CN218220170U - Portable visual acuity chart - Google Patents
Portable visual acuity chart Download PDFInfo
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- CN218220170U CN218220170U CN202222868223.2U CN202222868223U CN218220170U CN 218220170 U CN218220170 U CN 218220170U CN 202222868223 U CN202222868223 U CN 202222868223U CN 218220170 U CN218220170 U CN 218220170U
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- inspection board
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Abstract
The utility model discloses a portable visual acuity chart, which comprises a flexible inspection board, wherein the top of the inspection board is provided with a bearing frame, the back of the inspection board is provided with a plurality of lamp panels, the lamp panels are parallel to each other and are distributed along the length direction of the inspection board, and the length direction of the single lamp panel is vertical to the length direction of the inspection board; the back of the bearing frame is provided with a control panel for controlling the lamp panel; the bearing frame is provided with a hanging part. Has the advantages that: the flexible inspection board is matched with the plurality of transverse strip-shaped lamp panels arranged on the back, so that the flexible inspection board can be wound for storage, the storage volume is reduced, and the flexible inspection board is convenient to carry; through set up the counter weight pole in the bottom of inspection board, can improve its planarization after the inspection board expandes, the observation deviation when reducing visual inspection.
Description
Technical Field
The utility model relates to an eyesight detection instrument technical field, concretely relates to portable eyesight test table.
Background
The most common tool for visual acuity testing is the visual chart. The most common visual chart is an E-shaped chart, a plurality of rows of E-shaped characters which are sequentially reduced from top to bottom are arranged on the front surface of the visual chart, and the eyesight is judged by observing the opening direction of the characters. The existing visual chart is divided into a box type and a paper type, wherein the box type is a lamp box, an observation plate is arranged on the front side of the lamp box, and a light source arranged in the lamp box is lightened and then irradiates the back side of the observation plate to increase the brightness of the observation plate so as to reduce the observation error caused by dark ambient light; the paper watch, namely the visual chart, is of a single-sheet structure and can be directly pasted on a wall surface for observation, but the requirement on the brightness of ambient light is high, so that the observation error is large during visual inspection. The two visual charts have the following defects when in use: the box-type visual chart has small dependence on ambient light, but has large volume, is inconvenient to carry and mostly needs to be connected with a power supply for use; the paper watch is convenient to carry, but has high dependence on ambient light, and is difficult to discharge observation errors caused by dark ambient light.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a portable visual acuity chart just for solving above-mentioned problem, the utility model provides an among a great deal of technical scheme preferred technical scheme have: the portable lighting device is convenient to carry, can provide auxiliary lighting, has small dependence on ambient light and other technical effects, and is explained in detail below.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a portable visual acuity test chart, which comprises a flexible test board, wherein a bearing frame is arranged at the top of the test board, a plurality of lamp panels are arranged at the back of the test board, the lamp panels are parallel to each other and distributed along the length direction of the test board, and the length direction of the lamp panel is vertical to that of the test board;
the back of the bearing frame is provided with a control panel for controlling the lamp panel;
the bearing frame is provided with a hanging part.
Preferably, the hanging part comprises a hanging nail and a hanging rope, the hanging nail is arranged in the middle of the front face of the bearing frame, the hanging nail protrudes out of the bearing frame, and one end of the hanging rope is sleeved on the hanging nail.
Preferably, one end of the hanging rope is provided with an upper hanging ring, the other end of the hanging rope is provided with a lower hanging ring, and the lower hanging ring is sleeved outside the hanging nail; the hanging rope, the upper hanging ring and the lower hanging ring are integrally formed by silica gel materials.
Preferably, the inspection board is a white pet board, and the thickness of the inspection board is 0.2mm to 0.5mm.
Preferably, the inboard of control panel is provided with the electricity and connects the battery of lamp plate, the control panel openly is provided with the control the shift knob of lamp plate switching is provided with on this control panel right the mouth that charges that the battery charges.
Preferably, the bottom of the inspection plate is provided with a balance weight rod, and two ends of the balance weight rod are respectively flush with two sides of the inspection plate.
Preferably, the weight rod is a stainless steel rod, a clamping groove is formed in the weight rod, and the edge of the bottom of the inspection plate is inserted into the clamping groove and then fixed through glue injection.
To sum up, the beneficial effects of the utility model reside in that: 1. the flexible inspection board is matched with the plurality of transverse strip-shaped lamp panels arranged on the back, so that the flexible inspection board can be wound for storage, the storage volume is reduced, and the flexible inspection board is convenient to carry;
2. through set up the counter weight pole in the bottom of inspection board, can improve its planarization after the inspection board expandes, the observation deviation when reducing visual inspection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic front view of the present invention;
fig. 2 is a schematic perspective view of the present invention;
fig. 3 is a schematic view of the back view structure of the present invention;
fig. 4 is a schematic perspective view of another angle of the present invention;
fig. 5 is an enlarged schematic view of a portion a in fig. 1.
The reference numerals are explained below:
1. inspecting the board; 2. a carrier; 3. a hanging part; 31. hanging nails; 32. hanging a rope; 33. hanging a ring; 4. a weight lever; 5. a lamp panel; 6. and a control panel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-5, the utility model provides a portable visual acuity chart, which comprises a flexible inspection board 1, wherein the inspection board 1 is a white pet board, after the lamp board 5 is lighted, light can penetrate the inspection board 1, and the projection area of the lamp board 5 forms a bright strip, letters for visual acuity test can be printed at two corresponding positions, and the thickness of the inspection board 1 is 0.2mm-0.5mm; the top of the inspection board 1 is provided with a bearing frame 2, the back of the inspection board 1 is provided with a plurality of lamp panels 5, the lamp panels 5 are parallel to each other and distributed along the length direction of the inspection board 1, the lamp panels 5 are connected in parallel, wiring adopts flexible insulated stranded copper wires, and the length direction of a single lamp panel 5 is perpendicular to the length direction of the inspection board 1; the flexible inspection board 1 can be rolled to form an approximately cylindrical structure, the rolled volume is close to that of a paper visual chart, the flexible inspection board is convenient to carry, and meanwhile, illumination can be provided for each line of letters through the lamp board 5, so that the influence of external illumination during visual inspection is reduced;
the back of the bearing frame 2 is provided with a control panel 6 for controlling the lamp panel 5; a battery electrically connected with the lamp panel 5 is arranged on the inner side of the control panel 6, a switch button for controlling the lamp panel 5 to be opened and closed is arranged on the front side of the control panel 6, and a charging port for charging the battery is arranged on the control panel 6; the control panel 6 and the bearing frame 2 are plastic plates, and the control panel 6 is used for wiring charging and controlling the opening and closing of the lamp panel 5;
the hanging part 3 is arranged on the bearing frame 2, the hanging part 3 is composed of a hanging nail 31 and a hanging rope 32, the hanging nail 31 is arranged in the middle of the front face of the bearing frame 2, the hanging nail 31 protrudes out of the bearing frame 2, and one end of the hanging rope 32 is sleeved on the hanging nail 31; an upper hanging ring 33 is arranged at one end of the hanging rope 32, a lower hanging ring is arranged at the other end of the hanging rope, and the lower hanging ring is sleeved outside the hanging nail 31; the hanging rope 32, the upper hanging ring 33 and the lower hanging ring are integrally formed by silica gel materials; under the conventional state, go up link 33 and can be used to hang the location on the nail of wall, when accomodating, convolute the lapping with inspection board 1 earlier, and the coiling back lamp plate 5 all is located inspection board 1's inboard, then will hang rope 32 and encircle inspection board 1 a week back, will go up link 33 cover in the peg 31 outside, form the outside and tighten, prevent that inspection board 1 from scattering to improve the stability after the rolling of inspection board 1.
The bottom of the inspection plate 1 is provided with a balance weight rod 4, and two ends of the balance weight rod 4 are flush with two sides of the inspection plate 1 respectively; the weight rod 4 is a stainless steel rod, a clamping groove is formed in the weight rod 4, and the bottom edge of the inspection plate 1 is inserted into the clamping groove and then fixed through glue injection. The balance weight rod 4 is used for improving the flatness of the unfolded inspection plate 1, the inspection plate 1 has a certain rolling tendency when being unfolded, if no balance weight is added, the bottom of the inspection plate is easy to upwarp, and after the balance weight rod 4 is arranged, the flatness of the inspection plate 1 can be improved by pulling down the lower edge of the inspection plate 1.
By adopting the structure, the flexible inspection board 1 is matched with the plurality of transverse strip-shaped lamp panels 5 arranged on the back, so that the flexible inspection board can be wound for storage, the storage volume is reduced, and the flexible inspection board is convenient to carry; the balance weight rod 4 is arranged at the bottom of the inspection plate 1, so that the flatness of the inspection plate 1 can be improved after the inspection plate is unfolded, and the observation deviation in the process of visual inspection is reduced; after coiling inspection board 1, can encircle inspection board 1 with string rope 32 to going up link 33 cover on peg 31, forming in the inspection board 1 outside after the rolling and encircleing the location, can guaranteeing the stability of inspection board 1 rolling state, further improved the convenience that it carried.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A portable visual acuity chart is characterized by comprising a flexible inspection board (1), wherein a bearing frame (2) is arranged at the top of the inspection board (1), a plurality of lamp panels (5) are arranged at the back of the inspection board (1), the lamp panels (5) are parallel to each other and are distributed along the length direction of the inspection board (1), and the length direction of a single lamp panel (5) is perpendicular to the length direction of the inspection board (1);
the back of the bearing frame (2) is provided with a control panel (6) for controlling the lamp panel (5);
the bearing frame (2) is provided with a hanging part (3).
2. A portable eye chart according to claim 1 wherein: hang dress portion (3) and constitute by peg (31) and string rope (32), peg (31) set up bear the positive centre of frame (2), and this peg (31) evagination bear frame (2), a pot head of string rope (32) is established on peg (31).
3. A portable eye chart according to claim 2 wherein: an upper hanging ring (33) is arranged at one end of the hanging rope (32), a lower hanging ring is arranged at the other end of the hanging rope, and the lower hanging ring is sleeved outside the hanging nail (31); the hanging rope (32), the upper hanging ring (33) and the lower hanging ring are integrally formed by silica gel materials.
4. A portable eye chart according to claim 1 wherein: the inspection plate (1) is a white pet plate, and the thickness of the inspection plate (1) is 0.2mm-0.5mm.
5. A portable eye chart according to claim 1 wherein: the inboard of control panel (6) is provided with the electricity and connects the battery of lamp plate (5), control panel (6) openly are provided with control the shift knob of lamp plate (5) switching is provided with on this control panel (6) right the mouth that charges that the battery charges.
6. A portable eye chart according to claim 1 wherein: the bottom of inspection board (1) is provided with counterweight rod (4), the both ends of counterweight rod (4) respectively with the both sides parallel and level of inspection board (1).
7. A portable eye chart according to claim 6 wherein: the weight rod (4) is a stainless steel rod, a clamping groove is formed in the weight rod (4), and the bottom edge of the inspection plate (1) is inserted into the clamping groove and then fixed through glue injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222868223.2U CN218220170U (en) | 2022-10-31 | 2022-10-31 | Portable visual acuity chart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222868223.2U CN218220170U (en) | 2022-10-31 | 2022-10-31 | Portable visual acuity chart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218220170U true CN218220170U (en) | 2023-01-06 |
Family
ID=84669880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222868223.2U Active CN218220170U (en) | 2022-10-31 | 2022-10-31 | Portable visual acuity chart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218220170U (en) |
-
2022
- 2022-10-31 CN CN202222868223.2U patent/CN218220170U/en active Active
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