CN203369886U - Visual chart instrument - Google Patents
Visual chart instrument Download PDFInfo
- Publication number
- CN203369886U CN203369886U CN201320349922.4U CN201320349922U CN203369886U CN 203369886 U CN203369886 U CN 203369886U CN 201320349922 U CN201320349922 U CN 201320349922U CN 203369886 U CN203369886 U CN 203369886U
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- CN
- China
- Prior art keywords
- visual acuity
- acuity chart
- visual chart
- chart instrument
- visual
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- Expired - Fee Related
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Abstract
The utility model belongs to a visual test tool, in particular to a visual chart instrument comprising a visual chart instrument body. The front end of the visual chart instrument body is provided with an LED light-emitting screen. The surface of the LED light-emitting screen is provided with E-shaped structures transversely arranged. Each row includes ten E-shaped structures. The lower end of each E-shaped structure is provided with a prompt lamp which is connected with a switch on the right side of the visual chart instrument body through a wire. The visual chart instrument body is further provided with a circular hook. The bottom of the visual chart instrument body is provided with guide wheels to provide convenience of mobility. In addition, the visual chart instrument is simple in structure, low in production cost, accurate in visual testing, and suitable for popularization and use in the field of related products.
Description
Technical field
This utility model belongs to a kind of tool for detecting vision, specifically a kind of visual acuity chart.
Background technology
As everyone knows, visual acuity chart is Hospitals at Present, school's a kind of tool for detecting vision commonly used.Visual acuity chart structure of the prior art is too simple, has many deficiencies.At first, visual acuity chart adopts the daylight lamp of tubulose as light source mostly, although more even than incandescent lighting, still there is the inhomogeneous phenomenon of local lighting, the detection affected one's power of vision.In addition, in the vision testing process, the doctor often relies on memory to grasp detected personnel's the vision number of degrees, mistake occurs sometimes.Therefore, need technical progress, structural improvement, make the design of visual acuity chart more reasonable, and the vision data that detect are more accurate.
The utility model content
The purpose of this utility model is in order to solve deficiency of the prior art, and a kind of visual acuity chart accurately that gives a test of one's eyesight is provided.
This utility model comprises the visual acuity chart body, and visual acuity chart body front end is provided with the LED luminescent screen, and LED luminescent screen surface is provided with E type structure, and described E type structure is transversely arranged, and every row is provided with ten E type structures.E type structure lower end is equipped with warning light, and warning light is connected with the switch that is arranged on visual acuity chart body right side by wire, and described visual acuity chart body also is provided with the annular hook.
The wire of described connection warning light is arranged on the inside of visual acuity chart body.
The bottom of this utility model visual acuity chart body also is equipped with directive wheel, and LED luminescent screen surface also is provided with protecting film.
This utility model is a kind of visual acuity chart, owing to having adopted the design of LED light emitting screen structure, makes illuminating effect more even, and it is more accurate that vision detects data; Each E type structure lower end is equipped with warning light, and when detected person's erroneous answers, the tester can press the switch on visual acuity chart body right side, and warning light is glittering, makes error flag.In addition, this utility model is simple in structure, and cost of manufacture is low, and vision detects accurately, is adapted at the Related product field and promotes the use of.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, visual acuity chart body; 2, LED luminescent screen; 3, E type structure; 4, warning light; 5, hook; 6, directive wheel.
The specific embodiment
For making the technical solution of the utility model and characteristics clearer, below in conjunction with embodiment and accompanying drawing, this utility model is described in further detail.At this, following examples are used for this utility model is described, but are not used for limiting scope of the present utility model.
As shown in Figure 1, this utility model comprises visual acuity chart body 1, and visual acuity chart body 1 front end is provided with LED luminescent screen 2, and LED luminescent screen 2 surfaces are provided with E type structure 3, and described E type structure 3 is transversely arranged, and every row is provided with ten E type structures 3.
Described E type structure 3 lower ends are equipped with warning light 4, and warning light 4 is connected with the switch that is arranged on visual acuity chart body 1 right side by wire.In concrete the use, when detected person's erroneous answers, the tester can press the switch on visual acuity chart body right side, and the glittering red light of warning light 4, make error flag.This structural design has changed the tester and has relied on memory to grasp the traditional detection pattern of detected personnel's vision number of degrees, avoids occurring detecting the mistake of data.
Visual acuity chart body 1 of the present utility model also is provided with annular hook 5, and annular hook 5 is convenient to be hung visual acuity chart body 1 on the wall.
The bottom of this utility model visual acuity chart body 1 also is equipped with directive wheel 6, conveniently visual acuity chart body 1 is placed on the ground, can move.
LED luminescent screen of the present utility model 2 surfaces also are provided with protecting film; the structural design of LED luminescent screen 2, make illuminating effect more even, and it is more accurate that vision detects data; protecting film can be protected the clean of LED luminescent screen 2, makes the E type structure 3 on LED luminescent screen 2 more clear.
Obviously, above-described embodiment of the present utility model is only for this utility model example clearly is described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give all embodiments exhaustive.Every still row in protection domain of the present utility model of apparent variation that the technical solution of the utility model extends out or change that belong to.
Claims (5)
1. a visual acuity chart, comprise the visual acuity chart body, described visual acuity chart body front end is provided with the LED luminescent screen, LED luminescent screen surface is provided with E type structure, it is characterized in that described E type structure lower end is equipped with warning light, described warning light is connected with the switch that is arranged on visual acuity chart body right side by wire, and described visual acuity chart body also is provided with the annular hook.
2. a kind of visual acuity chart according to claim 1, is characterized in that the wire of described connection warning light is arranged on the inside of visual acuity chart body.
3. a kind of visual acuity chart according to claim 1, is characterized in that the bottom of described visual acuity chart body also is equipped with directive wheel.
4. a kind of visual acuity chart according to claim 1, is characterized in that described E type structure is transversely arranged, and every row is provided with ten E type structures.
5. a kind of visual acuity chart according to claim 1, is characterized in that described LED luminescent screen surface also is provided with protecting film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320349922.4U CN203369886U (en) | 2013-06-18 | 2013-06-18 | Visual chart instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320349922.4U CN203369886U (en) | 2013-06-18 | 2013-06-18 | Visual chart instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203369886U true CN203369886U (en) | 2014-01-01 |
Family
ID=49832444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320349922.4U Expired - Fee Related CN203369886U (en) | 2013-06-18 | 2013-06-18 | Visual chart instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203369886U (en) |
-
2013
- 2013-06-18 CN CN201320349922.4U patent/CN203369886U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20140618 |
|
| EXPY | Termination of patent right or utility model |