JPS6340982Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to ski goggles, and detects the humidity inside the goggles, and when the humidity exceeds a certain level, activates a motor to perform forced ventilation.

A very effective way to prevent the goggle lenses of ski goggles from fogging is to forcibly exchange the warm, humid air inside the goggles with the low-humidity, low-temperature outside air. Therefore, there has been provided a goggle which is equipped with a ventilation fan and a small motor that drives the fan at the upper center of the goggle frame, and the inside of the goggle is ventilated by the rotation of the fan. However, in the past, the power switch had to be turned on and off manually, and the user had to decide when forced ventilation was needed using the fan and then operate the motor, so the motor was only activated when necessary. This means that operating the power switch is very cumbersome, and therefore, once the motor is started, even though there is no need for ventilation, the motor is left running, causing power loss. Alternatively, even if some fogging occurs, it is troublesome to operate the power switch, resulting in problems such as the use without ventilation.

The present invention aims to solve these conventional problems, and its features include ski goggles equipped with a ventilation fan and a motor that drives the fan. A humidity sensor that detects the humidity inside the goggles is provided, and a control circuit is provided that operates the motor when the humidity exceeds a predetermined humidity based on an output signal from the humidity sensor.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. As shown in FIGS. 1 to 4, ski goggles include a goggle frame 1, a goggle lens 2 fitted into the goggle frame 1, Ventilation fan 3
, a small motor 4 for driving the fan 3 and the motor 4, a mounting base 5 for attaching the fan 3 and the motor 4 to the goggle frame 1, and a rubber band 7 connected to the goggle frame 1 with a control box 6 in the middle. has been done. The goggle frame 1 is composed of a lens fitting edge 8, a face seat 9, and a peripheral wall part 10, and a goggle lens 2 is fitted onto the lens fitting edge 8.
A close contact material 11 such as a sponge is attached to the face support 9. The peripheral wall portion 10 is provided with a plurality of ventilation holes 12 on both sides of the lower part and a breathable covering material 13 that covers the same from the outside, and similar ventilation holes 14 and a covering material 15 are provided on the upper side. and its covering material 1
5 is protected by a protector 16. Mounting stand 5
is equipped with a ventilation hole 17 at the lower center and a motor mounting part 18 corresponding to the ventilation hole 17, and the peripheral wall part 1 of the goggle frame 1.
0 through an engaging claw 19. The motor 4 is fitted into the motor mounting portion 18 from above, and the fan 3 is mounted to the lower end of the output shaft of the motor 4. The fan 3 is of an axial flow type or the like. The protector 16 has an upwardly protruding portion 20 in a portion corresponding to the mounting base 5, and also has a large number of openings 2.
1, and is configured so as not to impair breathability. The goggle lens 2 has two inner and outer lens plates 2.
The lens plate 22 has a pinhole 24 communicating with the inside of the lens.
is formed, and a water-repellent ventilation filter 25 is attached to cover this pinhole 24. Inside the control box 6, there is a power source 26 such as a battery,
A control device 27 for controlling the motor 4 is housed therein. The control device 27 is comprised of a power switch 28, a humidity sensor 29, and a control circuit 30, as shown in FIG. The power switch 28 is of a sliding type, for example, and can be turned on and off by an operator 31 that projects downward from the control box 6. The humidity sensor 29 detects the humidity inside the goggles 32, that is, on the face side, and is attached to the inner surface of the inner lens plate 22, for example, above the water-repellent ventilation filter 29. The humidity sensor 29 is one that detects a rise in humidity and has a large electrical resistance, but it goes without saying that the sensor is not limited to this. The control circuit 30 includes transistors 33,3
4, 35, resistor 36, 37, 38, diode 3
9, 40, etc., and is for automatically operating the motor 4 when the humidity inside the goggles 32 is higher than a predetermined humidity. Each element of the control circuit 30 is mounted on a printed circuit board 41.

Next, the operation of the above configuration will be explained. When using goggles at a ski resort, turn off the power switch 2.
Turn on 8. At this time, if the humidity inside the goggles 32 is low, the electrical resistance of the humidity sensor 29 is small, so current only flows through the resistor 36, diode 39, and humidity sensor 29, and the transistor 33 is not turned on, so the motor 4 remains stopped. When the humidity inside the goggles 32 increases and reaches a state where fogging occurs, or a state close to that, the electrical resistance of the humidity sensor 29 increases,
Transistor 33 turns on. Therefore, the Darlington-connected transistors 34 and 35 are turned on, and the motor 4 is energized and operates in the normal rotation direction.
As a result, the fan 3 rotates in the exhaust direction, exhausting the warm air inside the goggles 32 from the ventilation hole 17 of the mounting base 5 to the outside as shown by the arrow a in FIG. Since the air is introduced through the pores 12 and 14 to forcibly ventilate the inside and outside of the goggles, fogging of the goggle lenses 2 or the lenses of vision correction glasses can be prevented. After forced ventilation, if the humidity inside the goggles 32 decreases, the transistor 33 is turned off again, and the transistors 34 and 35 are turned off, so that the motor 4 is stopped.

In the above embodiment, the fan 3 rotates in the exhaust direction, but it may also rotate in the intake direction, and as shown in FIG. A changeover switch 42 for reverse rotation may be provided to select intake and exhaust depending on conditions such as the presence or absence of snowfall.

Furthermore, it is also possible to change the rotation speed of the motor 4 by controlling the current or voltage in proportion to the magnitude of the output signal of the humidity sensor 29. In this case, it is desirable to adopt a pulse control method to prevent power loss.

The humidity sensor 29 is installed at the inner lens plate 22.
However, the inner surface of the peripheral wall portion 10 may be used instead.

In this invention, the humidity sensor detects the humidity inside the goggles, and when the humidity exceeds a predetermined humidity, the control circuit operates the motor.
It is possible to reliably prevent dew condensation inside the goggles such as goggle lenses, and since the motor is automatically activated, there is no need for the troublesome operation of conventional methods, and a predetermined anti-fog effect is always possible.

[Brief explanation of the drawing]

1 to 5 illustrate a first embodiment of the present invention, in which FIG. 1 is a perspective view, FIG. 2 is a vertical sectional view, and FIG. 3 is a view taken in the direction of the - arrow in FIG. 4 is a sectional view of the control section, FIG. 5 is a circuit diagram of the control section, and FIG. 6 is a circuit diagram showing another embodiment of the present invention. 1... Goggle frame, 2... Goggle lens, 3
...Fan, 4...Motor, 5...Mounting base, 6...
...Control box, 26...Power source, 27...Control device, 29...Humidity sensor, 30...Control circuit.

Claims (1)

[Scope of utility model registration request] In ski goggles equipped with a ventilation fan and a motor that drives the same, a control circuit is provided with a humidity sensor that detects the humidity inside the goggles, and operates the motor when the humidity exceeds a predetermined humidity based on an output signal from the humidity sensor. Ski goggles characterized by being provided with.