JPS62109539A - Sight discrimination apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a visual acuity determination device installed in an automobile and used for visual acuity testing for driving considerations.

[Technological Past] Your eyesight may deteriorate without you even realizing it. Although visual acuity tests should be performed on a regular basis, it is difficult to do so, and poor eyesight is often recognized when renewing a driver's license. In addition, visual acuity deteriorates when the body is fatigued, which impedes safe driving, so this is an important matter when driving.

[First Object of the Invention] An object of the present invention is to make it possible to easily perform a visual acuity test before driving, and to contribute to safe driving by taking actions such as stopping the engine or issuing an alarm if the visual acuity is below a predetermined level. The purpose of the present invention is to provide a visual acuity determination device that is capable of determining visual acuity.

[Summary of the Invention] The present invention provides a display installed inside a car with a frame for separating the subject's eyes from the display surface by a certain distance, and a visual acuity judgment screen displayed on the display. The test subject looks at the notched ring mark and presses a switch to indicate the position of the cut in the mark, and compares the mark displayed on the display with the testee's perceived result from operating the switch. It determines whether the visual acuity is correct or incorrect, and generates a change signal that determines the next visual acuity size and cut position.
The present invention is characterized in that it includes a control section that performs processing such as stopping the engine and issuing an alarm.

[Embodiment] FIGS. 1 to 4 show an embodiment of the present invention, in which a display is installed inside an automobile, for example, on a dash board. In the figure, 11 is a dash board, 124
Yo meter (speedometer, etc.), 13 is the windshield, 1
4 is a handle, 15 is a display, and if there is an existing one, you may use it.

16 is a control unit; 17 is a four-point switch for the subject to instruct the direction (position) of the cut when looking at the circular mark with a cut for visual acuity determination displayed on the display 15; and 18 is an ignition circuit. When it is determined that the visual acuity is insufficient, a control signal such as stopping the engine is received from the control section 16.

A display frame 19 is attached to the display 15, as shown in FIGS. 2 and 3, for separating the subject's eyes from the display surface by a certain distance a.

The control unit 16 places 7 marks on the display 15.
A function to display and change the position of the cut (its size), a function to compare the test subject's perceptual result by operating the switch 17 and the set mark to determine whether it is correct or incorrect, and a function to determine whether the test subject's visual acuity is uncertain. It has the ability to issue a signal to the ignition circuit 18 to stop the engine or issue an alarm (display on the display 15, voice synthesis, etc.).

As shown in FIG. 4, the size of the mark is determined according to the degree of visual acuity, and the cut can be changed in four directions: up, down, left, and right.

Next, the operation will be described. During the visual acuity test, the subject (driver) touches the display frame 19 with his or her face and looks at the display surface of the display 15. A mark for low vision, that is, a large mark is displayed on the display 15, and the direction of the cut is indicated by operating a switch 17. The control unit 16 compares this instruction (perception result) with the setting mark to determine whether it is correct or incorrect.

If the direction of the cut of the displayed mark is the same as the direction of the response, the mark of higher visual acuity is controlled and the mark of that size is displayed. After this,
When the switch 17 is operated, the above-described operation is performed. These actions are repeated to determine visual acuity, which is determined by the road traffic law (0.7 for one eye, 1.7 for both eyes).
0 or more), the visual acuity is considered to be good.

If the visual acuity is below the specified level and the judgment result is "wrong",
A signal to stop the engine is sent from the control unit 1G to the ignition circuit 18, making it impossible to operate the engine, but a warning is issued by a display or a voice (synthesized sound). The subject is forced to refrain from driving due to the occurrence of this alarm.

5 and 6 show other embodiments of the present invention,
The front part of the display frame 19 is designed to look through binoculars. That is, there are two eyepieces 20A on the front side of the frame 19.
A viewing section 20 is attached thereto, and a shutter 21 for automatically switching between the left and right eyes is provided inside.

In this case as well, the visual acuity determination operation is the same as in the previous embodiment.

[Effects] As described above, according to the present invention, a display is installed inside a car or an existing display is used, a visual acuity determination mark is displayed on it, and the response ( Compare the perception result) with the display (setting) mark to determine whether it is correct or incorrect, and if the visual acuity is uncertain, stop the engine or
Occurrence: Occurrence: ``Because it occurred,'' it was caused by drunkenness and overwork.
: Now you can easily know the decline in your health,
It can greatly contribute to safe driving.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a configuration explanatory diagram showing an embodiment of the visual acuity discrimination device according to the present invention, FIGS. 2 and 3 are a front view and a side view of a part of the display in the same embodiment, Figure 4 is a diagram for explaining the relationship between the size of visual acuity determination marks and visual acuity;
6 are a front view and a side sectional view showing other configuration examples of a part of the display. 11...Dashboard 15...Display 1G...Control unit 17...Switch 18...Ignition circuit 19...Display frame Patent applicant Stanley Electric Co., Ltd. Figure 1 Figure 2 Figure 3 4 Figure 5 Figure C - Table E 0.5 - It77/i [ Figure 6

Claims (1)

[Claims] A display was installed inside a car with a frame to keep the subject's eyes a certain distance from the display surface, and the subject looked at the notched circular mark displayed on this display to determine visual acuity. The examiner presses a switch to indicate the position of the break in the mark, and compares the mark displayed on the display with the testee's perceived result of operating the switch to determine whether it is correct or not, and then determines the next visual acuity level. What is claimed is: 1. A visual acuity discriminating device comprising: a control section that generates a signal for changing the position of the eye and the cut position, and that performs processes such as stopping the engine and issuing an alarm.