Biconvex lens projection mechanism and projection clock
By using a double-convex lens projection mechanism to magnify twice, the problem of blurry projection is solved, resulting in a clear time display and a high yield rate for the projection clock, which can meet a variety of design requirements.
Patent Information
- Application Number
- CN202422634373.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Existing projection clocks often produce blurry images or have unclear strokes, and they cannot clearly display the time over a wide area, making them particularly inconvenient for people with poor eyesight.
It employs a dual-convex lens projection mechanism, which magnifies twice through two convex lenses, and combines an LCD clock and a light source to achieve clear projection.
It achieves a clear time display, meets the needs of multiple people observing at the same time, has a high product yield, is small in size, and can adapt to different design requirements.
Smart Images
Figure CN223664929U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of projection clock technology, specifically, it relates to a double convex lens projection mechanism and a projection clock. Background Technology
[0002] Most clocks tell time using hands, though some use LED displays. However, people need to walk to the clock face to see the time, and clocks can't display the time over a large area, making it difficult for multiple people to know the time simultaneously, unless it's a clock in a large square or a clock mounted on a wall in a room. Wall-mounted clocks require a certain distance; while people with good eyesight can easily observe the time, those with weaker vision or who don't wear glasses will find it inconvenient. Projection clocks emerged to address this need.
[0003] Projection clocks can project the time from their dial onto any desired area, such as a wall, ceiling, or floor; however, current projection clocks on the market produce blurry projections or have unclear strokes. Therefore, improvements are necessary. Utility Model Content
[0004] To address the aforementioned problems in the prior art, this utility model provides a biconvex lens projection mechanism and a projection clock, which has a simple structure and produces clear projections.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] As one aspect of this utility model, a biconvex lens projection mechanism is proposed, comprising:
[0007] A connecting frame having a first through hole, wherein a mounting portion is formed in the first through hole;
[0008] An LCD clock is attached to the bottom of the mounting section.
[0009] A first convex lens is connected to the upper part of the mounting part; both the liquid crystal clock and the first convex lens are located inside the first through hole;
[0010] A PCB board is connected to the lower end face of the connecting bracket; the liquid crystal clock is electrically connected to the PCB board; the PCB board has a first clearance hole in the middle.
[0011] A fixing bracket is connected to the lower end of the connecting bracket; the fixing bracket has a second through hole;
[0012] A light source is connected to the lower end of the mounting bracket; the light from the light source passes through the second through hole; the light source is electrically connected to the PCB board.
[0013] A sleeve is connected to the upper part of the connecting frame. The sleeve has a third through hole, and the lower part of the sleeve is connected to the first through hole. A second convex lens is connected to the top of the third through hole.
[0014] Furthermore, the mounting part is a connecting boss that extends radially from the first through hole.
[0015] Furthermore, the PCB board is connected to the lower end face of the connecting frame by fasteners.
[0016] Furthermore, the liquid crystal clock is electrically connected to the PCB board via a conductive strip.
[0017] Furthermore, it also includes a convex lens fixing bracket, which is connected to the top of the sleeve and limits the second convex lens; the convex lens fixing bracket is provided with a second clearance hole.
[0018] As another aspect of this utility model, a projection clock is proposed, which includes: a projection clock body, wherein the projection clock body is provided with a double convex lens projection mechanism as described above, and the PCB board is electrically connected to the main control circuit board of the projection clock body.
[0019] Furthermore, it also includes a pressure plate, the connecting frame being connected to the housing of the projection clock body via the pressure plate.
[0020] Furthermore, the housing of the projection clock body is provided with a limiting protrusion. When the biconvex lens projection mechanism is connected to the housing of the projection clock body, the flange of the convex lens fixing frame cooperates with the limiting protrusion.
[0021] The beneficial effects of this utility model's double convex lens projection mechanism and projection clock are specifically reflected in the following aspects: Double magnification via two convex lenses reduces the requirements for assembly precision, significantly improving the product yield; double magnification via two convex lenses reduces the precision requirements for the convex lenses, meeting the requirement of producing multiple units from a single mold; double magnification via two convex lenses increases the magnification factor, allowing even very small LCD clocks to be clearly magnified, thus reducing product size and meeting various design needs. Attached Figure Description
[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.
[0023] Figure 1 This is a schematic diagram of the structure of the double convex lens projection mechanism of this utility model;
[0024] Figure 2 This is a structural cross-sectional view of the biconvex lens projection mechanism of this utility model;
[0025] Figure 3 This is a schematic diagram of the projection clock of this utility model. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] One embodiment of this application provides a biconvex lens projection mechanism, such as... Figures 1-2 As shown, it includes: a connecting frame 1, the connecting frame 1 having a first through hole 11, and a mounting portion 12 formed in the first through hole 11; as an example, the mounting portion 12 is a connecting boss extending radially from the first through hole 11.
[0028] The LCD clock 2, or LCD for short, is existing technology and will not be described in detail here; the LCD clock 2 is connected to the bottom of the mounting part 12;
[0029] The first convex lens 3 is connected to the upper part of the mounting part 12; both the liquid crystal clock 2 and the first convex lens 3 are located inside the first through hole 11.
[0030] PCB board 4 is connected to the lower end face of connecting frame 1 by fastener 5; the liquid crystal clock 2 is electrically connected to PCB board 4 by conductive strip 6; the middle part of PCB board 4 has a first clearance hole 41 for projection clearance;
[0031] The fixing frame 7 is connected to the lower end of the connecting frame 1 by fasteners 5; the fixing frame 7 has a second through hole 71;
[0032] Light source 8 is connected to the lower end of the fixing frame 7; the light from light source 8 passes through the second through hole 71; light source 8 is electrically connected to PCB board 4, and light source 8 is an LED lamp, with the LED lamp's pins bent and soldered to the corresponding area of PCB board 4;
[0033] Sleeve 9 is connected to the upper part of connecting frame 1. Sleeve 9 has a third through hole 91. The lower part of sleeve 9 is connected to the first through hole 11 to press the first convex lens 3. The top of the third through hole 91 is connected to the second convex lens 10.
[0034] In this embodiment, the light from the light source 8 is focused onto the liquid crystal clock 2, and the display information of the liquid crystal clock 2 is magnified by the first convex lens 3 and further magnified by the second convex lens 10. In this way, the displayed content will have an appropriate font size and be clear and easy to understand.
[0035] In one embodiment, a convex lens fixing bracket 13 is also included. The convex lens fixing bracket 13 is connected to the top of the sleeve 9 to limit and fix the second convex lens 10. The convex lens fixing bracket 13 is provided with a second clearance hole 131 for projection clearance.
[0036] In one embodiment, the center of the second clearance hole 131, the center of the third through hole 91, the center of the second through hole 71, the center of the first clearance hole 41, and the center of the first through hole 11 coincide.
[0037] One embodiment of this application provides a projection clock, such as... Figure 3 As shown, it includes a projection clock body 14. The structure of the projection clock body 14 is existing technology and will not be described in detail here. The projection clock body 14 is provided with a double convex lens projection mechanism as described above. The PCB board 4 is electrically connected to the main control circuit board of the projection clock body 14.
[0038] It also includes a pressure plate 15, the connecting frame 1 is connected to the housing of the projection clock body 14 through the pressure plate 15; the middle part of the pressure plate 15 covers the connecting frame 1, and then the two sides of the pressure plate 15 are connected to the housing of the projection clock body 14 through fasteners to realize the fixation of the double convex lens projection mechanism; it should be noted that the housing of the projection clock body 14 is provided with through holes for projection clearance.
[0039] In one embodiment, the housing of the projection clock body 14 is provided with a limiting protrusion 16. When the biconvex lens projection mechanism is connected to the housing of the projection clock body 14, the flange of the convex lens fixing frame 13 abuts against the limiting protrusion 16, making the connection of the convex lens fixing frame 13 more stable.
[0040] As described above, the advantages of the dual-convex lens projection mechanism and projection clock of this application are as follows: Double magnification via two convex lenses reduces the requirements for assembly precision, significantly improving the product yield; double magnification via two convex lenses reduces the requirements for the precision of the convex lenses, allowing for the production of multiple units from a single mold; double magnification via two convex lenses increases the magnification factor, enabling clear magnification of even very small LCD clocks, thus reducing product size and meeting various design requirements.
[0041] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.
Claims
1. A biconvex lens projection mechanism, characterized in that, It includes: A connecting frame (1) has a first through hole (11) and a mounting part (12) is formed in the first through hole (11); LCD clock (2), the LCD clock (2) is connected to the bottom of the mounting part (12); The first convex lens (3) is connected to the upper part of the mounting part (12); the liquid crystal clock (2) and the first convex lens (3) are both located in the first through hole (11); PCB board (4) is connected to the lower end face of connector (1); the liquid crystal clock (2) is electrically connected to PCB board (4); A fixing frame (7) is connected to the lower end of the connecting frame (1); the fixing frame (7) has a second through hole (71); A light source (8) is connected to the lower end of a mounting bracket (7); the light from the light source (8) passes through a second through hole (71); the light source (8) is electrically connected to the PCB board (4); A sleeve (9) is connected to the upper part of the connecting frame (1). The sleeve (9) has a third through hole (91). The lower part of the sleeve (9) is connected to the first through hole (11). A second convex lens (10) is connected to the top of the third through hole (91).
2. The biconvex lens projection mechanism as described in claim 1, characterized in that, The mounting part (12) is a connecting boss that extends radially from the first through hole (11).
3. The biconvex lens projection mechanism as described in claim 1, characterized in that, The PCB board (4) is connected to the lower end face of the connecting frame (1) by fasteners (5).
4. The biconvex lens projection mechanism as described in claim 1, characterized in that, The liquid crystal clock (2) is electrically connected to the PCB board (4) via a conductive strip (6).
5. A biconvex lens projection mechanism as described in claim 1, characterized in that, It also includes a convex lens fixing bracket (13), which is connected to the top of the sleeve (9) and limits the second convex lens (10); the convex lens fixing bracket (13) is provided with a second clearance hole (131).
6. The biconvex lens projection mechanism as described in claim 1, characterized in that, The PCB board (4) has a first clearance hole (41) in the middle.
7. A projection clock, characterized in that, It includes: a projection clock body (14), wherein the projection clock body (14) is provided with a double convex lens projection mechanism as described in any one of claims 1-6, and the PCB board (4) is electrically connected to the main control circuit board of the projection clock body (14).
8. A projection clock as described in claim 7, characterized in that, It also includes a pressure plate (15), and the connecting frame (1) is connected to the housing of the projection clock body (14) through the pressure plate (15).
9. A projection clock as described in claim 7, characterized in that, The projection clock body (14) has a limiting protrusion (16) on its housing. When the double convex lens projection mechanism is connected to the housing of the projection clock body (14), the flange of the convex lens fixing frame (13) cooperates with the limiting protrusion (16).