Medical test visual acuity device for outdoor display

Abstract

The invention discloses a medical test visual acuity device for outdoor display, wherein the medical test visual acuity device comprises a lamp box and a lifting base. The top and the bottom of the lamp box are rotatably connected with an upper mounting frame and a lower mounting frame through rotating shafts respectively; a bracket is arranged between the upper mounting frame and the lower mounting frame, and the bottom of the lower mounting frame is connected with the lifting base through a stand column; the lifting base comprises an upper lifting platform and a base plate, and a lifting cylinder and a lifting rod are arranged between a base plate and the upper lifting platform. The medical test visual acuity device has the advantages of simple structure and convenient use; the lifting base mounted at the bottom of the lamp box of a visual acuity chart can adjust the height of the lamp box of the visual acuity chart according to the actual height of different inspectors, so as to keep the height of the lamp box of the visual acuity chart at the same level as possible with the sight line of to-be-inspected people; the lamp box of the visual acuity chart is rotated by the rotatingshafts according to the sitting posture of the people, and the visual acuity chart on the lamp box is allowed to be in a same horizontal straight line with the sight line of the people, so as to improve the accuracy of the visual acuity examination of the people by the lamp box of the visual acuity chart.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a medical test vision device for outdoor display. Background technique [0002] The eye chart light box is a chart used to measure eyesight. The LED eye chart light box is a new type of light box made based on the principles of energy saving, low carbon, green environmental protection, and accurate detection. It uses LED as the light source, less heat generation, low power consumption, ultra-thin and exquisite weight Light, easy to carry, low power consumption, good brightness, no glare, but the height of the existing eye chart light box is fixed, and the height of the eye chart light box cannot be adjusted according to the actual height of different inspectors. The height of the light box is not at the same level, and the sitting posture of the personnel is different. The angle difference between the eye chart on the light box and the line of sight of the personnel wil...

AI Technical Summary

Problems solved by technology

[0002] The eye chart light box is a chart used to measure eyesight. The LED eye chart light box is a new type of light box made based on the principles of energy saving, low carbon, green environmental protection, and accurate detection. It uses LED as the light source, less heat generation, low power consumption, ultra-thin and exquisite weight Light, easy to carry, low power consumption, good brightness, no glare, but the height of the existing eye chart light box is fixed, and the height of the eye chart light box cannot be adjusted according to the actual height of different inspectors. The height of the light box is not at the same level, and the sitting posture of the personnel is different. The angle difference between the eye chart on the light box and the line of sight of the personnel will affect the visual inspection, resulting in errors in the visual inspection of the visual chart light box

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