Dot matrix light source device

Abstract

The utility model discloses DOT dot matrix light source device, including casing, reflector, light source and imaging board still include: limiting structure, the limiting structure sets up in the casing, and acts on the imaging board, positioning block, the positioning block is connected with the imaging board through the elastic structure, after the positioning block is penetrated to its outside from the casing inside, realizes the fixation to the imaging board through the positioning assembly. In this application, when imaging board is installed with casing, limiting structure positions imaging board, after the penetration of positioning block to the outside of casing, pulls positioning block, moves pull rod, flange compression spring, positioning block separates with connecting cap, through the butt joint of baffle and notched, realizes the fixation to the imaging board under the action of spring, compared with the fixed mode of traditional bolt etc., the operation is simpler, can realize the quick replacement of imaging board.

Description

Technical Field

[0001] This utility model relates to the field of DOT dot matrix light source technology, and in particular to a DOT dot matrix light source device. Background Technology

[0002] In the existing technology, to protect children's eyesight, a reading and writing device using DOT dot matrix technology has appeared on the market. This device (see reference) Figure 1 As shown, the device involves a DOT dot matrix generation unit (i.e., the DOT dot matrix light source device of this application), a beam splitter, and a telescope. The beam splitter typically divides the space into an upper half and a lower half. The telescope and the observation position are located in the upper half, while the DOT dot matrix generation unit and the observed object are located in the lower half.

[0003] Its principle is (refer to) Figure 2 As shown): The dot matrix light emitted by the DOT dot matrix generation unit generates a real image through a beam splitter. The imaging light of the observed object is magnified and amplified by a magnifying glass after passing through the beam splitter, and then reflected by the beam splitter to form a virtual image. Through the coupling of the virtual image and the real image, children can observe the observed object from the observation position. Compared with the traditional reading and writing method, children do not need to bend over, which can reduce the occurrence of myopia caused by the eyes being too close to the book.

[0004] Regarding the aforementioned read / write device, the applicant has discovered that a DOT dot matrix generation unit typically consists of a housing, an imaging plate, a light source, and a reflector. The reflector and imaging plate are arranged side-by-side, and the light source is distributed on both sides of the reflector. The light emitted by the light source passes through the reflector and illuminates the imaging plate, forming a dot matrix pattern after passing through multiple openings in the imaging plate. Each imaging plate corresponds one-to-one with each set of openings, resulting in only one dot matrix pattern being generated on each imaging plate. Therefore, when switching dot matrix patterns, the imaging plate must be replaced. In the prior art, the imaging plate is generally fixed inside the housing by snap-fit ​​or bolts, making the replacement of the imaging plate inconvenient. Based on the above description, this application proposes a DOT dot matrix imaging device that facilitates the replacement of the imaging plate. Utility Model Content

[0005] The purpose of this invention is to provide a DOT dot matrix light source device to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The DOT dot matrix light source device includes a housing, a reflector, a light source, and an imaging plate, comprising:

[0008] A limiting structure is provided inside the housing and acts on the imaging plate;

[0009] The positioning block is connected to the imaging plate through an elastic structure. After the positioning block penetrates from the inside of the housing to the outside, the imaging plate is fixed by the positioning component.

[0010] Preferably, the elastic structure includes a cylindrical body and a fixed connecting cap thereon, a pull rod with one end fixed to the positioning block passes through the connecting cap, and a pulling structure that applies a pulling force to the pull rod is provided inside the cylindrical body.

[0011] Preferably, the pulling structure includes a spring disposed inside the cylinder, with both ends of the spring abutting against the inner wall of the connecting cap and a flange formed at the other end of the pull rod, respectively.

[0012] Preferably, the positioning assembly includes a stop bar mounted on the housing via a hinge, and the positioning block has a slot on its side that is adapted to the stop bar.

[0013] Preferably, the positioning component includes a rotating arm that rotates in a hidden groove on the outside of the positioning block.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0015] In this application, when the imaging plate is installed with the housing, the limiting structure positions the imaging plate. After the positioning block penetrates to the outside of the housing, pulling the positioning block moves the pull rod, compresses the flange spring, and separates the positioning block from the connecting cap. Through the docking of the stop rod and the slot, the imaging plate is fixed under the action of the spring. Compared with traditional fixing methods such as bolts, the operation is simpler and the imaging plate can be quickly replaced. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the DOT dot matrix technology read / write device provided in Embodiment 1 is shown;

[0017] Figure 2 A schematic diagram of the DOT dot matrix technology read / write device provided in Embodiment 1 is shown.

[0018] Figure 3 An exploded view of the imaging plate, housing, and elastic structure provided in Embodiment 1 is shown;

[0019] Figure 4 A schematic diagram of the back cross-sectional structure of the housing provided in Embodiment 1 is shown;

[0020] Figure 5 The example provided in Embodiment 1 is shown. Figure 4 Enlarged view of part A in the diagram;

[0021] Figure 6 An exploded view of the positioning block and elastic structure provided in Embodiment 1 is shown;

[0022] Figure 7 A schematic diagram showing the connection relationship between the positioning block and the rotating arm provided in Embodiment 2 is shown.

[0023] Figure 8 An exploded view of the housing and imaging plate provided in Embodiment 3 is shown.

[0024] Legend:

[0025] 1. Housing; 2. Reflector; 3. Limiting structure; 4. Imaging plate; 5. Guide hole; 6. Light source; 7. Elastic structure; 8. Stop bar; 9. Positioning block; 10. Groove; 11. Rotating arm; 12. Hidden groove; 13. Side ear; 14. Slot; 71. Cylinder; 72. Flange; 73. Pull rod; 74. Spring; 75. Connecting cap. Detailed Implementation

[0026] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-7 This utility model provides a technical solution: Example

[0028] The DOT dot matrix light source device includes a housing 1, a reflector 2, a light source 6, and an imaging plate 4. The housing 1 has an opening on the side near the beam splitter, and the imaging plate 4 is placed in the opening. There are two light sources 6, which are symmetrically fixed inside the housing 1. The reflector 2 is fixed between the two light sources 6. The light emitted by the light source 6 can act on the imaging plate 4 through the reflector 2.

[0029] The DOT dot matrix light source device also includes:

[0030] Limiting structure 3 is set inside the housing 1 and acts on the imaging plate 4. The limiting structure 3 can be a baffle fixed on the inner wall of the housing 1. The baffle can be a continuous or discontinuous ring structure. When the imaging plate 4 is placed inside the housing 1, the limiting structure 3 acts as a barrier to prevent the imaging plate 4 from penetrating into the housing 1.

[0031] The positioning block 9 is connected to the imaging plate 4 via an elastic structure 7. The elastic structure 7 is fixed to the inner side of the imaging plate 4 and can be set at the four corners of the imaging plate 4 to avoid the light source 6 and the reflector 2. The elastic structure 7 pulls the positioning block 9, giving the positioning block 9 an elastic force to approach the imaging plate 4. The housing 1 has a through hole that matches the positioning block 9. The positioning block 9 can pass through the through hole from the inside of the housing 1 to the outside. The positioning component can fix the positioning block 9. The whole process realizes the connection between the imaging plate 4 and the housing 1.

[0032] Specifically, such as Figure 6 As shown, the elastic structure 7 includes a cylinder 71 and a fixed connecting cap 75. The cylinder 71 and the imaging plate 4 can be fixed by means of adhesive, bolts, etc. The cylinder 71 and the connecting cap 75 are connected by threaded engagement. The connecting cap 75, the cylinder 71 and the positioning block 9 are all columnar structures, and the outer diameters of the connecting cap 75, the cylinder 71 and the positioning block 9 are the same.

[0033] The limiting structure 3 has a guide hole 5. When the imaging plate 4 is installed, the positioning block 9 and the connecting cap 75 will pass through the guide hole 5 in sequence. The outer wall of the cylinder 71 and the inner wall of the guide hole 5 are in a tight fit, which can prevent the imaging plate 4 from shaking and achieve the initial positioning of the imaging plate 4, so as to facilitate the subsequent docking of the positioning block 9 with the through hole.

[0034] A pull rod 73 is threaded through the connecting cap 75, with one end fixed to the positioning block 9. The positioning block 9 can be connected to the pull rod 73 by screw thread. The pull rod 73 and the connecting cap 75 are slidably connected. The pull rod 73 can be a cylindrical structure. To prevent relative rotation between the connecting cap 75 and the pull rod 73, a guide block and a guide groove can be provided between the connecting cap 75 and the pull rod 73. The cylinder 71 is provided with a pulling structure that gives the pull rod 73 a pulling force.

[0035] Specifically, such as Figure 6 As shown, the pulling structure includes a spring 74 disposed inside the cylinder 71. The spring 74 is sleeved on the outside of the pull rod 73. The two ends of the spring 74 abut against the inner wall of the connecting cap 75 and the flange 72 formed at the other end of the pull rod 73, respectively. The diameter of the flange 72 is larger than the diameter of the pull rod 73. The flange 72 is slidably connected to the inner wall of the cylinder 71. Under normal conditions, under the action of the spring 74, the positioning block 9 and the connecting cap 75 are in a close fit state.

[0036] When installing the entire elastic structure 7, first, the spring 74 is placed on the outside of the pull rod 73. Then, the pull rod 73 and the flange 72 are placed inside the cylinder 71. Next, the connecting cap 75 is placed on the outside of the pull rod 73. After the positioning block 9 is screwed and fixed to the pull rod 73, the connecting cap 75 is screwed to the cylinder 71. The whole process completes the assembly of the elastic structure 7.

[0037] Specifically, such as Figure 5 and Figure 6 As shown, the positioning assembly includes a stop bar 8 mounted on the housing 1 via a hinge seat. The hinge seat is fixed on the housing 1, and the stop bar 8 is connected to the hinge seat via a torsion spring shaft. Under the action of the torsion spring shaft, the stop bar 8 is in a close fit with the outer wall of the housing 1, and the movable end of the stop bar 8 is close to the through hole of the housing 1. The side of the positioning block 9 has a slot 10 that matches the size of the stop bar 8.

[0038] When the positioning block 9 passes through the through hole, the stop rod 8 avoids the positioning block 9 and rotates around the hinge. When the positioning block 9 is pulled outward to a certain extent, the positioning block 9 and the stop rod 8 are staggered. In this state, the positioning block 9 no longer restricts the stop rod 8, and the stop rod 8 is reset under the action of the torsion spring shaft. After the positioning block 9 is released, the positioning block 9 is reset under the action of the spring 74. At this time, the slot 10 on the positioning block 9 is connected with the stop rod 8 to limit the positioning block 9. The whole process realizes the fixation of the imaging plate 4.

[0039] Example 2

[0040] The difference from Example 1 is:

[0041] Specifically, such as Figure 7 As shown, the positioning assembly includes a rotating arm 11 that rotates in a hidden groove 12 on the outside of the positioning block 9. Multiple hidden grooves 12 can be provided and are distributed at equal angles about the center of the positioning block 9. The rotating arm 11 is connected to the inner wall of the hidden groove 12 by a torsion spring shaft. Under the action of the torsion spring shaft, the rotating arm 11 is in an outward unfolded state. When the positioning block 9 passes through the through hole, the rotating arm 11 will fold inside the hidden groove 12 to avoid passing through the hole. When the positioning block 9 completely passes through the through hole, the rotating arm 11 is unfolded again. Under the action of the spring 74, the movable end of the rotating arm 11 is in an abutting state with the outer wall of the housing 1. The whole process also realizes the fixation of the imaging plate 4.

[0042] Example 3

[0043] DOT dot matrix light source devices, such as Figure 8 As shown, it includes a housing 1, a reflector 2, a light source 6, and an imaging plate 4. There are two light sources 6, which are symmetrically fixed inside the housing 1. The reflector 2 is fixed between the two light sources 6. The light emitted by the light source 6 can act on the imaging plate 4 through the reflector 2.

[0044] The top of the housing 1 has a slot 14, and a set of guide structures are fixed on the inner walls of both sides of the housing 1. Each set of guide structures consists of two side ears 13 with a gap.

[0045] When the housing 1 and the imaging plate 4 are installed, the bottom of the imaging plate 4 first mates with the slot 14, and then the imaging plate 4 enters into the gap between the two side ears 13. During this process, the imaging plate 4 is in contact with the inner walls of both sides of the housing 1, and the two side ears 13 limit the imaging plate 4 to prevent it from shaking. After the imaging plate 4 is in contact with the bottom inner wall of the housing 1, the fixation between the housing 1 and the imaging plate 4 is completed.

[0046] The top of the imaging plate 4 is provided with a horizontal groove, which provides a force application point and makes it convenient for the user to pull the imaging plate 4.

[0047] To improve the stability of the imaging plate 4, the housing 1 and the imaging plate 4 can be attracted together by magnets, and the position of the magnets can be embedded and installed according to actual needs.

[0048] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A DOT dot matrix light source device, comprising a housing (1), a reflector (2), a light source (6), and an imaging plate (4), characterized in that, Also includes: Limiting structure (3), the limiting structure (3) is disposed in the housing (1) and acts on the imaging plate (4); The positioning block (9) is connected to the imaging plate (4) through the elastic structure (7). The positioning block (9) passes through the inside of the shell (1) to the outside and fixes the imaging plate (4) through the positioning component.

2. The DOT dot matrix light source device according to claim 1, characterized in that, The elastic structure (7) includes a cylinder (71) and a fixed connecting cap (75). A pull rod (73) with one end fixed to the positioning block (9) passes through the connecting cap (75). The cylinder (71) is provided with a pulling structure that gives a pulling force to the pull rod (73).

3. The DOT dot matrix light source device according to claim 2, characterized in that, The pulling structure includes a spring (74) disposed inside the cylinder (71), and the two ends of the spring (74) abut against the inner wall of the connecting cap (75) and the flange (72) formed at the other end of the pull rod (73), respectively.

4. The DOT dot matrix light source device according to claim 1 or 3, characterized in that, The positioning assembly includes a stop bar (8) mounted on the housing (1) via a hinge, and the positioning block (9) has a slot (10) on its side that is adapted to the stop bar (8).

5. The DOT dot matrix light source device according to claim 1, characterized in that, The positioning assembly includes a rotating arm (11) that rotates in a hidden groove (12) outside the positioning block (9).

Images