JPH02109723A - Liquid crystal plate sun visor for vehicle - Google Patents

Abstract

PURPOSE:To interrupt solar radiation automatically by driving a crystal plate with the power of a solar battery to change a liquid crystal plate sun visor opaquely when solar radiation onto the face of a driver is detected with the liquid crystal plate sun visor set. CONSTITUTION:When a liquid crystal plate sun visor 2 is set in a cabin inside a frontshield window glass 7 by a driver, a switch 4 for a photo sensor 5 is turned on. The photo sensor 5 is so set that it turns on a liquid crystal drive circuit 6 when solar radiation is given at an incident angle to the eyes of the driver. The liquid crystal drive circuit 6 turned on by the photo sensor 5 receives power from a solar battery 3 to drive the liquid crystal plate sun visor 2. The liquid crystal plate sun visor 2 interrupts solar radiation by changing from transparent to opaque one by this driving. Thus the solar radiation given to the eyes of the driver is automatically interrupted and, therefore, the conventional manual operation of the sun visor becomes unnecessary to increase safety in driving the vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an on-vehicle liquid crystal panel sun visor mounted on an automobile or the like.

[Conventional technology]

FIG. 3 is a front view of the windshield of an automobile equipped with a conventional sun visor, viewed from inside the vehicle.

In the figure, 1 is a sun visor, ( ) is a windshield, and a sun visor 111 is installed on the inside of the windshield (7) as shown in the figure, and is manually stored on the roof side.

Conventional sun visors are made of opaque plates that block sunlight.

Next, the operation will be explained. When sunlight enters the vehicle interior and the driver is dazzled, 1. Manually lower the sun visor to the inside of the windshield (7) to block sunlight. In addition, when the driver is not dazzled by sunlight or when sunlight no longer penetrates, the driver raises the sun visor I111 toward the roof to secure visibility.

[Problem to be solved by the invention]

Conventional sun visors were configured as described above,
When the driver is exposed to glare or when it is unnecessary, the driver can raise and lower the sun visor with help even while driving, and the driver can take his hands off the steering wheel and operate the sun visor while driving. There were other problems, such as the fact that it was dangerous to operate the sun visor even after the vehicle had stopped, and the dazzling conditions that required operating the sun visor were dangerous.

This invention was made to solve the above-mentioned problems, and it reduces the burden on the driver and improves safe driving by automatically blocking sunlight that may cause the driver to feel dazzled. The purpose of this invention is to obtain a liquid crystal panel sun visor for use in vehicles.

[Means to solve the problem]

The vehicle-mounted liquid crystal sun visor according to the present invention replaces the conventional sun visor with a liquid crystal sun visor, and automatically blocks sunlight depending on the angle of incidence of sunlight into the vehicle interior.

[Effect]

In the vehicle-mounted liquid crystal sun visor according to the present invention, the driving device operates by a sensor and a solar cell.

The previously transparent liquid crystal sun visor becomes opaque and blocks sunlight.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure h, (!1 is the liquid crystal panel sun visor.

31 is a solar cell, and this solar cell (31 is a sun visor (
You can also install it in a place that receives plenty of sunlight, rather than installing it inside a garden.

FIG. 2 is a flowchart showing the operation of the liquid crystal panel sun visor of the present invention. In the figure, (41 is the sun visor (21
is a switch that turns on the optical sensor (6) when installed on the inside of the windshield (11). (31 is a solar cell that supplies power to the liquid crystal drive circuit tel.

Next, the operation will be explained.

When the driver installs the liquid crystal sun visor 121 on the inside of the passenger compartment of the 70-inch glass + 71, the original sensor 51 switch (41) is turned on. Turn on the LCD drive circuit tel to
Set it so that When the liquid crystal drive circuit (6) is turned on by the optical sensor (6), power is supplied from the solar cell (31) and drives the liquid crystal sun visor (21).The liquid crystal sun visor (2) changes from transparent to opaque due to this drive. This blocks sunlight.

In the above embodiment, the case of a liquid crystal panel sun visor using solar cells has been described, but the added value of the system can be increased by adding a function of a battery charger while the vehicle is stopped.

〔Effect of the invention〕

As described above, according to the present invention, the sunlight that hits the driver's eyes can be self-helpfully blocked. This eliminates the danger of releasing the sun visor and operating the sun visor, which has the effect of reducing the burden on the driver.

[Brief explanation of drawings]

FIG. 1 is a front view of an automobile windshield according to an embodiment of the present invention as seen from inside the vehicle, FIG. 8 is a flowchart showing the operation of the liquid crystal panel sun visor of this invention, and FIG. 8 is a conventional automobile windshield t. - Shows a front view from inside the vehicle. In the figure, (21 is a liquid crystal panel sun visor, (31 is a solar cell % + 71 is a windshield.

Claims (1)

[Claims] A switch that uses the automotive sun visor as a liquid crystal panel to detect when the automotive sun visor is set, an optical sensor that detects when sunlight enters the vehicle interior and hits the driver's face, and drives the liquid crystal. A vehicle-mounted liquid crystal panel sun visor characterized in that it is equipped with a solar cell that supplies power for the vehicle.