model relates to the field of projector technology, and in particular to a light source module and a projector. Background Technology

[0002] An LCD projector consists of three basic parts: a light source module, an optical system, and an LCD screen module. The strong light emitted by the light source module is projected onto the LCD screen through lenses in the optical system. The liquid crystal molecules on the LCD screen change under the influence of an electric field, and through the modulation of the RGB primary colors, an image is ultimately formed. The brightness and uniformity of the light emitted by the light source module affect the final image quality, while the light-gathering effect of the reflective funnel in the light source module directly affects the brightness and uniformity of the light source.

[0003] In existing light source modules, the reflective funnels are mostly integrally molded funnel-shaped or bowl-shaped shells. The inner wall of the shell is coated with an electroplated reflective layer or a reflector is attached to achieve light reflection and focusing. Electroplating to form the reflective layer is costly, and the resulting layer has poor uniformity in thickness, leading to mediocre light focusing. Attaching a reflector requires placing it inside the shell, making it difficult to position. Multiple positioning and re-attaching steps are needed to ensure proper placement, resulting in a complex installation process and a low yield rate.

[0004] Therefore, there is an urgent need to provide a new type of light source module and projector to solve the above-mentioned technical problems in the existing technology. Utility Model Content

[0005] The purpose of this invention is to provide a light source module with a simple structure, which is easy to assemble into the required reflective funnel, and can reduce production costs and improve production quality.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The light source module includes two L-shaped housings and four reflectors. Each L-shaped housing includes a first light-shielding wall parallel to a first direction and a second light-shielding wall parallel to a second direction, and the first and second light-shielding walls are integrally formed. The first light-shielding wall of each L-shaped housing is connected to the second light-shielding wall of the other L-shaped housing. The four reflectors are correspondingly attached to the inner walls of the two first light-shielding walls and the two second light-shielding walls, and the four reflectors form a light source reflection space. The cross-sectional area of ​​the light source reflection space gradually increases along a third direction. The first direction, the second direction, and the third direction are all perpendicular to each other.

[0008] Optionally, either the end of the first light-shielding wall away from the second light-shielding wall along the first direction or the end of the second light-shielding wall away from the first light-shielding wall along the second direction is provided with a fixing buckle, and the other is provided with a buckle protrusion that engages with the fixing buckle.

[0009] Optionally, the first light-shielding wall is provided with the aforementioned fixing buckle, and the second light-shielding wall is provided with a receiving groove at one end away from the first light-shielding wall along the second direction. The fixing buckle of the other L-shaped housing is fitted into the receiving groove, and the inner wall of the receiving groove is provided with the aforementioned buckle protrusion.

[0010] Optionally, the aforementioned fixing buckle is provided with multiple buckle holes, and the aforementioned buckle protrusions in the aforementioned receiving groove are provided with multiple buckle protrusions, and the aforementioned buckle protrusions are respectively fitted into the aforementioned buckle holes.

[0011] Optionally, either the end of the first light-shielding wall away from the second light-shielding wall along the first direction or the end of the second light-shielding wall away from the first light-shielding wall along the second direction is provided with a dovetail tenon, and the other is provided with a dovetail groove that engages with the dovetail tenon.

[0012] Optionally, multiple dovetail tenons and dovetail grooves are provided in a one-to-one correspondence.

[0013] Optionally, a fixing buckle is provided between any two adjacent dovetail grooves, and a receiving groove is provided between any two adjacent dovetail tenons.

[0014] Optionally, the L-shaped housing is a one-piece injection-molded plastic part.

[0015] Optionally, one end of the reflector protrudes from the L-shaped housing along the third direction and is formed as a mounting part. All four mounting parts are located at the end with the smaller cross-sectional area of ​​the light source reflection space along the third direction. The space enclosed by the four mounting parts is used to install the light source component.

[0016] Another objective of this invention is to provide a projector that includes a light source module as described in any of the above embodiments.

[0017] Beneficial effects:

[0018] The light source module of this invention consists of two L-shaped shells and four reflectors. Each L-shaped shell is integrally formed from a first light-shielding wall and a second light-shielding wall. The two L-shaped shells are connected end-to-end by the interconnection of the first light-shielding wall of one L-shaped shell and the second light-shielding wall of the other. Reflectors are attached to the inner walls of the first and second light-shielding walls, creating a light source reflection space within the two L-shaped shells. The cross-sectional area of ​​this reflection space gradually increases along the third direction, forming a funnel shape that focuses the light source, improving its brightness and uniformity. In assembly, the reflectors are first attached to the first and second light-shielding walls of the L-shaped shells, and then the two L-shaped shells are assembled to form the desired light-focusing funnel. The structure is simple and easy to assemble, improving production efficiency and resulting in higher quality and yield rates for the formed light-focusing funnels. Attached Figure Description

[0019] Figure 1 This is an isometric view of the light source module provided in a specific embodiment of this utility model;

[0020] Figure 2 This is an exploded view of the light source module provided in a specific embodiment of this utility model.

[0021] In the picture:

[0022] 10. L-shaped housing; 11. First light-shielding wall; 111. Fixing buckle; 112. Buckle hole; 113. Dovetail groove; 12. Second light-shielding wall; 121. Buckle protrusion; 122. Receiving groove; 123. Dovetail tenon; 20. Reflector; 21. Mounting part; 100. Light source reflection space. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0027] The first direction mentioned in this example is Figure 1 The X direction shown is the width direction of the L-shaped housing 10; the second direction is... Figure 1 The Y direction shown is the height direction and vertical direction of the L-shaped shell 10; the third direction is... Figure 1 The Z direction shown is the depth direction of the L-shaped shell 10; the X and Z directions are both horizontal directions perpendicular to the Y direction, and the X, Y and Z directions are mutually perpendicular.

[0028] like Figure 1 As shown, the light source module includes two L-shaped housings 10 and four reflectors 20. Each L-shaped housing 10 includes a first light-shielding wall 11 parallel to a first direction and a second light-shielding wall 12 parallel to a second direction. The first light-shielding wall 11 and the second light-shielding wall 12 are integrally formed. The first light-shielding wall 11 of each L-shaped housing 10 is connected to the second light-shielding wall 12 of the other L-shaped housing 10. The four reflectors 20 are correspondingly attached to the inner walls of the two first light-shielding walls 11 and the two second light-shielding walls 12. The four reflectors 20 form a light source reflection space 100. The cross-sectional area of ​​the light source reflection space 100 gradually increases along a third direction. The first direction, the second direction, and the third direction are all perpendicular to each other.

[0029] The light source module in this embodiment consists of two L-shaped housings 10 and four reflectors 20. Each L-shaped housing 10 is integrally formed from a first light-shielding wall 11 and a second light-shielding wall 12. The two L-shaped housings 10 are connected end to end by the mutual connection of the first light-shielding wall 11 of each L-shaped housing 10 and the second light-shielding wall 12 of the other L-shaped housing 10. Reflectors 20 are attached to the inner walls of the first light-shielding wall 11 and the second light-shielding wall 12, respectively. The interior of the two L-shaped housings 10 is enclosed by the reflectors 20 to form a light source reflection space 100. The cross-sectional area of ​​the light source reflection space 100 gradually increases along the third direction, so that the light source reflection space 100 can be formed into a funnel shape, thereby focusing the light source and improving the brightness and uniformity of the light source. When assembling the light source module, the reflector 20 is first attached to the first light-shielding wall 11 and the second light-shielding wall 12 of the L-shaped shell 10, and then the two L-shaped shells 10 are assembled to form the required light-focusing funnel of the light source module. The structure is simple and easy to assemble, which can improve production efficiency, and the formed light-focusing funnel has higher production quality and a higher yield.

[0030] Furthermore, one end of the first light-shielding wall 11 away from the second light-shielding wall 12 along the first direction and the other end of the second light-shielding wall 12 away from the first light-shielding wall 11 along the second direction are each provided with a fixing buckle 111, and the other is provided with a buckle protrusion 121 that engages with the fixing buckle 111. By engaging the fixing buckle 111 and the buckle protrusion 121, the first light-shielding wall 11 and the other second light-shielding wall 12 can be fixed together. The fixing method is reliable and easy to assemble, disassemble and maintain, which will not be described in detail here.

[0031] like Figure 2 As shown, the first light-shielding wall 11 is provided with the aforementioned fixing buckle 111, and the second light-shielding wall 12 has a receiving groove 122 at one end away from the first light-shielding wall 11 along the second direction. The fixing buckle 111 of the other L-shaped housing 10 is fitted into the receiving groove 122, and the inner wall of the receiving groove 122 is provided with the buckle protrusion 121. The receiving groove 122 can accommodate the fixing buckle 111, reduce the space occupied by the fixing buckle 111, and thus reduce the space occupied by the light source module, improving the internal space utilization rate of the light source module.

[0032] Furthermore, the aforementioned fixing buckle 111 is provided with multiple buckle holes 112, and the aforementioned receiving groove 122 is provided with multiple buckle protrusions 121, each of which is correspondingly fitted into the buckle hole 112. The interlocking of the multiple buckle holes 112 and the multiple buckle protrusions 121 can improve the fixing effect of the fixing buckle 111 and the buckle protrusions 121.

[0033] In this embodiment, one end of the first light-shielding wall 11 away from the second light-shielding wall 12 along the first direction and the other end of the second light-shielding wall 12 away from the first light-shielding wall 11 along the second direction are both provided with a dovetail tenon 123, and the other is provided with a dovetail groove 113 that engages with the dovetail tenon 123. The engagement of the dovetail groove 113 and the dovetail tenon 123 provides a fixing force along the first direction when the first light-shielding wall 11 and the second light-shielding wall 12 are connected, preventing the first light-shielding wall 11 and the second light-shielding wall 12 from falling off after being fixed, thus improving the fixing effect.

[0034] Specifically, multiple dovetail tenons 123 and dovetail grooves 113 are provided in a one-to-one correspondence. Similarly, multiple fixing buckles 111 and receiving grooves 122 are also provided in a one-to-one correspondence. This further improves the fixing effect after the first light-shielding wall 11 and the second light-shielding wall 12 are fixed.

[0035] Please continue to refer to this. Figure 2 A fixing buckle 111 is provided between any two adjacent dovetail grooves 113, and a receiving groove 122 is provided between any two adjacent dovetail tenons 123. This avoids the dovetail grooves 113 and dovetail tenons 123 obstructing the fixing buckle 111 when it is installed with the receiving groove 122, thus achieving an avoidance function and improving assembly efficiency.

[0036] In this embodiment, the L-shaped housing 10 is a one-piece injection-molded plastic part. The L-shaped housing 10 is one-piece injection-molded from plastic, which has the advantages of lightweight structure, high molding efficiency, low cost and simple molding method, which can improve production efficiency and reduce production costs.

[0037] Furthermore, the reflector 20 protrudes from the L-shaped housing 10 at one end along the third direction and is formed as a mounting portion 21. All four mounting portions 21 are located at the end with the smaller cross-sectional area of ​​the light source reflection space 100 along the third direction. The space enclosed by the four mounting portions 21 is used to mount the light source component. The mounting portion 21 protrudes from the L-shaped housing 10 and is formed as a mounting space protruding from the light source reflection space 100. The light source component is mounted within this mounting space, thereby enabling reliable fixation of the light source and improving the focusing effect, uniformity, and brightness of the light source.

[0038] This embodiment also provides a projector, which includes a light source module as described in any of the above embodiments. Specifically, the light source module used in this projector is assembled by first attaching the reflector 20 to the first light-shielding wall 11 and the second light-shielding wall 12 of the L-shaped housing 10, and then assembling the two L-shaped housings 10 to form the desired light-focusing funnel. This structure is simple and easy to assemble, improving production efficiency. Furthermore, the formed light-focusing funnel has higher production quality and a higher yield rate, thus improving the overall production quality of the projector.

[0039] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A light source module, characterized by include: Two L-shaped housings (10), each L-shaped housing (10) includes a first light-shielding wall (11) parallel to a first direction and a second light-shielding wall (12) parallel to a second direction, and the first light-shielding wall (11) and the second light-shielding wall (12) are integrally formed, and the first light-shielding wall (11) of each L-shaped housing (10) is connected to the second light-shielding wall (12) of the other L-shaped housing (10); Four reflectors (20) are attached to the inner walls of the two first light-shielding walls (11) and the two second light-shielding walls (12), respectively. The four reflectors (20) form a light source reflection space (100), and the cross-sectional area of ​​the light source reflection space (100) gradually increases along the third direction. The first direction, the second direction and the third direction are perpendicular to each other.

2. The light source module of claim 1, wherein The first light-shielding wall (11) is located away from the second light-shielding wall (12) along the first direction, and the second light-shielding wall (12) is located away from the first light-shielding wall (11) along the second direction. One of them is provided with a fixing buckle (111), and the other is provided with a buckle protrusion (121) that engages with the fixing buckle (111).

3. The light source module of claim 2, wherein the light source module is configured to be mounted on a printed circuit board (PCB) of a display device. The first light-shielding wall (11) is provided with the fixing buckle (111), and the second light-shielding wall (12) is provided with a receiving groove (122) at one end away from the first light-shielding wall (11) along the second direction. The fixing buckle (111) of the other L-shaped housing (10) is fitted into the receiving groove (122), and the inner wall of the receiving groove (122) is provided with the buckle protrusion (121).

4. The light source module of claim 3, wherein The fixing buckle (111) is provided with multiple buckle holes (112), and the receiving groove (122) is provided with multiple buckle protrusions (121), and the buckle protrusions (121) are correspondingly fitted into the buckle holes (112).

5. The light source module of claim 4, wherein the light source module is configured to be mounted on a printed circuit board (PCB) of a display device. The first light-shielding wall (11) is located away from the second light-shielding wall (12) along the first direction, and the second light-shielding wall (12) is located away from the first light-shielding wall (11) along the second direction. One of them is provided with a dovetail tenon (123), and the other is provided with a dovetail groove (113) that engages with the dovetail tenon (123).

6. The light source module of claim 5, wherein, Multiple dovetail tenons (123) and dovetail grooves (113) are provided in a one-to-one correspondence.

7. The light source module of claim 6, wherein the light source module is configured to be mounted on a printed circuit board (PCB) of a display device. A fixing buckle (111) is provided between any two adjacent dovetail grooves (113), and a receiving groove (122) is provided between any two adjacent dovetail tenons (123).

8. The light source module according to any one of claims 1-7, wherein, The L-shaped housing (10) is a one-piece injection molded plastic part.

9. The light source module according to any one of claims 1-7, wherein, The reflector (20) protrudes from the L-shaped housing (10) at one end along the third direction and is formed into a mounting part (21). All four mounting parts (21) are located at the end with the smaller cross-sectional area of ​​the light source reflection space (100) along the third direction. The space enclosed by the four mounting parts (21) is used to install the light source component.

10. A projector characterized by comprising: The light source module according to any one of claims 1 to 9 is included.

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