Projection lamp assembly and household appliance

Abstract

The utility model relates to the technical field of household appliance display projection, and provides a projection lamp assembly which comprises a light-emitting display module and a control circuit board. The light-emitting display module comprises a light-emitting unit for generating a projection light source; the light-emitting unit and a first electrical component matched with the control circuit board are integrated on the same control circuit board; or the light-emitting unit is detachably and electrically connected with the control circuit board, and the light-emitting unit is independently detached or installed on the control circuit board. The light-emitting unit is independently detached or installed on the control circuit board, and the structural design provides convenience for subsequent function upgrading and maintenance; besides, when the light-emitting unit is damaged, the light-emitting unit can be independently detached from the control circuit board, a new light-emitting unit can be installed on the control circuit board, and the whole control circuit board does not need to be detached, maintained and replaced.

Description

Technical Field

[0001] This utility model relates to the technical field of display projection in home appliances, specifically to a projection lamp assembly and a home appliance. Background Technology

[0002] With the rapid development of IoT and AI technologies, modern home appliances are undergoing a profound transformation from single-function devices to intelligent, interactive systems. While traditional home appliances (such as built-in dishwashers, side-by-side refrigerators, and microwave ovens) are constantly being optimized in terms of functionality and performance, their human-computer interaction interfaces face significant technical bottlenecks, which severely restrict the improvement of user experience. Specifically, this manifests in the following aspects:

[0003] Firstly, because built-in appliances (such as dishwashers, ovens, and steam ovens) are designed to be integrated with cabinets, their control panels are often partially or completely obscured by the cabinet structure. This design prevents users from intuitively viewing the device's operating status (such as washing progress, temperature setting, and operating mode) during operation. Users must adopt uncomfortable postures such as bending over or squatting to view the display information, which can easily lead to physical fatigue over time. This interaction method is particularly inconvenient for elderly users.

[0004] Secondly, existing home appliance display systems suffer from significant environmental adaptability deficiencies. Most devices use top- or side-mounted LCD / LED displays, which, under the strong ambient light conditions common in kitchens (such as direct sunlight or overhead lighting), exhibit severe glare and insufficient brightness, leading to a sharp decline in visibility. Furthermore, some devices with touchscreen designs may malfunction when the user's hands are wet or oily.

[0005] Furthermore, current home appliances present information in a simplistic and unscalable manner. Traditional displays can only be fixed to a specific location on the device's surface, making it impossible to flexibly adjust the projection position and content of information according to user scenarios. For example, when multiple people are using the kitchen simultaneously, users of different heights may need to view information from different angles; or during cooking, users may need to obtain different levels of functional parameters in real time.

[0006] Finally, maintaining and upgrading existing display modules presents challenges. Most home appliances integrate their display systems with the control motherboard, meaning that when a display malfunction occurs or a functional upgrade is needed, the entire control module often requires replacement. This not only increases repair costs but also wastes resources. Furthermore, this integrated design limits manufacturers' ability to flexibly configure display functions according to the needs of different product lines. Utility Model Content

[0007] This utility model proposes a projection lamp assembly and a household appliance, in which the light-emitting unit can be detached or installed separately on the control circuit board. This structural design provides convenience for subsequent functional upgrades and maintenance. In addition, when the light-emitting unit is damaged, it can be detached separately from the control circuit board and a new light-emitting unit can be installed on the control circuit board to replace it, without having to disassemble, repair or replace the entire control circuit board.

[0008] A projection lamp assembly designed for this purpose includes a light-emitting display module and a control circuit board;

[0009] The light-emitting display module includes a light-emitting unit for generating a projected light source;

[0010] The light-emitting unit and the first electrical component that is matched with the control circuit board are integrated on the same control circuit board; or, the light-emitting unit and the control circuit board are detachably electrically connected, and the light-emitting unit can be detached or installed separately on the control circuit board.

[0011] The light-emitting display module also includes a display unit for displaying corresponding images;

[0012] The display unit and the second electrical accessory that is matched with the control circuit board are integrated on the same control circuit board; or, the display unit and the control circuit board are detachably electrically connected, and the display unit can be detached or installed separately on the control circuit board.

[0013] The light-emitting display module includes a light-emitting unit and a display unit. The light-emitting unit and the display unit are arranged at intervals on the control circuit board along the direction of light propagation. A light-concentrating transmission unit is provided between the light-emitting unit and the display unit to focus the light from the light-emitting unit and project it onto the display unit.

[0014] The light-emitting units and the display units are arranged at intervals along the length of the control circuit board, with the control circuit board located above or below the light-emitting units and the display units.

[0015] The projection lamp assembly also includes an imaging lens group corresponding to the display output terminal of the display unit. The imaging lens group and the display unit are arranged at intervals on the projection lamp assembly along the light propagation direction. The imaging lens group is used to project the pattern presented by the display unit onto the target projection surface.

[0016] The projection lamp assembly further includes a projection housing for accommodating and mounting the light-emitting display module and the control circuit board. The projection housing is provided with a corresponding first positioning mounting part for the light-emitting display module and / or the control circuit board, and the light-emitting display module and / or the control circuit board are mounted on the projection housing through the corresponding first positioning mounting part.

[0017] The projection housing is provided with a second positioning and mounting part for positioning and mounting the light-concentrating transmission unit and / or imaging lens group.

[0018] The projection housing is provided with a display output section and a projection output section. The display output section is correspondingly set with the display output terminal of the display unit; the projection output section is correspondingly set with the projection output terminal of the projection lamp assembly.

[0019] The light-emitting unit is a light panel, a light bead, or a light strip.

[0020] A household appliance designed for this purpose includes a main body of the household appliance, on which the aforementioned projection lamp assembly is provided;

[0021] The projection lamp assembly is located on the inside or outside of the main body of the household appliance;

[0022] The main household appliance is a dishwasher, refrigerator, disinfection cabinet, washing machine, microwave oven, or electric oven.

[0023] The projection output end of the projection lamp assembly faces the ground, wall, or corresponding household appliance accessories.

[0024] The beneficial technical effects of this utility model are as follows:

[0025] The light-emitting unit can be individually removed or installed on the control circuit board, a design that facilitates subsequent functional upgrades and maintenance. Furthermore, when the light-emitting unit is damaged, it can be removed from the control circuit board and a new unit installed on the control circuit board, eliminating the need to disassemble and replace the entire control circuit board for repair.

[0026] The projection output of the described projection lamp assembly faces the ground, wall, or corresponding household appliance accessories. Projecting onto easily observable locations such as the ground or wall effectively solves the problem of users finding it difficult to view the operating status of household appliances due to panel obstruction caused by embedded devices. This design retains traditional display functions while expanding the dimensions of information presentation through projection, significantly improving the convenience for users to obtain the operating status of household appliances. Attached Figure Description

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] Figure 1 This is a three-dimensional structural diagram of a projection lamp assembly according to an embodiment of the present invention.

[0029] Figure 2 This is an exploded view of the assembly structure of a projection lamp assembly according to an embodiment of the present invention.

[0030] Figure 3 This is a three-dimensional structural diagram of the control circuit board according to an embodiment of the present invention.

[0031] Figure 4This is a three-dimensional structural diagram of the light-emitting unit according to an embodiment of the present invention.

[0032] Figure 5 This is a three-dimensional structural diagram of a display unit according to an embodiment of the present invention.

[0033] Figure 6 This is a three-dimensional structural diagram of the internal state of the projection housing of a projection lamp assembly according to an embodiment of the present invention.

[0034] Figure 7 This is a three-dimensional structural diagram of the light-emitting display module and control circuit board disassembled from the projection housing according to an embodiment of the present invention.

[0035] Figure 8 This is a three-dimensional cross-sectional structural diagram of a projection lamp assembly according to an embodiment of the present invention.

[0036] Figure 9 This is a schematic diagram of the internal structure of the projection shell according to an embodiment of the present invention.

[0037] Figure 10 This is a three-dimensional structural diagram of a household appliance according to an embodiment of the present invention.

[0038] Figure 11 for Figure 10 A magnified view of a portion of the square area. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In order to make the above-mentioned objects, features and advantages of the present application more apparent and understandable, many specific details are set forth in the following description in order to provide a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0040] See Figures 1-9 A projection lamp assembly includes a light-emitting display module 1 and a control circuit board 2;

[0041] The light-emitting display module 1 includes a light-emitting unit 3 for generating a projected light source;

[0042] The first electrical component of the light-emitting unit 3 and the control circuit board 2 are integrated on the same control circuit board 2; or, the light-emitting unit 3 and the control circuit board 2 are detachably electrically connected, and the light-emitting unit 3 can be detached or installed separately on the control circuit board 2.

[0043] In this embodiment, it is preferable that the light-emitting unit 3 is individually detached or installed on the control circuit board 2. This structural design facilitates subsequent functional upgrades and maintenance. In addition, when the light-emitting unit 3 is damaged, it can be detached from the control circuit board 2 and a new light-emitting unit 3 can be installed on the control circuit board 2 to replace it, without having to disassemble, repair or replace the entire control circuit board 2.

[0044] In this embodiment, the control circuit board 2 is provided with a plug-in port, and the light-emitting unit 3 is provided with a plug-in pin. The light-emitting unit 3 is inserted into or pulled out of the plug-in port through the plug-in pin to realize a detachable electrical connection between the light-emitting unit 3 and the control circuit board 2.

[0045] The light-emitting display module 1 also includes a display unit 4 for displaying corresponding images;

[0046] The display unit 4 and the second electrical accessory that is matched with the control circuit board 2 are integrated on the same control circuit board 2; or, the display unit 4 and the control circuit board 2 are detachably electrically connected, and the display unit 4 can be detached or installed separately on the control circuit board 2.

[0047] Display unit 4 can generate high-definition images containing composite visual elements such as icons, progress bars, and text, making the display of device status information more intuitive and diverse. Users can clearly grasp the working status through the projected image without having to observe the device closely, making it particularly suitable for use in multi-tasking scenarios in the kitchen. The design of display unit 4, which can be detached or installed on control circuit board 2, also allows for flexible configuration of display precision according to product positioning, meeting different needs from basic to high-end models, and providing convenience for subsequent function upgrades and maintenance.

[0048] When the display unit 4 is damaged, the display unit 4 can be removed separately from the control circuit board 2, and a new display unit 4 can be installed on the control circuit board 2 to replace it. It is not necessary to disassemble, repair or replace the entire control circuit board 2.

[0049] Display unit 4 can be configured as a transmissive LCD screen, an LCoS (liquid crystal coated with silicon) micro-display panel, a DLP (digital light processing) micro-projection module, an OLED micro-display, a Micro LED micro-display array, an electronic ink screen (E-paper), a laser MEMS scanning display system, a silicon-based liquid crystal (HTPS) panel, a digital micromirror device (DMD), or a quantum dot enhanced display panel, etc.

[0050] In this embodiment, the display unit 4 is preferably a liquid crystal projection screen.

[0051] The light-emitting display module 1 includes a light-emitting unit 3 and a display unit 4. The light-emitting unit 3 and the display unit 4 are arranged at intervals on the control circuit board 2 along the light propagation direction. A light-concentrating transmission unit 5 is provided between the light-emitting unit 3 and the display unit 4 to focus the light from the light-emitting unit 3 and project it onto the display unit 4.

[0052] In this embodiment, the control circuit board 2 is provided with a plug-in port, and the display unit 4 is provided with plug-in pins. The display unit 41 is inserted into or pulled out of the plug-in port through the plug-in pins to realize a detachable electrical connection between the display unit 4 and the control circuit board 2.

[0053] The light from the light-emitting unit 3 is precisely focused onto the display unit 4 by the light-concentrating transmission unit 5, achieving high-brightness and high-contrast image generation. This spaced arrangement along the direction of light propagation optimizes the optical path, effectively reduces light energy loss, and ensures clear visibility of the projected image even in a bright kitchen environment. Simultaneously, the compact layout allows the entire projection lamp assembly to adapt to the installation space limitations of various home appliances, making it particularly suitable for use in space-constrained devices such as built-in dishwashers.

[0054] In this embodiment, the light-concentrating transmission unit 5 is a convex lens. A convex lens has the characteristic of converging light, enabling it to focus the diverging light beam emitted by the light-emitting unit 3 onto the display unit 4, improving light energy utilization and ensuring the brightness of the projected image. In the projection optical path, the light-emitting unit 3 is typically a point light source such as an LED or laser, whose light diffuses radially. The convex lens can correct the optical path, concentrating the light onto the display unit 4, reducing stray light, and improving image quality. Further optimization is needed; an aspherical convex lens can be used to reduce aberrations, or a combination of lenses (such as a Fresnel lens) can be used to reduce size.

[0055] The light-emitting unit 3 and the display unit 4 are arranged at intervals along the length of the control circuit board 2, with the control circuit board 2 located above or below the light-emitting unit 3 and the display unit 4.

[0056] In this embodiment, the control circuit board 2 is positioned above or below the light-emitting unit 3 and the display unit 4. The control circuit board 2 is horizontally aligned with the direction of light propagation. The unique arrangement of the light-emitting unit 3 and the display unit 4 along the length of the control circuit board 2 maximizes the use of installation space, allowing the projection lamp assembly to adapt to the structural characteristics of different home appliances. The selectable vertical position of the control circuit board 2 provides installation flexibility, allowing for the selection of the optimal layout based on the internal structure of the specific product. This standardized arrangement not only simplifies the manufacturing process but also ensures precise alignment between optical components, guaranteeing a distortion-free and dark-corner-free projected image, achieving optimal projection effects at various installation angles.

[0057] The projection lamp assembly also includes an imaging lens group 6 corresponding to the display output terminal of the display unit 4. The imaging lens group 6 and the display unit 4 are arranged at intervals on the projection lamp assembly along the light propagation direction. The imaging lens group 6 is used to project the pattern presented by the display unit 4 onto the target projection surface.

[0058] The design of the imaging lens group 6 significantly improves the quality and adaptability of the projected image. Through precise optical design, the image generated by the display unit 4 can be accurately magnified and projected onto the target surface (such as the ground or wall), forming a large display area that is easy to observe. This design allows users to clearly read information at different distances and angles, solving the problem of limited viewing angles in traditional fixed displays. The imaging lens group 6 can also adjust its focal length according to the projection distance, ensuring a clear projection effect at different installation heights.

[0059] In this embodiment, the imaging lens group 6 consists of two imaging lenses arranged at an interval.

[0060] The projection lamp assembly also includes a projection housing 7 for accommodating and mounting the light-emitting display module 1 and the control circuit board 2. The projection housing 7 is provided with a corresponding first positioning mounting part for the light-emitting display module 1 and / or the control circuit board 2. The light-emitting display module 1 and / or the control circuit board 2 are mounted on the projection housing 7 through the corresponding first positioning mounting part.

[0061] In this embodiment, the projection housing 7 provides a stable installation environment for the entire optical system. Precise positioning by the first positioning mounting part ensures that the light-emitting display module 1 and the control circuit board 2 maintain accurate relative positions, preventing optical path misalignment due to vibration or temperature changes. The projection housing 7 also effectively blocks oil fumes and moisture from the kitchen environment from contaminating the optical components, extending the component's lifespan. The modular installation method also significantly simplifies the production assembly process and improves product consistency.

[0062] In this embodiment, the projection housing 7 includes an upper housing 11 and a lower housing 12, which are detachably connected by snap-fit ​​or similar means. The lower housing 12 is provided with a first slot 13 for positioning and installing the light-emitting unit 3. There is an installation gap between the two sides of the light-emitting unit 3 and the first slot 13, and the bottom of the light-emitting unit 3 is positioned on the inner bottom wall of the first slot 13.

[0063] In this embodiment, the lower housing 12 is provided with a second slot 14 corresponding to the display unit 4, and the display unit 4 is inserted into the second slot 14 on both sides.

[0064] In this embodiment, the top opening of the lower housing 12 is provided with a limiting step, and the control circuit board 2 is horizontally limited and installed on the limiting step. The upper housing 11 covers the lower housing 12, and the control circuit board 2 is limited between the upper housing 11 and the lower housing 12.

[0065] The projection housing 7 is provided with a second positioning and mounting part for positioning and mounting the light-concentrating transmission unit 5 and / or the imaging lens group 6.

[0066] In this embodiment, the second positioning and mounting part is a third slot 15 for inserting the light-concentrating transmission unit 5 and a fourth slot 16 for inserting the imaging lens group 6.

[0067] The second positioning and mounting section provides a professional-grade fixing solution for the light-concentrating and transmission unit 5 and the imaging lens group 6, ensuring that the optical components are always in the optimal working position. This design eliminates the optical axis misalignment problem that may occur during traditional assembly processes, guaranteeing the accuracy of the entire optical path from the light source to the final projected image. At the same time, the standardized positioning structure also facilitates fast and accurate assembly on the production line, improving production efficiency and reducing the defect rate.

[0068] The projection housing 7 is provided with a display output section 8 and a projection output section 9. The display output section 8 is correspondingly arranged with the display output terminal of the display unit 4; the projection output section 9 is correspondingly arranged with the projection output terminal of the projection lamp assembly.

[0069] In this embodiment, both the display output unit 8 and the projection output unit 9 are designed with open openings.

[0070] The light-emitting unit 3 is a light panel, a light bead, or a light strip.

[0071] The diverse range of light-emitting unit options provides flexible design options for home appliances at different price points. Light panels offer uniform surface light sources, suitable for scenarios requiring large-area illumination; LED chip solutions offer higher brightness and lower power consumption; and LED strip designs facilitate installation in narrow spaces. This configurability allows manufacturers to select the most suitable light source solution based on product positioning and cost requirements, while maintaining consistency in the overall projection system architecture, significantly expanding the applicability of the design solutions.

[0072] See Figures 10-11 A household appliance includes a main body 10, on which the aforementioned projection lamp assembly is provided;

[0073] The projection lamp assembly is located on the inside or outside of the main body 10 of the household appliance;

[0074] The main body of the household appliance 10 is a dishwasher, refrigerator, disinfection cabinet, washing machine, microwave oven, or electric oven.

[0075] The projection output end of the projection lamp assembly faces the ground, wall, or corresponding household appliance accessories.

[0076] The projection output of the described projection lamp assembly faces the ground, wall, or corresponding household appliance accessories. Projecting onto easily observable locations such as the ground or wall effectively solves the problem of users finding it difficult to view the operating status of household appliances due to panel obstruction caused by embedded devices. This design retains traditional display functions while expanding the dimensions of information presentation through projection, significantly improving the convenience for users to obtain the operating status of household appliances.

[0077] Integrating projection light components into various home appliances has revolutionized the human-computer interaction experience. In dishwashers, the washing progress can be projected onto the floor in front; in refrigerators, internal temperature and food preservation status can be displayed; and in ovens, baking progress and temperature curves can be intuitively presented. This solution breaks through the spatial limitations of traditional displays, freeing information presentation from the constraints of device installation location and viewing angle. Especially for embedded appliances, users can obtain device status without changing their posture, significantly improving user comfort and operational efficiency.

[0078] In this embodiment, the projection lamp assembly has a cable outlet on its side, which is connected to the main control circuit board of the household appliance via a wire.

[0079] In this embodiment, the projection housing 7 is fixed to the main body 10 of the household appliance by screws or clips.

[0080] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A projection lamp assembly, characterized by: The projection lamp assembly comprises a light-emitting display module (1) and a control circuit board (2); The light-emitting display module (1) comprises a light-emitting unit (3) for generating a projection light source; The light-emitting unit (3) and the first electrical component matched with the control circuit board (2) are integrally arranged on the same control circuit board (2); or the light-emitting unit (3) is in detachable electrical connection with the control circuit board (2), and the light-emitting unit (3) is separately detached or mounted on the control circuit board (2).

2. The projection lamp assembly of claim 1, wherein: The light-emitting display module (1) further comprises a display unit (4) for displaying a corresponding image; The display unit (4) and the second electrical component matched with the control circuit board (2) are integrally arranged on the same control circuit board (2); or the display unit (4) is in detachable electrical connection with the control circuit board (2), and the display unit (4) is separately detached or mounted on the control circuit board (2).

3. The projection lamp assembly of claim 1, wherein: The light-emitting display module (1) comprises the light-emitting unit (3) and the display unit (4), and the light-emitting unit (3) and the display unit (4) are arranged in a spaced manner along the light propagation direction on the control circuit board (2), and a light condensing and transmitting unit (5) is arranged between the light-emitting unit (3) and the display unit (4) for focusing the light of the light-emitting unit (3) and projecting it onto the display unit (4).

4. The projection lamp assembly of claim 3, wherein: The light-emitting unit (3) and the display unit (4) are arranged in a spaced manner along the length direction of the control circuit board (2), and the control circuit board (2) is located above or below the light-emitting unit (3) and the display unit (4).

5. The projection lamp assembly of claim 3, wherein: Further comprising an imaging lens group (6) arranged corresponding to the display output end of the display unit (4), the imaging lens group (6) and the display unit (4) are arranged in a spaced manner along the light propagation direction on the projection lamp assembly, and the imaging lens group (6) is used for projecting the pattern presented by the display unit (4) to a target projection surface.

6. The projection lamp assembly of claim 5, wherein: Further comprising a projection housing (7) for accommodating the installation of the light-emitting display module (1) and the control circuit board (2), the projection housing (7) is provided with a corresponding first positioning and mounting part corresponding to the light-emitting display module (1) and / or the control circuit board (2), and the light-emitting display module (1) and / or the control circuit board (2) is mounted on the projection housing (7) through the corresponding first positioning and mounting part.

7. The projection lamp assembly of claim 6, wherein: The projection housing (7) is provided with a second positioning and mounting part for positioning and mounting the light condensing and transmitting unit (5) and / or the imaging lens group (6).

8. The projection lamp assembly of claim 6, wherein: The projection housing (7) is provided with a display output part (8) and a projection output part (9), the display output part (8) is arranged corresponding to the display output end of the display unit (4); the projection output part (9) is arranged corresponding to the projection output end of the projection lamp assembly.

9. The projection lamp assembly of claim 1, wherein: The light-emitting unit (3) is a light panel, a lamp bead or a lamp strip.

10. A household appliance comprising a household appliance body (10), characterized by: The household appliance body (10) is provided with the projection lamp assembly according to any one of claims 1-9; The projection lamp assembly is arranged on the inside or outside of the household appliance body (10); The household appliance body (10) is a dishwasher, a refrigerator, a disinfection cabinet, a washing machine, a microwave oven or an electric oven; The projection output end of the projection lamp assembly faces the ground or the wall or the corresponding household appliance accessory.

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