JPS60248428A - Electrically driven sun visor - Google Patents

Abstract

PURPOSE:To prevent the glare of the direct rays of the sun during operation by permitting the automatic turn of a sun visor through the detection of solar radiation. CONSTITUTION:When the pohtodiode 151 of a solar radiation sensor receives the direct rays of the sun, the direct rays are amplified by an amplifying circuit 21, and a direct-ray detecting circuit 22 judges the receiving of the direct rays, and a signal is input into an AND gate 25. Since an operation detecting limit switch 10 is in OFF state at this time, the signal is input into the other edge of the AND gate 25. Then, a motor driving circuit 24 operates, and a sun visor is turned. When the photodiode 151 of the solar radiation sensor does not receive the direct rays, the output of the direct-ray detecting circuit 22 becomes zero, and a motor 3 turns reversely, and the sun visor is housed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a sun visor attached to a windshield of an automobile.

(Prior Art and Background of the Invention) Conventional sun visors are manually operated, and when the driver feels glare, he or she takes the sun visor down with his/her own hands, and in other cases, the driver lowers the sun visor with his or her own hands to obtain a wider field of vision. I had to return the sun visor to its original position while driving.

Therefore, there is a problem in that driving is hindered, such as hindering driving operations.

(Object of the present invention) In view of the above-mentioned problems, an object of the present invention is to provide an electric sun visor that can detect solar radiation and automatically move the sun visor.

(Structure of the present invention) The present invention includes a solar radiation angle sensor that detects solar radiation below an arbitrary set angle, a drive device that rotates a sun visor body, and a drive device that operates according to a signal from the solar radiation angle sensor. It is constructed by a control circuit for stopping the operation.

(Example) Hereinafter, an example of the present invention shown in the drawings will be described. 1st
FIG. 2 is a schematic diagram showing how the electric sun visor according to the present invention is installed on an automobile and an overview of the present invention; FIG. FIG. 3 is a longitudinal sectional view showing the configuration of an embodiment of the solar radiation angle sensor in the electric sun visor of the present invention, and FIG. 4 is an electric circuit diagram of the control circuit C in the electric sun visor of the present invention.

1 is a sun visor main body, and 2 is a motor housing which is assembled integrally with the sun visor main body 1.

3 is a motor, 4 is a speed reduction mechanism, and 5 is a shaft.

Reference numeral 6.7 is a clutch mechanism, in which the clutch 6 is fixed to the shaft 5, and the clutch 7 is attached to the vehicle body so as to be slidable in the axial direction of the stay 9, and is engaged with the clutch 6. Reference numerals 9a and 9b are discs that are integrally formed with the shaft portion 9' of the stay 9, and 9c is a rotation stopper for the clutch 7. 1o is a limit switch for operation detection, 11 is a storage detection limit switch, and the lead wires of the motor 3 and limit switches 10 and 11 are attached to the inside of the stay 9 and guided to the control circuit C. The above-mentioned components constitute a drive device that rotates the sun visor body.

In FIG. 3, 15 is a solar radiation angle sensor embedded in the instrument panel 16, 151 is a photodiode, and 15a is an eaves of the solar radiation angle sensor. The photodiode 151 is arranged to receive solar radiation when the sun is low and the solar radiation angle is as shown by arrow 17, and when the sun is high and the solar radiation angle is as shown by arrow 18, the photodiode 151 receives solar radiation by the eaves 15a of the solar radiation angle sensor 15. It is configured so that it does not.

In the control circuit C shown in FIG. 4, 19.20 is a filter circuit, 21 is an amplifier circuit for the photodiode 151 incorporated in the solar radiation sensor 15, 22 is a direct sunlight detection circuit,
23 is a delay circuit, and 24 is a drive circuit for driving the motor in forward and reverse directions.

Next, the operation of the electric sun visor of the present invention having the above configuration will be explained. The sun visor main body 1 is normally stored in the position indicated by the solid line 1 shown in FIG. 1, and the storage detection limit switch 11 is in the on state. , the operation detection switch 10 is in the off state. When the photodiode 151 of the solar radiation sensor 15 receives direct sunlight 17, it is amplified by the amplifier circuit 21, and the direct sunlight detection circuit 22 determines whether direct sunlight has been received, and a signal of 1 is input to the AND gate 25. At this time, since the operation detection limit switch 1o is in the OFF state, a signal of 1 is input to the other end of the AND gate 25, so the motor drive circuit 24 is operated and the position is set to the dotted line 1a shown in FIG. When the sun visor main body 1 moves and the motion detection switch 10 is turned on, the drive of the motor 3 is stopped. At this time, the storage detection switch 11 is turned off, and a signal of 1 is input to one end of the AND gate 26. Then, when the photodiode 151 of the solar radiation sensor 15 is no longer exposed to direct sunlight, the output of the direct sunlight detection circuit 22 becomes zero. Therefore, a signal of 1 is input to the other end of the AND gate 26, and after a certain period of time has elapsed by the delay circuit 23, the motor drive circuit 24 is driven, the motor 3 is reversed, and is stopped by the on signal of the retraction detection switch 11, and the sun visor The main body 1 is in a stored state.

The purpose of passing through the delay circuit during storage is that under solar radiation conditions that require a sun visor, solar radiation may be temporarily blocked, such as by the shadow of a building, so after solar radiation has been blocked for a certain set time, This is to allow the sun visor to be retracted.

fliB, when the driver 25 manually moves the sun visor 1, the clutch 7 moves against the force of the spring 8 to the position 7a shown in FIG. I am doing it.

In the above embodiment, the solar radiation sensor 15 is embedded in the instrument panel 16, but it may be placed in another location such as an inner mirror without any problem. In short, it is sufficient to have a configuration that detects direct sunlight at an angle less than the angle formed by the line connecting the driver and the front roof with respect to the horizontal ground.

Further, in the above embodiment, the motor is built into the sun visor body, but the sun visor body may be moved by an actuator built into the roof via a drive shaft or the like.

Further, in the above embodiment, control was performed using a solar radiation angle sensor that detects the solar radiation angle, but a solar radiation sensor that determines the weather;
Depending on the combination of time and direction sensors, it is possible to
It may also be a control that operates the sun visor when driving in the direction of the sun in the evening.

Further, in the above embodiment, the solar radiation angle sensor was configured with one photodiode, but it is also possible to use a plurality of photodiodes to determine the height and incidence angle of the sun and stop the sun visor at an arbitrary position. You can also use it as

(Effects of the present invention) As described above, the present invention detects direct sunlight hitting the driver's eyes and automatically operates the sun visor. The effect of not being disturbed is great.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing how the electric sun visor according to the present invention is installed on a car and an overview of the present invention, and FIG. 2 is a partial vertical sectional view showing the configuration of an embodiment of the electric sun visor according to the present invention. 3 is a longitudinal sectional view showing the structure of an embodiment of the solar radiation angle sensor in the electric sun visor of the present invention, and FIG. 4 is an electric circuit diagram of the control circuit C in the electric sun visor of the present invention. 1...Sun visor body, 2...Motor housing, 3...Motor, 9...Mounting stay, IO...
Limit switch for operation detection, 11... Limit/2 switch for storage detection, 15... Solar radiation angle sensor, 151.
...Photodiode, 15a... Eaves of solar radiation angle sensor, C... Control circuit, 22... Direct sunlight detection circuit, 2
3...Delay circuit, A...Drive device for rotating the sun visor body. Representative Patent Attorney Takashi Okabe

Claims (1)

[Claims] (l) A solar radiation angle sensor that detects direct sunlight below an arbitrary set angle, and a drive device that rotates the sun visor body;
An electric sun visor comprising: a control device that activates and stops the drive device based on a signal from the solar radiation angle sensor. (2) The electric sun visor according to claim 1, wherein the control circuit includes a delay circuit.