Projection lamp with adjustable imaging effect

Abstract

The utility model provides a projection lamp with an adjustable imaging effect, which comprises a lamp box, a light source module, a light source module and a light source module, the projection lamp device sequentially comprises a light source, a dimming part, a display part and a projection part, the light source, the dimming part and the display part are adaptively mounted in the mounting cavity, and the projection part is adjustably mounted on the projection opening. Specifically, the internal structure of the projection lamp device is simplified, the projection lamp device is composed of light sources, a plano-convex lens, a display screen and a biconvex lens, the plano-convex lens is used for converging light sources in all directions into parallel light to penetrate through the plano-convex lens, and the distance between the biconvex lens and the display screen can be adjusted through threads. Therefore, imaging focusing and imaging magnification times are adjusted, and the method is suitable for various family layouts. And the position of the projection lamp device is fixed through the supporting seat, so that the imaging effect is prevented from being influenced by displacement during transportation, installation or use.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a projection lamp with adjustable imaging effect. Background Technology

[0002] Large household appliances such as dishwashers, washing machines, and ovens are equipped with control panels for operating and displaying the machine's status. However, because these appliances operate for extended periods, users need to get close to the appliance to see the information displayed on the control panel when they need to know the specific working status or remaining time. This is especially inconvenient for appliances installed in cabinets or stovetops, requiring users to bend down to observe them. Therefore, a projector can be used to display the information on the control panel, projecting it onto a wall or floor for easy viewing from a distance. However, since installation locations vary from household to household, projection distances and heights differ, and most projectors on the market are fixed and cannot be adjusted, the projected image may be blurry, too small, or difficult to view. Therefore, a modification is needed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a projection lamp with adjustable imaging effects.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A projection lamp with adjustable imaging effect, comprising:

[0006] A light box, wherein the light box has a mounting cavity and a projection port communicating with the mounting cavity;

[0007] A projection lamp device, comprising a light source, a dimming unit, a display unit, and a projection unit, wherein the light source, dimming unit, and display unit are adapted to be installed in the mounting cavity, and the projection unit is adjustablely installed on the projection port;

[0008] The electronic control board, the light source and the display are respectively electrically connected to the electronic control board.

[0009] Furthermore, the projection port is provided with an internal thread, and the projection part is provided with an external thread. The projection part can be adjusted and installed on the projection port through the thread.

[0010] Furthermore, the lamp box is provided with a support base, and the inner walls of the support base on opposite sides are symmetrically provided with limiting ribs, so that the support base forms an adjacent first mounting cavity and a second mounting cavity; the dimming part is adapted to be installed in the first mounting cavity, and the display part is adapted to be installed in the second mounting cavity.

[0011] Furthermore, the support base has a third mounting cavity communicating with the first mounting cavity on the outside of the first mounting cavity, and a plano-convex lens is provided on one side of the dimming part. The dimming part is adapted to be installed in the first mounting cavity and the plano-convex lens is adapted to be located in the third mounting cavity.

[0012] Furthermore, the third mounting cavity is provided with a light inlet, and the outer wall of the support base opposite to the light inlet is provided with a light outlet, and the light inlet and the light outlet are coaxially arranged.

[0013] Furthermore, a sleeve for fixing the light source is provided on the outside of the light inlet, and one end of the light source passes through the sleeve and is close to the convex surface of the plano-convex lens.

[0014] Furthermore, the projection unit includes a housing and a biconvex lens. The biconvex lens is adapted and fixed inside the housing. The external thread is located on the outer wall of one end of the housing. The distance between the biconvex lens and the display unit is adjusted by adjusting the thread.

[0015] Furthermore, the projection part can be adjusted via a thread to increase the distance between it and the display part by 1mm-4mm.

[0016] Furthermore, the ratio between the projection image distance, focal length, and object distance of the lamp box is 14:1:1.

[0017] Furthermore, the light box includes an upper cover and a lower cover, which are installed by snap-fitting.

[0018] This invention offers the following advantages: Based on existing projection lamps, the internal structure has been modified and an adjustable feature has been added, allowing users to adjust the image size according to their home layout. Specifically, the internal structure of the projection lamp device has been simplified, consisting of a light source, a plano-convex lens, a display screen, and a biconvex lens. The plano-convex lens focuses light from various directions into parallel beams, while the biconvex lens allows for adjustment of its distance from the display screen via threads, thereby adjusting the image focus and magnification. This makes it suitable for various home layouts. Furthermore, the projection lamp device is fixed in position by a support base, preventing displacement during transportation, installation, or use that could affect the imaging effect. Attached Figure Description

[0019] Figure 1 This is a perspective view of the overall structure of an embodiment of the present utility model.

[0020] Figure 2 This is an embodiment of the present utility model. Figure 1 AA cross-section view.

[0021] Figure 3 This is a light projection diagram of the lamp box according to an embodiment of the present utility model.

[0022] Figure 4 This is a diagram showing the installation position of the support base and projection lamp device according to an embodiment of the present utility model.

[0023] Figure 5 This is a structural diagram of the support base according to an embodiment of the present utility model.

[0024] Figure 6 This is an exploded view of the lamp box according to an embodiment of the present utility model.

[0025] Figure 7 This is a perspective view of the projection section housing according to an embodiment of the present utility model.

[0026] The attached figures are labeled as follows: Lamp box 1, upper cover 101, lower cover 102, snap-fit ​​groove 103, snap-fit ​​block 104, positioning post 105, mounting cavity 11, projection port 12, internal thread 121, support base 13, light inlet 131, light outlet 132, sleeve 133, limiting rib 14, first mounting cavity 15, second mounting cavity 16, third mounting cavity 161;

[0027] Projection lamp device 2, light source 21, dimming unit 22, plano-convex lens 221, convex rib 222, display unit 23, projection unit 24, external thread 241, housing 242, biconvex lens 243, anti-collision rib 244;

[0028] Electrical control board 3, positioning hole 31. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0032] like Figures 1-7 As shown, a projection lamp with adjustable imaging effect is used in household appliances, specifically, it is generally installed on the door panel of household appliances, and is particularly used in household dishwashers, including:

[0033] like Figure 1 , Figure 6 As shown, the light box 1 includes an upper cover 101 and a lower cover 102, which are installed together by snap-fit. Specifically, the upper cover 101 has several snap-fit ​​grooves 103 on its outer periphery, and the corresponding lower cover 102 has matching snap-fit ​​blocks 104. The two are installed and fixed together, so that the upper cover 101 and the lower cover 102 are interlocked. Furthermore, the upper cover 101 and the lower cover 102 are further fixed by screws. A power cord groove 106 is provided on one side of the light box 1 for connecting to the power supply of household appliances.

[0034] The lamp box 1 is provided with an installation cavity 11 and a projection port 12 communicating with the installation cavity 11. The projection port 12 is located on one side of the lamp box 1.

[0035] like Figure 2 , Figure 3 As shown, the projection lamp device 2 is installed in the mounting cavity 11. The projection lamp device 2 includes, in sequence, a light source 21, a dimming unit 22, a display unit 23, and a projection unit 24. The light source 21, the dimming unit 22, and the display unit 23 are adapted to be installed in the mounting cavity 11, and the projection unit 24 is adjustablely installed on the projection port 12.

[0036] like Figure 2 , Figure 4 As shown, the electronic control board 3 is installed inside the mounting cavity 11. Specifically, the lower cover 102 is provided with several positioning posts 105, and the electronic control board 3 is provided with positioning holes 31 through which the positioning posts 105 pass. The electronic control board 3 is positioned and installed inside the mounting cavity 11 through the cooperation of the positioning holes 31 and the positioning posts 105. The light source 21 and the display unit 23 are electrically connected to the electronic control board 3.

[0037] Specifically, such as Figure 2 , Figure 3As shown, the light source 21 can be an LED lamp, used to emit light towards the projection port 12. The display unit 23 is a light-transmitting display screen used to display information such as the current operating status of the electrical appliance.

[0038] like Figures 2-4 As shown, a plano-convex lens 221 is provided on one side of the dimming unit 22, with its convex surface facing the light source 21. When the light source 21 emits light, the light radiates outward from the center. When the installation of the light source 21 is tilted, the light projection will be deflected, affecting the projection effect. The plano-convex lens 221 can collect the light emitted by the light source 21 and convert the light from all directions into parallel light, so that the light can pass through the display unit 23 in parallel and be projected outward.

[0039] Furthermore, such as Figure 2 , Figure 6 As shown, in order to adapt to various usage scenarios and facilitate users to adjust the image size of the projection according to their needs, the projection part 24 is adjustablely mounted on the projection port 12. Specifically, the projection port 12 is provided with an internal thread 121, and the projection part 24 is provided with an external thread 241 that adapts to it. The projection part 24 is adjusted to be mounted on the projection port 12 by moving forward or backward through the thread.

[0040] like Figure 3 As shown, the details are as follows:

[0041] Scenario 1: When the location of the household appliance is fixed, the imaging distance between the household appliance and the projection surface and the focal length f between the projection unit 24 and the focal point are fixed. The user can adjust the image focus by adjusting the object distance v between the display unit 23 and the projection unit 24 to make the projection clearer.

[0042] Scenario 2: When the installation position of the household appliance is movable, the object distance u between the projection part 24 and the display part 23 can be adjusted forward or backward, thereby adjusting the image distance v. When the object distance u increases, the image distance v also increases accordingly according to its magnification factor, thereby achieving the effect of adjusting the image size and magnifying the image.

[0043] Furthermore, such as Figure 2 The projection unit 24 includes a housing 242 with front and rear openings and a biconvex lens 243, the biconvex lens 243 being adapted and fixed at its openings. An external thread 241 is located on the outer wall of one end of the housing 242, allowing the projection unit 24 to be adjusted and mounted on the lamp box 1 via the thread. The other end of the housing 242 is provided with anti-collision ribs 244, which are evenly distributed on the outer wall of the housing 242, with one end extending upwards from the upper edge of the housing 242, to protect the biconvex lens 243 from damage or scratches caused by external objects.

[0044] Furthermore, when the projection part 24 is screwed tightly to the lamp box 1 by threads, the distance between the projection part 24 and the display part 23 can be increased by 1mm-4mm by rotating the projection part 24 by threads.

[0045] Furthermore, the ratio between the projected image distance, focal length, and object distance of the lamp box 1 is 14:1:1. Its image can be magnified up to 11 times its initial size.

[0046] Furthermore, such as Figure 4 , Figure 5 As shown, to fix the projection lamp device 2, the lamp box 1 is provided with a support base 13 fixedly mounted on the electronic control board 3. The inner walls of the support base 13 on opposite sides are symmetrically provided with limiting ribs 14, forming an adjacent first mounting cavity 15 and a second mounting cavity 16 within the support base 13. The dimming part 22 is adapted to be installed in the first mounting cavity 15, and the display part 23 is adapted to be installed in the second mounting cavity 16. Specifically, a plano-convex lens 221 is provided on one side of the dimming part 22, and ribs 222 are provided at both ends of the dimming part 22 facing the plano-convex lens 221. The front side of the ribs 222 abuts against the inner wall of the first mounting cavity 15 to fix the dimming part 22, ensuring that it does not shift when installed in the first mounting cavity 15.

[0047] Furthermore, the support base 13 is provided with a third mounting cavity 161 on the outside of the first mounting cavity 15, which communicates with it. The third mounting cavity 161 corresponds to the position of the plano-convex lens 221, so that the plano-convex lens 221 is adapted to be installed in the third mounting cavity 161.

[0048] Furthermore, to allow light to pass through the dimming unit 22 and the display unit 23, the third mounting cavity 161 is provided with a light inlet 131, and the outer wall of the support base 13 on the side opposite to the light inlet 131 is provided with a light outlet 132. The light inlet 131 and the light outlet 132 are coaxially arranged. Specifically, to concentrate the light source at the position where the plano-convex lens 221 is located on the dimming unit 22, the light inlet 131 is directly in front of the convex surface of the plano-convex lens 221. The light source 21 is fixedly installed at the light inlet 131.

[0049] Furthermore, to ensure a more stable installation of the light source 21 and prevent it from shifting due to bumps or impacts during transportation, installation, or use, a sleeve 133 is provided on the outside of the light inlet 131 to fix the light source 21. The sleeve 133 and the light inlet 131 are integrally formed or welded together, making the structure more robust. The light-emitting end of the light source 21 passes through the sleeve 133 and is close to the convex surface of the plano-convex lens 221. The outer diameter of the light source 21 is adapted to the inner diameter of the sleeve 133, ensuring that it will not shift or wobble when installed inside the sleeve 133.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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. All technical solutions that those skilled in the art can obtain based on the concept of the present utility model and on the basis of the prior art through logical analysis, reasoning or limited experiments should be within the protection scope determined by the claims.

Claims

1. A projection lamp with adjustable imaging effect, characterized in that, include: The lamp box (1) has an installation cavity (11) and a projection port (12) communicating with the installation cavity (11). The projection lamp device (2) includes a light source (21), a dimming unit (22), a display unit (23), and a projection unit (24) in sequence. The light source (21), the dimming unit (22), and the display unit (23) are adapted to be installed in the mounting cavity (11). A plano-convex lens (221) is provided on one side of the dimming unit (22), with its convex surface facing the light source (21). The projection unit (24) is provided with a biconvex lens (243). The projection unit (24) is installed on the projection port (12) by adjusting the forward or backward movement of the screw thread. The distance between the biconvex lens (243) and the display unit (23) is adjusted by adjusting the screw thread. The control board (3), the light source (21) and the display unit (23) are electrically connected to the control board (3).

2. The projection lamp with adjustable imaging effect according to claim 1, characterized in that, The projection port (12) is provided with an internal thread (121), and the projection part (24) is provided with an external thread (241). The projection part (24) is adjustablely installed on the projection port (12) through the thread.

3. The projection lamp with adjustable imaging effect according to claim 1, characterized in that, The lamp box (1) is provided with a support base (13). The inner walls of the support base (13) on both sides are symmetrically provided with limiting ribs (14), so that the support base (13) forms an adjacent first mounting cavity (15) and a second mounting cavity (16). The dimming part (22) is adapted to be installed in the first mounting cavity (15), and the display part (23) is adapted to be installed in the second mounting cavity (16).

4. The projection lamp with adjustable imaging effect according to claim 3, characterized in that, The support base (13) is provided with a third mounting cavity (161) communicating with the first mounting cavity (15) on the outside of the support base (13). A plano-convex lens (221) is provided on one side of the dimming part (22). The dimming part (22) is adapted to be installed in the first mounting cavity (15) and the plano-convex lens (221) is adapted to be located in the third mounting cavity (161).

5. The projection lamp with adjustable imaging effect according to claim 4, characterized in that, The third mounting cavity (161) is provided with a light inlet (131), and the outer wall of the support base (13) opposite to the light inlet (131) is provided with a light outlet (132). The light inlet (131) and the light outlet (132) are coaxially arranged.

6. The projection lamp with adjustable imaging effect according to claim 5, characterized in that, The light inlet (131) has a sleeve (133) on the outside for fixing the light source (21), and one end of the light source (21) passes through the sleeve (133) and is close to the convex surface of the plano-convex lens (221).

7. The projection lamp with adjustable imaging effect according to claim 2, characterized in that, The projection unit (24) includes a housing (242) and a biconvex lens (243). The biconvex lens (243) is adapted and fixed inside the housing (242). The external thread (241) is located on the outer wall of one end of the housing (242). The distance between the biconvex lens (243) and the display unit (23) is adjusted by adjusting the thread.

8. The projection lamp with adjustable imaging effect according to claim 2, characterized in that, The projection part (24) can be adjusted by threads to increase the distance between it and the display part (23) by 1mm-4mm.

9. The projection lamp with adjustable imaging effect according to claim 1, characterized in that, The ratio of the projection image distance, focal length, and object distance of the lamp box (1) is 14:1:

1.

10. The projection lamp with adjustable imaging effect according to claim 1, characterized in that, The light box (1) includes an upper cover (101) and a lower cover (102), which are installed by a snap-fit ​​mechanism.

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