RU2581510C1 - Eye protection device for driver against direct solar radiation - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: eye protection device for car drivers against ingress of direct solar radiation comprises a rotary axis anti-glare shield from sun material. To ensure lowering and lifting of the apron the device is equipped with electric motor that rotates the rotary axis. For lowering of sun visor motor is connected to the vehicle accumulator via relay contacts, winding of which is connected to the accumulator via a photoresistor. Deflector for lifting electric motor is connected to the accumulator through contacts of the other relay winding of which is connected in parallel to photoresistor.

EFFECT: higher level of driver's eye protection from sun rays.

1 cl, 1 dwg

Description

The invention relates to the field of automotive industry and can be used in cars to prevent blindness of the driver from direct sunlight.

When driving in sunny weather in the morning and evening, direct sunlight can get into the eyes of the driver. If the road has turns, descents, and ascents, then direct sunlight in the eyes of drivers will occur unexpectedly and may cause temporary blindness. As a result of this, the driver cannot navigate on the road and, therefore, an emergency situation is created.

To protect the driver’s eyes from sunlight in the car, there is an anti-sun visor mounted on the rotary axis (patent RU No. 2350482 from 06.26.2007). When sunlight hits the eyes, the driver lowers the visor with his hand in the desired position, which protects his eyes from direct sunlight. This operation takes some time, prolonging temporary blindness and emergency. Therefore, the problem arises of creating a device that lowers and raises the sun visor, respectively, in the presence and absence of sunlight that can blind the eyes of the driver of the car.

The solution to the problem is carried out by a device that protects the driver’s eyes from direct sunlight, containing an anti-sun visor made of sun-protection material mounted on the rotary axis, which is equipped with an electric motor rotating the rotary axis to ensure lowering and raising the visor, respectively, in the presence and absence of direct sunlight; to lower the sunshield, the motor is connected to the car battery through the relay contacts, the winding of which is connected to kumulyatoru sequentially through the photocell, and to raise the visor electric motor connected to a battery via the contacts of another relay coil is connected in parallel to the photoresistor.

The operation of the device is illustrated in the drawing.

The device consists of a car battery 1, photoresistor 2, electric motor 3, two relays 4, 5, variable resistance 6, two push-button switches 7, 8.

The device operates as follows.

A photoresistor is installed on the windshield of the car. The visor is lowered when direct sunlight hits the photoresistor. At the same time, its resistance decreases and the voltage increases on the windings of the relay 5. Relay 5 is activated and through its contacts K1.1 and K1.2 voltage is supplied from the battery to the motor 3 of a certain polarity. Motor 3 is mechanically rigidly connected to the movable axis on which the sun visor and two protrusions are mounted (not shown in the diagram). The luminous flux at which the relays are activated is regulated by a variable resistance 6. The electric motor rotates the rotary axis, the sun visor is lowered, and the driver’s eyes are protected by the visor from direct sunlight.

When lowering the sun visor to the desired position, the protrusion on the movable axis presses on the button switch 7. As a result, the power supply from the battery through the contact K1.1 is stopped.

It should be noted that the optics (not shown) through which the sun's rays fall on the photodiode is installed so that the sun's rays hit it earlier than in the driver’s eyes. Consequently, the visor drops earlier than the point in time when direct sunlight would fall into the eyes of the driver.

After some time, the car can change the direction of movement, and the sun's rays will not directly fall into the driver’s eyes.

Therefore, the sun visor should be raised to make it easier for the driver to follow the road.

The visor is raised using an electric motor. With a decrease in the light flux incident on the photodiode, its resistance increases, and the voltage drop across it increases. As a result, the voltage on the relay windings decreases, and on the relay 4 increases. Relay 5 is turned off, and relay 4 is activated and, through its closed contacts K2.1 and K2.2, reverse polarity voltage is supplied to the motor from the battery. The motor starts to rotate in the opposite direction and raises the visor to its original position. At this moment, another protrusion on the movable axis presses on the push-button switch S2 and the motor 3 is cut off from the battery 1 through the contacts K2.2.

Claims (1)

A device that protects the driver’s eyes from direct sunlight, comprising an anti-sun visor made of sun-protection material mounted on a rotary axis, characterized in that it is equipped with an electric motor rotating the rotary axis in order to lower and raise the visor, respectively, in the presence and absence of direct sunlight, in order to lower the visor, the motor is connected to the vehicle’s battery through the relay contacts, the winding of which is connected to the battery after tionary through the photocell, and to raise the visor electric motor connected to the battery via the contacts of another relay coil is connected in parallel to the photoresistor.

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