CN210783086U

CN210783086U - Light adjustable helmet

Info

Publication number: CN210783086U
Application number: CN201921871500.7U
Authority: CN
Inventors: 李风华; 余德桢
Original assignee: Zhuhai Weiku Technology Co ltd
Current assignee: Zhuhai Weiku Technology Co ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-06-19
Anticipated expiration: 2029-11-01

Abstract

The utility model discloses a dimmable helmet, which comprises a helmet body, a sunshade lens arranged on the helmet body and a driving power supply; the sunshade lens is provided with a liquid crystal dimming film, and the driving power supply is used for outputting driving voltage to the liquid crystal dimming film. The utility model discloses a control is applyed the drive voltage size on the membrane of liquid crystal light modulation, makes the user can be under the environment of different light intensity, and the light intensity through adjusting the liquid crystal light modulation membrane makes immediately can adapt to people's eye required to the light intensity after the membrane of liquid crystal light modulation to the use comfort of helmet has been improved.

Description

Light adjustable helmet

Technical Field

The utility model relates to a helmet field, concretely relates to helmet of can adjusting luminance.

Background

The helmet is a harness for protecting the head, and is particularly widely applied in daily life of people, such as riding, skiing and other outdoor sports.

In order to further achieve the purposes of wind shielding and sun shading, the existing helmet is additionally provided with a wind shielding mirror surface on the basis of the original helmet body, the sun shading lens is arranged on one side, close to the face of a user, of the helmet body and is made of organic glass, and a chemical coating, such as a polyurethane film, is coated on the outer surface of the sun shading lens so as to reflect and refract light rays emitted onto the arc sun shading lens and weaken the light rays emitted onto human eyes.

However, the sunshade lens coated with the chemical coating can only weaken light with fixed intensity, and when the intensity of ambient light changes, the sunshade lens cannot adjust the light transmittance thereof to meet the requirement of the user's eyes on the intensity of light, so the comfort of use is not ideal.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a helmet of can adjusting luminance aims at solving the relatively poor problem of helmet use comfort among the prior art.

In order to achieve the above object, the present invention provides a dimmable helmet, which includes a helmet body, a sunshade lens disposed in the helmet body, and a driving power supply; the sunshade lens is provided with a liquid crystal dimming film, and the driving power supply is used for outputting driving voltage to the liquid crystal dimming film.

Preferably, the driving power supply adopts a rechargeable battery or a dry battery.

Preferably, the dimmable helmet further comprises a controller electrically connected with the driving power supply and a light sensor electrically connected with the controller, and the controller is used for adjusting the driving voltage output by the driving power supply according to a sensing signal of the light sensor.

Preferably, the dimmable helmet further comprises a touch sensing chip electrically connected with the driving power supply and the two conductive layers in the liquid crystal dimming film, wherein the touch sensing chip is used for collecting capacitance value change between the two conductive layers and adjusting the driving voltage output by the driving power supply according to the capacitance value change.

Preferably, the dimmable helmet further comprises a manual adjusting switch arranged on the outer side of the helmet body, and the manual adjusting switch is electrically connected with the driving power supply.

Preferably, the manual adjustment switch employs a membrane potentiometer.

Preferably, the driving power source adopts a solar cell.

Preferably, the driving power supply adopts a transparent solar film, and the transparent solar film is arranged on the outer side of the liquid crystal dimming film.

Preferably, the liquid crystal dimming film comprises a first polarizer, a first matrix layer, a first conducting layer, a first alignment layer, a liquid crystal layer, a second alignment layer, a second conducting layer, a second matrix layer and a second polarizer which are arranged in a stacked mode, the polarization directions of the first polarizer and the second polarizer are perpendicular to each other, and the liquid crystal layer is made of one of a TN liquid crystal material, a VA liquid crystal material, an ECB liquid crystal material and an STN liquid crystal material.

Preferably, the liquid crystal dimming film comprises a third substrate layer, a third conductive layer, a third alignment layer, a guest-host effect liquid crystal layer, a fourth alignment layer, a fourth conductive layer and a fourth substrate layer which are arranged in a stacked manner.

The utility model discloses a set up liquid crystal membrane of adjusting luminance on the sun-shading lens of helmet, utilize drive power supply to apply driving voltage to the conducting layer in the liquid crystal membrane of adjusting luminance, liquid crystal molecule in the membrane of adjusting luminance of drive liquid crystal deflects, thereby correspond the luminousness of adjusting liquid crystal membrane of adjusting luminance, it is required that the light intensity that makes the sun-shading lens see through can adapt to people's eye, consequently, the user can be according to ambient light intensity, the light intensity in people's eye in the helmet is penetrated in the adaptability regulation, make eyes remain throughout in the light environment that suits, therefore this helmet of adjusting luminance has the use comfort level of preferred.

Drawings

Fig. 1 is a schematic structural diagram of a dimmable helmet according to an embodiment of the present invention;

fig. 2 is a functional block diagram of a dimmable helmet according to another embodiment of the present invention;

fig. 3 is a functional block diagram of a dimmable helmet according to another embodiment of the present invention;

fig. 4 is a functional block diagram of a dimmable helmet according to another embodiment of the present invention;

fig. 5 is a schematic structural view of a liquid crystal dimming film in a dimmable helmet according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a liquid crystal dimming film in a dimmable helmet according to another embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same elements or elements having the same function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In order to solve the above problems, as shown in fig. 1-6, the present invention provides a dimmable helmet, which includes a helmet body 1, a sunshade lens 2 and a driving power supply 3; the sunshade lens 2 is arranged on one side, close to the face of a person, of the helmet body 1, the liquid crystal dimming film 4 is arranged on the sunshade lens 2, the driving power supply 3 is electrically connected with the two conducting layers in the liquid crystal dimming film 4, and the driving power supply is used for outputting driving voltage for driving liquid crystal molecules in the liquid crystal dimming film 4 to deflect to the liquid crystal dimming film 4.

In this embodiment, the helmet body 1 includes an outer shell, an inner liner, and other accessories, the outer shell is made of a high-strength material, and has the characteristics of impact resistance, corrosion resistance, and the like, the inner liner serves as a buffer between the head and the outer shell, and the other accessories include a fixing band for fixing the helmet to the head, and the like. The sunshade lens 2 can be fixed or movably connected on the helmet body 1, and when a person wears the helmet, the sunshade lens 2 is positioned in front of or above the face. The sunshade lens 2 is preferably a curved lens, and a liquid crystal light adjusting film 4 is arranged on the inner surface, the outer surface or the middle of an interlayer of the curved lens, and the liquid crystal light adjusting film 4 covers the whole sunshade lens 2. The liquid crystal dimming film 4 is generally composed of upper and lower flexible substrates, two conductive layers between the two flexible substrates, and a liquid crystal material between the two conductive layers. The driving power supply 3 is used for applying driving voltage to the two conductive layers, the driving voltage on the two conductive layers forms an electric field on the liquid crystal material, the electric field can drive liquid crystal molecules in the liquid crystal material to deflect, the larger the driving voltage is, the larger the deflection angle of the liquid crystal molecules is, so that the penetration rate of light rays irradiated on the liquid crystal material is changed, the intensity of the light rays which penetrate through the liquid crystal dimming film 4 and the sunshade lens 2 and are irradiated into the helmet is adjustable, the light rays are made to be suitable for the requirements of human eyes, and the use comfort degree of the helmet is improved.

Among them, the driving power supply 3 may be a dry battery, a rechargeable battery, a solar battery, or the like.

In an embodiment, as shown in fig. 2, when the driving power source 3 is a dry battery or a rechargeable battery, the dimmable helmet may further include a controller 6 electrically connected to the battery and a light sensor 5 electrically connected to the controller 6, and the controller 6 is configured to adjust the driving voltage output by the battery according to a sensing signal of the light sensor 5.

In this embodiment, the light sensor 5 is disposed on the helmet body 1 or the sunshade lens 2, and the light-sensitive surface thereof faces the outer side of the sunshade lens 2 to sense the intensity of light emitted to the sunshade lens 2. The light sensor 5 is used for sensing the intensity of light and transmitting a sensing signal to the controller 6, and the controller 6 correspondingly controls the output voltage of the driving power supply 3 according to the sensing signal. The light transmittance of the liquid crystal dimming film 4 is adjusted by controlling the change of the driving voltage, that is, controlling the deflection angle of the liquid crystal molecules in the liquid crystal dimming film 4. Therefore, the light sensor 5 and the controller 6 can control the driving voltage output by the driving power supply 3 and the light transmittance of the liquid crystal dimming film 4 accurately.

In another embodiment, as shown in fig. 3, when the driving power source 3 is a dry battery or a rechargeable battery, a touch sensing chip 8 electrically connected to the driving power source 3 and two conductive layers in the liquid crystal dimming film 4 may be further disposed in the dimmable helmet, and the touch sensing chip 8 is configured to collect capacitance variation between the two conductive layers and adjust the driving voltage output by the driving power source 3 according to the capacitance variation. The method specifically comprises the following steps: drive power supply 3 continuously provides the low pressure for liquid crystal membrane of adjusting luminance 4, when human body touch liquid crystal membrane of adjusting luminance 4 surface, because human electric field, form a coupling capacitance between finger and the liquid crystal membrane of adjusting luminance 4, cause the effect of similar ground connection, when the user point-touches on liquid crystal membrane of adjusting luminance 4, the capacitance value produces the change thereupon between two conducting layers, after this change is gathered by touch-control induction chip 8, touch-control induction chip 8 then corresponds loading waveform voltage on two conducting layers, increase the voltage on two conducting layers promptly, make the liquid crystal molecule between two conducting layers 33 deflect thereupon, thereby change liquid crystal membrane of adjusting luminance 4's luminousness.

In another embodiment, as shown in fig. 4, when the driving power source 3 is a dry battery or a rechargeable battery, the dimmable helmet may further include a manual adjustment switch 7, and the manual adjustment switch 7 is disposed on the outer side of the helmet body 1 and electrically connected to the driving power source 3. For the convenience of manual operation of a user, the manual adjusting switch 7 can be arranged on any one of the left side and the right side of the helmet body 1, and the manual adjusting switch 7 can realize adjustment of the driving voltage by adopting a knob, a sliding resistance strip, sliding touch and the like, so that the user can manually adjust the light intensity of the light emitted into the helmet through the manual adjusting switch 7 according to the requirement of the user. Touch-control response chip 8 and manual regulating switch 7 can set up in the helmet simultaneously, and touch-control response chip 8 is used for adjusting the switching between low pressure and the high pressure to lasting low pressure output for example, when touch action trigger drive power supply 3 output high voltage, can further carry out continuous fine setting to the luminousness through manual regulating switch 7, when not triggered output high voltage, then manual regulating switch 7's regulating action is not showing.

Preferably, as shown in fig. 1, the manual adjustment switch 7 is a membrane potentiometer.

The film potentiometer realizes the change of output voltage by pressing the printed electrodes at different positions of the upper layer of the film and conducting the resistance ratio of the printed resistance diaphragm at the lower layer of the film, and in the process, the resistance at two ends cannot change along with the external position, and the working principle of the film potentiometer is the same as that of a common slide rheostat. The film potentiometer volume is less, can attach in helmet body 1 outside, for example the right side, and the user of being convenient for when wearing hand touch is adjusted luminance, and the finger can correspond the size of adjusting driving voltage when the film potentiometer surface slides. The manual regulating switch 7 can also adopt a touch screen to match with a controller to realize touch regulation, the touch screen senses the sliding position of a finger, and the controller correspondingly regulates the output voltage of the driving power supply 3 according to the position information.

In another embodiment, when the driving power source 3 is a solar cell, the driving voltage on the conductive layer of the liquid crystal dimming film 4 is provided by the solar cell, and the solar cell directly converts light energy into electric energy through photoelectric effect when receiving light source irradiation with certain intensity. Since the driving voltage output from the solar cell is different for different light source intensities, the light transmittance exhibited by the liquid crystal light adjusting film 4 is also different. That is to say, the light adjustable helmet adopting the solar battery can automatically adjust the light transmittance of the liquid crystal light adjusting film 4 according to the ambient light intensity, thereby controlling the light intensity entering the eyes of the user after passing through the liquid crystal light adjusting film 4 and the sunshade lens 2.

In this embodiment, the solar cell may be a silicon solar cell or a solar thin film.

Preferably, the driving power source 3 is a transparent solar cell film, the transparent solar cell film is a solar cell in a film form formed by plating a photovoltaic material on a transparent ITO substrate, the transparent solar cell film can be directly attached to the surface of the liquid crystal dimming film 4 or the sunshade lens 2 and is located outside the liquid crystal dimming film 4, the transparent solar cell film can completely cover the whole liquid crystal dimming film 4 or the sunshade lens 2 where the transparent solar cell film is located, and the transparent solar cell film can also be arranged along the outer edge of the liquid crystal dimming film 4 (or the sunshade lens 2 where the transparent solar cell film is located), for example, the transparent solar cell film is circumferentially arranged. The transparent solar energy film directly attached to the liquid crystal dimming film 4 or the surface of the sunshade lens 2 where the liquid crystal dimming film is located does not additionally occupy the installation space, so the appearance is more beautiful. The area of the transparent solar film can be set as required, so that the range of the output driving voltage is controlled.

In a preferred embodiment, the liquid crystal dimming film 4 can be made of various materials, such as: as shown in fig. 5, the liquid crystal dimming film 4 includes a first polarizer 41, a first base layer 42, a first conductive layer 43, a first alignment layer 44, a liquid crystal layer 45, a second alignment layer 46, a second conductive layer 47, a second base layer 48, and a second polarizer 49, which are stacked, polarization directions of the first polarizer 41 and the second polarizer 49 are perpendicular to each other, and the liquid crystal layer 45 is made of one of a TN liquid crystal material, a VA liquid crystal material, an ECB liquid crystal material, and an STN liquid crystal material.

In the present embodiment, the liquid crystal layer 45 is made of TN liquid crystal (twisted nematic liquid crystal) material. The alignment directions of the first and

second alignment layers

44 and 46 are perpendicular to each other for aligning the liquid crystal molecules adjacent to the first and

second matrix layers

42 and 48. The TN liquid crystal is in a 90-degree or nearly 90-degree twisted state in a non-electric or low-electric state and has optical rotation, incident light forms polarized light after passing through the first polarizer 41, the twisted liquid crystal rotates when the polarized light passes through the TN liquid crystal layer 45, and the polarization direction of the polarized light is almost parallel to the polarization direction of the second polarizer 49 when the polarized light leaves the TN liquid crystal layer 45, so that light can pass smoothly, and the liquid crystal dimming film 4 has high light transmittance; when the voltage applied to the first conductive layer 43 and the second conductive layer 47 is relatively large, the optical axis of the TN liquid crystal molecules is deflected in a direction parallel to the electric field, that is, in a direction perpendicular to the substrate layer, at this time, the optical rotation of the liquid crystal disappears, and the polarization direction of the polarized light passing through the first polarizer 41 is hardly changed when passing through the TN liquid crystal layer 45, so that the polarized light is almost perpendicular to the polarization direction of the second polarizer 49, and the light cannot pass through smoothly, so that the liquid crystal dimming film 4 is in an opaque dark state. Therefore, this liquid crystal dimming film 4 can present high light transmittance under low light, present low light transmittance under high light to and present corresponding light transmittance along with the change of driving voltage, therefore can adjust the purpose of the light intensity who passes through liquid crystal dimming film 4 through the driving voltage who changes driving power supply 3 output.

As shown in fig. 6, the liquid crystal dimming film 4 includes a third base layer 410, a third conductive layer 411, a third alignment layer 412, a guest-host effect liquid crystal layer 413, a fourth alignment layer 414, a fourth conductive layer 415, and a fourth base layer 416, which are stacked.

The guest-host liquid crystal layer 413 is preferably made of a negative guest-host liquid crystal material, and when the liquid crystal material is in an electroless or low-electric state, liquid crystal molecules are arranged perpendicular to the third substrate layer 410 and the fourth substrate layer 416 (or arranged at an acute angle with the substrate layers), and incident light can smoothly pass through the liquid crystal dimming film 4. When a higher driving voltage is applied to the third conductive layer 411 and the fourth conductive layer 415, liquid crystal molecules are deflected in a direction parallel to the third base layer 410 and the fourth base layer 416, so that transmittance of incident light is greatly reduced, and the liquid crystal dimming film 4 as a whole exhibits a dark state with low light transmittance. In this embodiment, the light transmittance of the sunshade lens 2 can be changed between 10% and 70%, and the light transmittance adjustable range is relatively wider.

The above is only the part or the preferred embodiment of the present invention, no matter the characters or the drawings can not limit the protection scope of the present invention, all under the whole concept of the present invention, the equivalent structure transformation performed by the contents of the specification and the drawings is utilized, or the direct/indirect application in other related technical fields is included in the protection scope of the present invention.

Claims

1. A dimmable helmet is characterized by comprising a helmet body, a sun-shading lens and a driving power supply, wherein the sun-shading lens and the driving power supply are arranged in the helmet body; the driving power supply is used for outputting driving voltage to the liquid crystal dimming film.

2. The dimmable helmet of claim 1, wherein the driving power source is a rechargeable battery or a dry battery.

3. The dimmable helmet of claim 2, further comprising a controller electrically connected to the driving power supply and a light sensor electrically connected to the controller, wherein the controller is configured to adjust a driving voltage output by the driving power supply according to a sensing signal of the light sensor.

4. The dimmable helmet according to claim 2, further comprising a touch sensing chip electrically connected to the driving power supply and the two conductive layers of the liquid crystal dimming film, wherein the touch sensing chip is configured to collect a capacitance value change between the two conductive layers, and adjust a driving voltage output by the driving power supply according to the capacitance value change.

5. The dimmable helmet of claim 2, further comprising a manual adjustment switch disposed outside the helmet body, the manual adjustment switch being electrically connected to the driving power supply.

6. The dimmable helmet of claim 5, wherein the manual adjustment switch comprises a membrane potentiometer.

7. The dimmable helmet of claim 1, wherein the driving power source comprises a solar cell.

8. The dimmable helmet of claim 7, wherein the driving power supply is a transparent solar film disposed outside the liquid crystal dimming film.

9. The dimmable helmet according to claim 1, wherein the liquid crystal dimming film comprises a first polarizer, a first substrate layer, a first conductive layer, a first alignment layer, a liquid crystal layer, a second alignment layer, a second conductive layer, a second substrate layer and a second polarizer, which are stacked, polarization directions of the first polarizer and the second polarizer are perpendicular to each other, and the liquid crystal layer is made of one of TN liquid crystal material, VA liquid crystal material, ECB liquid crystal material and STN liquid crystal material.

10. The dimmable helmet of claim 1, wherein the liquid crystal dimming film comprises a third substrate layer, a third conductive layer, a third alignment layer, a guest-host effect liquid crystal layer, a fourth alignment layer, a fourth conductive layer, and a fourth substrate layer in a stacked arrangement.