Portable long-distance reading device

Abstract

The utility model discloses a portable long-distance reading device which comprises a supporting frame, a top cover and a folding frame, the top cover and the folding frame are respectively connected with the supporting frame in a rotating mode, a spherical mirror is vertically arranged on the inner side of the supporting frame, a spectroscope is arranged on the inner side of the folding frame, and folding assemblies are arranged on the two side faces of the supporting frame respectively. The folding assembly comprises fixed inner plates, movable inner arms and movable outer arms, the fixed inner plates are fixed to the two side faces of the supporting frame respectively, the movable inner arms and the movable outer arms are rotationally connected with the fixed inner plates through movable shafts, and the two sides of the top cover are fixed to the movable outer arms through bolts respectively. The two sides of the folding frame are fixed to the movable inner arm through bolts respectively, and positioning holes are formed in the fixed inner plate and the movable inner arm respectively. The device not only can realize long-distance reading, but also is convenient to carry by children, adopts a foldable structure, is convenient to unfold and close, can be operated by the children, and is convenient for the children to read through the device anytime and anywhere.

Description

Technical Field

[0001] The utility model relates to the technical field of reading devices, in particular to a portable long-distance reading device. Background Technique

[0002] Myopia is a common eye disease, which is also very common in children. The main reasons for children's myopia are bad eye-using habits, such as long-term close-range eye use, too close reading distance or excessive use of electronic products such as computers and mobile phones. Therefore, it is very necessary to provide a long-distance reading device for children. Chinese Patent Application No. 201210194161.X discloses a long-distance reading system for controlling the development of juvenile myopia, which includes an optical magnification element and a collimating element, a bracket, and a light source located beside the bracket. The optical magnification element includes a lens and a first plane reflector arranged in sequence above the bracket, a beam splitter and a concave mirror for receiving the reflected light of the first plane reflector, and a second plane reflector for receiving the reflected light of the beam splitter above the beam splitter and a screen for receiving the reflected light of the second plane reflector; although long-distance reading can be achieved, the problem is that four optical lenses are required to complete long-distance imaging, which indirectly increases the weight of the reflection system, not only resulting in an increase in volume, but also unable to be folded, thus making it inconvenient for children to carry and store; it cannot meet the needs in actual use, so there is an urgent need for improved technology in the market to solve the above problems. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a portable long-distance reading device, which can not only achieve long-distance reading, but also is convenient for children to carry. It adopts a foldable structure, which is convenient to unfold and close, and can be operated by children themselves, facilitating children to read through this device at any time and place, and can effectively solve the problems in the background technique.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: A portable long-distance reading device, including a support frame, a top cover and a folding frame. The top cover and the folding frame are respectively rotatably connected to the support frame. A spherical mirror is vertically arranged inside the support frame, and a beam splitter is arranged inside the folding frame. Folding components are respectively arranged on both sides of the support frame. The folding component includes a fixed inner plate, a movable inner arm and a movable outer arm. The fixed inner plates are respectively fixed on both sides of the support frame. The movable inner arm and the movable outer arm are rotatably connected to the fixed inner plate through a movable shaft. Both sides of the top cover are respectively fixed on the movable outer arm through bolts, and both sides of the folding frame are respectively fixed on the movable inner arm through bolts.

[0005] Furthermore, positioning holes are respectively provided on the fixed inner plate and the movable inner arm, a spring pin is provided on the movable outer arm, the spring pin corresponds to the positioning hole, and a positioning component is provided on the fixed inner plate, and the positioning component is a spring positioning bead or a spring pin.

[0006] Furthermore, a hinged arm plate is provided on the top cover, a long hole is provided on the hinged arm plate, and the folding frame is slidably connected to the long hole on the hinged arm plate.

[0007] Furthermore, a folding light-shielding cover is provided between the top cover and the support frame, and a bracket is connected to the rear side surface of the support frame.

[0008] Furthermore, a lighting lamp is connected to the folding frame through a hinge.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] 1. This device can not only realize long-distance reading, but also is convenient for children to carry. It adopts a foldable structure, which is convenient to unfold and close. Children can operate it by themselves, making it convenient for children to read through this device anytime and anywhere.

[0011] 2. A spring pin is provided. When folding is required, only need to pull the spring pin out of the positioning hole, then folding can be carried out. Through the spring positioning bead and the hole on the movable inner arm, the positioning of the movable inner arm is realized, ensuring that the folding frame forms a 45-degree angle after unfolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is a schematic structural diagram of the folding assembly of the present utility model;

[0014] Figure 3 is a schematic unfolded structural diagram of the folding light-shielding cover of the present utility model;

[0015] Figure 4 is a schematic closed structural diagram of the present utility model;

[0016] Figure 5 is an axonometric view of the folding assembly of the present utility model;

[0017] Figure 6 is a schematic diagram of the imaging principle of the present utility model.

[0018] In the figure: 1 top cover, 2 beam splitter, 3 folding frame, 4 spherical mirror, 5 support frame, 6 lighting lamp, 7 hinged arm plate, 8 folding assembly, 9 bracket, 10 fixed inner plate, 11 movable inner arm, 12 movable shaft, 13 movable outer arm, 14 spring pin, 15 positioning hole, 16 spring positioning bead, 17 folding light-shielding cover, 18 long hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0020] Please refer to Figure 1-6 , the present utility model provides a technical solution: a portable long-distance reading device, including a support frame 5, a top cover 1 and a folding frame 3. The top cover 1 and the folding frame 3 are respectively rotatably connected to the support frame 5. A spherical mirror 4 is vertically arranged inside the support frame 5, and a beam splitter 2 is arranged inside the folding frame 3. After the folding frame 3 is unfolded, it forms a 45-degree angle with the vertical direction. According to the imaging principle, the image of the book passes through the beam splitter 2 and then is reflected to the spherical mirror 4. After being magnified by the spherical mirror 4, it is reflected back through the beam splitter 2 to the human eye. The imaging distance satisfies the formula: 1 / u - 1 / v = 2 / r; where u is the object distance, v is the image distance, and r is the radius. u = the distance from the book to the center of the beam splitter 2 + the distance from the center of the beam splitter 2 to the center of the spherical mirror 4. Folding assemblies 8 are respectively arranged on both side surfaces of the support frame 5. The folding assembly 8 includes a fixed inner plate 10, a movable inner arm 11 and a movable outer arm 13. The fixed inner plate 10 is respectively fixed on both side surfaces of the support frame 5. The movable inner arm 11 and the movable outer arm 13 are rotatably connected to the fixed inner plate 10 through a movable shaft 12. Both sides of the top cover 1 are respectively fixed on the movable outer arm 13 by bolts, and both sides of the folding frame 3 are respectively fixed on the movable inner arm 11 by bolts. The folding function of the top cover 1 and the folding frame 3 is realized through the movable outer arm 13 and the movable inner arm 11, reducing the volume of the reading device, facilitating carrying, and improving the practicability of the device.

[0021] Positioning holes 15 are respectively arranged on the fixed inner plate 10 and the movable inner arm 11, and a spring pin 14 is arranged on the movable outer arm 13. The spring pin 14 corresponds to the positioning hole 15. The movable outer arm 13 and the movable inner arm 11 are fixed in the unfolded state or the folded state through the cooperation of the spring pin 14 and the positioning hole 15, preventing the top cover 1 from suddenly opening without restraint. When folding is required, only need to pull the spring pin 14 out of the positioning hole 15, and then folding can be carried out. A positioning component is arranged on the fixed inner plate 10, and the positioning component is a spring positioning bead 16 or a spring pin. By inserting the positioning component into the hole of the movable inner arm 11, the positioning of the movable inner arm 11 is realized, ensuring that the folding frame 3 forms a 45-degree angle after being unfolded.

[0022] A hinge arm plate 7 is provided on the top cover 1, and a long hole 18 is formed in the hinge arm plate 7. The folding frame 3 is slidably connected to the long hole 18 on the hinge arm plate 7, and the hinge arm plate 7 functions to limit the angle between the top cover 1 and the folding frame 3.

[0023] A folding light shield 17 is provided between the top cover 1 and the support frame 5. The folding light shield 17 is made of a flexible light-shielding material. A bracket 9 is connected to the rear side of the support frame 5, and the height between the support frame 5 and the bracket 9 can be adjusted.

[0024] The folding frame 3 is connected with a lighting lamp 6 through a hinge. The lighting lamp 6 folds together with the folding frame 3. After the lighting lamp 6 is unfolded, it is in a horizontal state and parallel to the book. A fixed light source is provided on the bottom surface of the support frame 5.

[0025] Working principle: The spherical mirror 4 in the support frame 5 receives the picture of the book from the beam splitter 2 in the 45° folding frame 3, and the user can see the content of the spherical mirror 4 through the beam splitter 2 in the 45° inclined frame 3.

[0026] As shown in the appendix Figure 6 The imaging distance satisfies the formula: 1 / u - 1 / v = 2 / r; where u is the object distance, v is the image distance, and r is the radius. u = the distance from the book to the center of the beam splitter 2 + the distance from the center of the beam splitter 2 to the center of the spherical mirror 4. Object distance: u = O 1 O 2 +O 2 O 3 ; v = O 3 O 4 ; r is the radius of the spherical mirror 4.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Without departing from the spirit and scope of the present invention, the present invention has various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A portable long-distance reading device, comprising a support frame (5), a top cover (1) and a folding frame (3), characterized in that: The top cover (1) and the folding frame (3) are rotatably connected to the support frame (5), a spherical mirror (4) is vertically arranged on the inner side of the support frame (5), a beam splitter (2) is arranged on the inner side of the folding frame (3), and folding components (8) are arranged on both side surfaces of the support frame (5), the folding components (8) include a fixed inner plate (10), a movable inner arm (11) and a movable outer arm (13), the fixed inner plate (10) is fixed on both side surfaces of the support frame (5), the movable inner arm (11) and the movable outer arm (13) are rotatably connected to the fixed inner plate (10) via a movable shaft (12), both sides of the top cover (1) are fixed to the movable outer arm (13) via bolts, and both sides of the folding frame (3) are fixed to the movable inner arm (11) via bolts.

2. A portable long-distance reading device according to claim 1, characterized in that: The fixed inner plate (10) and the movable inner arm (11) are respectively provided with positioning holes (15), the movable outer arm (13) is provided with a spring pin (14), the spring pin (14) corresponds to the positioning hole (15), and the fixed inner plate (10) is provided with a positioning component, which is a spring positioning bead (16) or a spring pin.

3. A portable long-distance reading device according to claim 1, characterized in that: A hinged arm plate (7) is provided on the top cover (1), a long hole (18) is opened on the hinged arm plate (7), and the folding frame (3) is slidably connected to the long hole (18) on the hinged arm plate (7).

4. A portable long-distance reading device according to claim 1, characterized in that: A foldable light shield (17) is provided between the top cover (1) and the support frame (5), and a bracket (9) is connected to the rear side of the support frame (5).

5. A portable long-distance reading device according to claim 1, characterized in that: The folding frame (3) is connected to a lighting lamp (6) via a hinge.

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