Cleaning assembly for interior of projector light machine
By using UV-curing adhesive and a support frame structure design, the problems of short lifespan and limited installation space of dust-catching adhesive in projector optical engines are solved, achieving efficient and long-lasting dust capture and cleaning effects, and improving the overall cleanliness of the optical engine and image quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-03-03
AI Technical Summary
Existing projector optical engine dust-collecting adhesive technology has a short lifespan, cannot effectively adsorb dust for a long time, and has limited installation locations, resulting in limited cleaning efficiency.
The UV-curable adhesive is rapidly cured under LED UV light of a specific wavelength to form a highly viscous surface. Combined with structural designs such as a support frame and fixing pins, the stability of the components and the ability to capture dust are ensured.
It achieves long-lasting dust capture capability, improves the cleanliness of the optical engine interior and image quality, extends service life, and adapts to different structural design requirements.
Smart Images
Figure CN223960237U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of projection equipment technology, specifically to a cleaning component for the internal optical engine of a projector. Background Technology
[0002] With the development of technology, projectors have become an indispensable part of meetings, education, and home entertainment. To ensure clear and flawless image quality, the cleanliness of the projector's internal components, especially its optical engine, is particularly important. Since the optical engine relies on fans for heat dissipation during operation, it is inevitable that dust from the outside air will be brought into the optical engine and deposited on the surface of critical light-emitting imaging devices, thus affecting the final projection effect.
[0003] While existing dust-collecting adhesives can adsorb dust inside the optical engine to some extent, they rely primarily on electrostatic adsorption. After prolonged use, the adhesive hardens and loses its stickiness, resulting in a significant decrease in dust-collecting ability. Furthermore, the installation locations of these traditional dust-collecting adhesives are limited, usually confined to specific areas, and cannot fully cover potential dust accumulation points inside the optical engine, thus limiting their overall cleaning efficiency. Therefore, developing a cleaning component that can maintain its stickiness for a long time and flexibly adapt to different structural design requirements is key to improving the cleanliness of the projector's optical engine. Utility Model Content
[0004] The purpose of this invention is to provide a cleaning component for the internal structure of a projector optical engine, in order to solve the problems mentioned in the background art, such as the short service life, inability to effectively adsorb dust for a long time, and limited cleaning efficiency due to limited installation space.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a cleaning component for the internal optical engine of a projector, including a chip bracket back cover. The chip bracket back cover has a support frame around its four perimeter. The chip bracket back cover has a rectangular rim inside its inner side. The rectangular rim is located within the support frame and has multiple rectangular adhesive application areas arranged inside it. A light source bracket is located at the bottom of the rectangular rim. The light source bracket also has a rectangular adhesive application area inside its inner side. UV-curable adhesive is applied to the adhesive application areas inside the rectangular rim and on the light source bracket using a dispensing device. The UV-curable adhesive is then rapidly cured by UV lamp irradiation to form a highly viscous surface.
[0006] Preferably, an air duct is provided on the outer side of the chip holder back cover, and the air duct forms an arch-shaped structure on the outer side of the chip holder back cover.
[0007] Preferably, both sides of the rectangular perimeter are provided with fixing pins, and the outer end of the fixing pin is provided with an expansion head.
[0008] Preferably, the inner end of the light source bracket is connected to the bottom part of the rectangular perimeter through a number of reinforcing ribs, and the reinforcing ribs gradually narrow from the light source bracket to the rectangular perimeter.
[0009] Preferably, the gaps between the glued areas inside the rectangular perimeter are provided with fixing buckles, and the fixing buckles are trapezoidal in shape.
[0010] Preferably, the support frame is made of aluminum alloy and has positioning holes at the four corners, and the support frame and the chip bracket back cover form an integral structure.
[0011] Compared with existing technologies, the beneficial effects of this invention are: the projector's internal optical engine cleaning component achieves rapid curing and excellent adhesion performance, effectively extending its service life, and can flexibly adapt to different structural features within the optical engine, providing a more comprehensive and efficient dust capture capability. Through the precise design of the chip bracket back cover and support frame, the projector's internal optical engine cleaning component ensures the stability and reliability of the overall structure. The adhesive areas on the inner side of the rectangular perimeter and on the light source bracket use UV-curable adhesive, which rapidly cures under UV light of a specific wavelength, forming a highly viscous surface and enhancing dust capture efficiency. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the internal cleaning component of a projector optical engine according to the present invention;
[0013] Figure 2 This is a schematic diagram of the inner structure of the chip bracket back cover and the light source bracket connection of the internal cleaning component of the projector optical engine according to the present invention.
[0014] Figure 3 This is a schematic diagram of the outer structure of the chip bracket back cover and the light source bracket connection of the internal cleaning component of the projector optical engine according to the present invention.
[0015] In the diagram: 1. Chip bracket back cover; 2. Support frame; 3. Rectangular edging; 4. UV curing adhesive; 5. Light source bracket; 6. Fixing pin; 7. Reinforcing rib; 8. Fixing buckle; 9. Air duct. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1-3This utility model provides a technical solution: a cleaning component for the internal optical engine of a projector, including a chip holder back cover 1, a support frame 2 around the four perimeter of the chip holder back cover 1, a rectangular rim 3 inside the chip holder back cover 1, the rectangular rim 3 being located within the support frame 2 and having multiple rectangular adhesive application areas arranged therein, a light source bracket 5 at the bottom of the rectangular rim 3, and a rectangular adhesive application area inside the light source bracket 5, the adhesive application area having a fine texture formed by laser engraving, and UV-curable adhesive 4 applied to the adhesive application areas inside the rectangular rim 3 and on the light source bracket 5 using a dispensing device, the UV-curable adhesive 4 containing a specific ratio of photoinitiator and tackifier, and the UV-curable adhesive 4 being rapidly cured by UV lamp irradiation. The UV lamp, using an LED light source with a wavelength precisely controlled between 365nm and 405nm, cures to form a highly viscous surface. The chip bracket back cover 1 is securely mounted inside the projector's optical engine via its surrounding support frame 2. The rectangular rim 3 fits tightly with the support frame 2, ensuring the overall structural robustness. UV-curable adhesive 4 is evenly applied to the inside of the rectangular rim 3 and the adhesive application area on the light source bracket 5 using a dispensing device. This adhesive contains a specific ratio of photoinitiator and tackifier, significantly improving adhesion. When irradiated with an LED UV lamp with a precisely controlled wavelength range of 365nm to 405nm, the UV-curable adhesive 4 cures rapidly, forming a highly viscous surface. This rapid curing characteristic allows for efficient curing of all components. The tight integration between the components enhances the stability and durability of the overall structure. Simultaneously, the light source bracket 5 seamlessly connects to the rectangular perimeter 3 via an adhesive-coated area at its bottom, further improving dust capture capabilities. The durable, highly viscous surface formed by the UV-cured adhesive 4 effectively captures and fixes dust particles, avoiding the loss of stickiness that occurs with traditional dust-collecting adhesives after prolonged use. Furthermore, this design not only improves the overall cleanliness of the equipment but also enhances image quality, overcoming the limitation of existing dust-collecting adhesives that cannot fully cover dust accumulation points inside the optical engine. It provides a more reliable and durable internal cleaning solution, significantly improving the user experience. An air duct 9 is located on the outer side of the chip bracket back cover 1. The side panels form an arched structure, which effectively guides airflow and reduces dust accumulation inside the optical engine by optimizing the airflow path. This not only increases airflow efficiency but also reduces temperature to some extent, preventing performance degradation due to overheating. Both sides of the rectangular perimeter 3 are equipped with fixing pins 6, and the outer ends of the fixing pins 6 have expansion heads. This structure provides a stable fixation during installation; when the fixing pin 6 is inserted into the corresponding mounting hole, the expansion head expands to ensure a tight connection between the pin and the mounting hole. This stable connection method prevents the entire cleaning assembly from shifting or loosening due to vibration or external impact during use, ensuring precise fit and stability between the components.The inner end of the light source bracket 5 is connected to the bottom end of the rectangular perimeter 3 via several reinforcing ribs 7. The reinforcing ribs 7 gradually narrow from the light source bracket 5 to the rectangular perimeter 3. This structure reduces material usage and optimizes overall weight distribution while ensuring strength. In practical applications, when the light source operates, the vibrations and stresses generated are transmitted to the rectangular perimeter 3 through the light source bracket 5. The reinforcing ribs 7 effectively disperse these forces, preventing structural deformation or damage caused by localized stress concentration. Furthermore, due to the gradually narrowing design of the reinforcing ribs 7, they not only provide sufficient support rigidity but also allow for a certain degree of elastic deformation, thereby absorbing and buffering external impacts and further enhancing the stability and durability of the system. Fixing clips 8 are provided between the glued areas inside the rectangular perimeter 3, and these clips 8 have a trapezoidal structure. This structure of the fixing clips 8 provides additional stability and positioning accuracy during installation and maintenance. After the curing adhesive 4 is applied to the adhesive-coated areas inside the rectangular perimeter 3 and on the light source bracket 5, the fixing clips 8, through their trapezoidal structure, effectively lock the gaps between the adhesive-coated areas, preventing displacement or deformation before the adhesive cures. The support frame 2 is made of aluminum alloy and has positioning holes at the four corners. The support frame 2 and the chip bracket back cover 1 form an integrated structure. During installation, the positioning holes at the four corners ensure that the support frame 2 can be accurately aligned with other components, providing a stable foundation. The aluminum alloy material gives the support frame 2 lightweight and high strength, while also possessing good corrosion resistance, which helps maintain structural stability and extend service life during long-term use. The integrated design of the support frame 2 and the chip bracket back cover 1 enhances the rigidity and vibration resistance of the overall structure, allowing the entire cleaning assembly to remain stable when facing external vibrations or impacts, reducing the risk of functional failure due to loosening.
[0018] Working principle: When using this projector optical engine internal cleaning component, the chip bracket back cover 1 is first securely installed inside the projector optical engine via its four peripheral support frames 2. Next, the rectangular perimeter 3 is located within the support frames 2, and multiple rectangular adhesive application areas are arranged within it. These adhesive application areas, similar to the rectangular adhesive application areas on the inner side of the light source bracket 5, are all uniformly coated with UV-curable adhesive 4 using a dispensing device. Then, when the LED's precise wavelength range is controlled between 365nm and 405nm... When irradiated by UV lamps, the UV curing adhesive 4 cures rapidly, forming a highly viscous surface that tightly bonds the components, enhancing the stability and durability of the overall structure. Simultaneously, the fixing pin 6 is inserted into the corresponding mounting hole, and its outer expansion head expands. Next, the light source bracket 5 is seamlessly connected to the rectangular perimeter 3 through the adhesive area at its bottom, maximizing dust capture capability. Furthermore, the inner end of the light source bracket 5 is connected to the bottom part of the rectangular perimeter 3 through several gradually narrowing reinforcing ribs 7. This design not only ensures strength but also optimizes the overall weight distribution. Finally, the outer side of the chip bracket back cover 1 has an arched air duct 9, which effectively guides airflow, reduces dust deposition inside the optical engine by optimizing the airflow path, and lowers the temperature to a certain extent, preventing performance degradation due to overheating, thus completing a series of tasks.
[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A projector light engine internal cleaning assembly comprising a chip carrier back cover (1), characterized in that: The four peripheral edges of the chip holder rear cover (1) are provided with a support frame (2), the inner side of the chip holder rear cover (1) is provided with a rectangular surrounding edge (3), the rectangular surrounding edge (3) is located in the support frame (2) and a plurality of rectangular structure glue applying areas are arranged inside the support frame (2), the bottom of the rectangular surrounding edge (3) is provided with a light source support (5), the inner side of the light source support (5) is also provided with a rectangular structure glue applying area, the glue applying areas on the rectangular surrounding edge (3) and the light source support (5) are all coated with UV curing glue (4) by a glue dispenser, and the UV curing glue (4) is quickly cured to form a surface with high adhesion by UV lamp irradiation.
2. A cleaning assembly for the interior of a projector light engine according to claim 1, wherein: The outer side of the chip holder rear cover (1) is provided with an air duct (9), and the air duct (9) forms an arched structure on the outer side of the chip holder rear cover (1).
3. The internal cleaning assembly for a projector light engine of claim 1, wherein: Both sides of the rectangular surrounding edge (3) are provided with fixed clamping pins (6), and the outer ends of the fixed clamping pins (6) are provided with expansion heads.
4. The internal cleaning assembly for a projector light engine of claim 1, wherein: The inner end of the light source support (5) is connected to the bottom end of the rectangular surrounding edge (3) through a plurality of reinforcing ribs (7), and the reinforcing ribs (7) gradually narrow from the light source support (5) to the rectangular surrounding edge (3).
5. The internal cleaning assembly for a projector light engine of claim 1, wherein: The gaps between the glue applying areas inside the rectangular surrounding edge (3) are provided with fixed buckles (8), and the fixed buckles (8) are in trapezoidal structure.
6. The internal cleaning assembly for a projector light engine of claim 1, wherein: The support frame (2) is made of aluminum alloy material and is provided with positioning holes at four corners, and the support frame (2) and the chip holder rear cover (1) form an integral structure.