Shield capable of changing color and helmet including same

Abstract

The present invention relates to a shield capable of changing color and a helmet including same. The shield capable of changing color, according to the present invention, includes: a protection unit for protecting the face of a user and formed transparent so as not to disturb the sight of the user; a light control unit attached to the protection unit in the form of a film and changing its color when power is supplied, to selectively block light passing through the protection unit and reaching the eyeballs of the user; and a control unit for controlling the amount of light blocked by the light control unit by adjusting the power supplied to the light control unit.

Description

Color-changing shield and helmet including same

[0001] The present invention relates to a color-changing shield and a helmet including the same, and more particularly, to a color-changing shield that can selectively block light shining into a user's eyes by changing color when power is supplied, and a helmet including the same.

[0002] According to the prior art, as shown in Fig. 1, a helmet is formed such that the front part of the body (1) facing the user's face is open, and a shield (2) that covers the open front part to protect the user's face is rotatably mounted by a ratchet (4).

[0003] These shields (2) are usually formed transparently so as not to obstruct the user's view. However, since they are formed transparently, there are cases where safety accidents occur due to glare caused by strong light shining on a clear day.

[0004] To prevent such safety accidents, a light-blocking film has been attached to the shield (2), or the helmet (1) has been configured to have a separate sun visor between the shield (2) and the user's face.

[0005] However, in the case of attaching a light blocking film to the shield (2) as in the past, in cases where there is little light, such as at night or in rainy weather, the field of vision is not sufficiently secured, so the user has no choice but to rotate the shield (2) to use it with the front of the body (1) open, and as a result, the protective function of the shield (2) cannot be used, which has the problem of causing more safety accidents.

[0006] In addition, when the helmet (1) is configured to have a separate sun visor between the shield (2) and the user's face as in the past, there is no problem as described above, but there is another problem in that there is a limit to the implementation of helmet weight reduction due to the addition of a complex structure for operating the sun visor inside the helmet.

[0007] Accordingly, the applicant intends to solve the above-mentioned problems by improving the shield (2) and the helmet including the same according to the prior art through the present invention.

[0008] The present invention is an invention devised to solve the problems of the above-mentioned prior art, and the problem to be solved through the present invention is to provide a color-changing shield that can selectively block light shining on a user's eyes by changing color when power is supplied, and a helmet including the same.

[0009] The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0010] A color-changing shield according to the present invention for solving the above-described problem may be configured to include: a protective part formed transparently so as to protect a user's face while not obstructing the user's field of vision; a light-controlling part attached to the protective part in the form of a film and selectively blocking light passing through the protective part and shining on the user's eyes when power is supplied; and a control part that controls the amount of light blocked by the light-controlling part by controlling the power supplied to the light-controlling part.

[0011] Here, the light control unit may be configured to change color at a preset rate so that the user can adapt to photoacclimatization or dark adaptation that occurs when light is blocked or unblocked.

[0012] At this time, the preset speed may be a speed set in advance by adjusting the change in the size of the power supplied to the light control unit in response to the degree of light adaptation or dark adaptation of the user.

[0013] Meanwhile, the light control unit may be configured so that each divided area formed by dividing the protection unit in the vertical or horizontal direction can be independently discolored.

[0014] In addition, the protective part may be configured as a plate that is curved to be symmetrical to the left and right with respect to the center of the user's face.

[0015] Here, the control unit can be placed on either the left or right side of the plate constituting the protection unit.

[0016] At this time, the color-changing shield according to the present invention may further include a balancer having a shape and weight corresponding to the control unit at an end opposite to one of the left and right sides of the plate on which the control unit is disposed.

[0017] In addition, the control unit may be configured to be divided and arranged on the left and right side ends of the plate constituting the protection unit, with a first switch for selecting on / off of power supply to the light control unit being arranged on one side, and a second switch for selecting the amount of power supplied to the light control unit being arranged on the other side.

[0018] Meanwhile, the color-changing shield according to the present invention may further include a sensor unit that senses the brightness of the surroundings so that the control unit can control the amount of light blocked by the light control unit according to the brightness of the surroundings.

[0019] And, a helmet according to the present invention for solving the aforementioned problem may be configured to include a body that covers a user's head; and a color-changing shield as described above that is detachably mounted on the body.

[0020] Here, the shield capable of changing color may be configured such that the protective part is formed of a plate that is curved so that the left and right sides are symmetrical with respect to the central part of the body, and the control part is arranged on either the left or right side end of the plate that constitutes the protective part.

[0021] Additionally, the discolorable shield may be configured to be placed inside the body, separated from the protection unit, while the control unit is electrically connected to the light control unit.

[0022] Meanwhile, the helmet according to the present invention may further include a sensor unit that senses the brightness of the surroundings so that the control unit can control the amount of light blocked by the light control unit according to the brightness of the surroundings.

[0023] At this time, the sensor unit may be configured to be located at either the left or right side of the plate when the protective portion of the color-changing shield is configured as a plate that is curved to be symmetrical to the left and right with respect to the center of the body.

[0024] Additionally, the sensor unit may be configured to be located at the upper center of the body.

[0025] According to the present invention, a color-changing shield and a helmet including the same, which are presented as solutions as described above, have the effect of selectively blocking light shining on the user's eyes by changing color when power is supplied.

[0026] The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

[0027] Figure 1 is a perspective view illustrating an example of a conventional helmet that does not include a color-changing shield.

[0028] FIG. 2 is a perspective view illustrating one embodiment of a color-changing shield according to the present invention.

[0029] FIG. 3 is a front view illustrating an example of an embodiment of a color-changing shield according to the present invention in operation.

[0030] FIG. 4 is a front view illustrating another example of operation of an embodiment of a color-changing shield according to the present invention.

[0031] FIG. 5 is a front view illustrating another example of operation of an embodiment of a color-changing shield according to the present invention.

[0032] FIG. 6 is a partial cross-sectional view showing an enlarged view of a control unit of an embodiment of a color-changing shield according to the present invention when mounted on a helmet.

[0033] Fig. 7 is a partial cross-sectional view illustrating a first modified example of the control unit illustrated in Fig. 6.

[0034] Fig. 8 is a partial cross-sectional view illustrating a second modified example of the control unit illustrated in Fig. 6.

[0035] Fig. 9 is a partial cross-sectional view illustrating a third modified example of the control unit illustrated in Fig. 6.

[0036] FIG. 10 is a perspective view illustrating one embodiment of a helmet according to the present invention including one embodiment of a color-changing shield according to the present invention.

[0037] FIG. 11 is a front view showing one embodiment of a helmet according to the present invention illustrated in FIG. 10.

[0038] Fig. 12 is a front view showing a modified example of one embodiment of a helmet according to the present invention.

[0039] Figure 13 is a front view showing another modified example of one embodiment of a helmet according to the present invention.

[0040] FIG. 14 is a graph depicting the process of a light control unit changing color over time to explain the operation of a control unit of one embodiment of a color-changing shield according to the present invention.

[0041] <Explanation of symbols>

[0042] 1: Body 2: Shield

[0043] 4: Ratchet

[0044] 10: Body 20: Shield

[0045] 30: Sensor part 40: Ratchet

[0046] 100: Protective part 120: Detachable part

[0047] 200: Light control unit 300: Control unit

[0048] 320: 1st switch 340: 2nd switch

[0049] 400: Balanced part 500: Sensor part

[0050] The technical features and effects of the present invention will become more apparent from the detailed description of the embodiments below based on the attached drawings.

[0051] Prior to this, the terms and words used in this specification and claims should be interpreted as meanings and concepts that conform to the technical idea of ​​the present invention, based on the principle that the inventor can appropriately define the concept of the term to explain his or her own invention in the best way.

[0052] Additionally, the terms and words used in this specification and claims are used only to describe specific embodiments and are not intended to limit the present invention.

[0053] For example, a singular expression includes a plural expression unless the context clearly indicates otherwise. In addition, it should be understood that terms such as "comprises," "includes," or "has" specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0054] Furthermore, when we say that a layer, membrane, region, board, or other part is "above" another part, this includes not only cases where it is "directly above" the other part, but also cases where there are other parts in between. Conversely, when we say that a layer, membrane, region, board, or other part is "beneath" another part, this includes not only cases where it is "directly below" the other part, but also cases where there are other parts in between.

[0055] Additionally, terms including ordinal numbers such as “first,” “second,” etc. used in this specification may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another.

[0056] First, referring to FIGS. 2 to 5, the configuration and operation of one embodiment of a color-changing shield according to the present invention will be described.

[0057] Here, FIG. 2 is a perspective view illustrating one embodiment of a color-changing shield according to the present invention, FIG. 3 is a front view illustrating one example of operation of one embodiment of a color-changing shield according to the present invention, FIG. 4 is a front view illustrating another example of operation of one embodiment of a color-changing shield according to the present invention, and FIG. 5 is a front view illustrating another example of operation of one embodiment of a color-changing shield according to the present invention.

[0058] As illustrated in FIGS. 2 to 5, one embodiment of a color-changing shield according to the present invention comprises a protection unit (100), a light control unit (200), and a control unit (300).

[0059] Here, the protective member (100) is configured to be transparent so as to protect the user's face while not obstructing the user's view. Since one embodiment of the color-changing shield according to the present invention can be mounted on helmets having various shapes and structures, its shape and structure can also be varied, and it is obvious that the scope of the rights is not limited due to this.

[0060] However, for a more detailed explanation, if one embodiment of the color-changing shield according to the present invention is applied to a motorcycle helmet as an example, the protective part (100) can be formed as a plate that is curved to be symmetrical to the left and right with respect to the center of the user's face.

[0061] The reason why the protection member (100) is formed as a curved plate so that it is symmetrical on both the left and right is to enhance aesthetics, but it also has the purpose of minimizing wind resistance that is relatively experienced when driving a motorcycle.

[0062] At the left and right ends of the protective part (100) formed with a curved plate in this way, a detachable part (120) corresponding to the structure of the ratchet (40) may be formed so that the protective part (100) can be detachably attached to the body (10) constituting the helmet while being rotatably mounted by a hinge-shaped ratchet (40).

[0063] Meanwhile, the light control unit (200) is configured to selectively block light that passes through the protection unit (100) and shines on the user's eyes by changing color when power is supplied, and can be attached to the protection unit (100) in the form of a film.

[0064] At this time, the light control unit (200) may be attached to the outer surface corresponding to the opposite direction of the user's face relative to the protection unit (100), but it is advantageous to attach it to the inner surface corresponding to the direction of the user's face relative to the protection unit (100) in order to prevent durability from being reduced due to rain, wind, etc. applied from the outside.

[0065] However, it is not limited thereto, and the light control unit (200) may be inserted in the form of a core when forming the protection unit (100) and attached in the form of a film inside the protection unit (100) between the outer and inner surfaces described above, and may be attached to the protection unit (100) in various forms, and the scope of rights is not limited due to this.

[0066] This light control unit (200) may be discolored under any conditions and settings as long as it can be discolored when power is supplied so as to selectively block light shining on the user's eyes, but it is obvious that the discoloration should not obstruct the user's view.

[0067] That is, even if the color changes, there should never be a problem for the user to recognize objects in front, and further, it is advantageous to change the color at a preset speed so that the user can adapt to light adaptation or dark adaptation that occurs when light is blocked or unblocked.

[0068] That is, if light is abruptly blocked without considering the adaptation time (dark adaptation time) required for the optic nerve cells of the user's eye to be activated in a low-light environment, or conversely, if light blocking is abruptly released without considering the adaptation time (light adaptation time) required for the optic nerve cells of the user's eye to be activated in a high-light environment, the user will experience a phenomenon of momentary blindness. Therefore, to prevent this, it is advantageous to allow the light control unit (200) to change color at a preset speed.

[0069] Here, the preset speed can be set in advance in various ways. For example, the preset speed can be set in advance by adjusting the change in the size of the power supplied to the light control unit (200) in response to the user's degree of light adaptation or dark adaptation.

[0070] At this time, since the degree of light adaptation or dark adaptation will be different for each user, the control unit (300) described below can be set so that the user can directly adjust the intensity of the current or the size of the voltage supplied to the light control unit (200) before using one embodiment of the color-changing shield according to the present invention.

[0071] Such a light control unit (200) can be configured so that each divided area formed by dividing the protection unit (100) in the vertical or horizontal direction can be independently discolored.

[0072] That is, the light control unit (200) may be configured to discolor as a whole so that the front of the protection unit (100) has the same brightness as shown in FIG. 3, but may be configured to discolor in a divided manner so that it has a brightness that is graded up and down based on the protection unit (100) as shown in FIG. 4, or may be configured to discolor in a divided manner so that it has a brightness that is graded left and right-center based on the protection unit (100) as shown in FIG. 5.

[0073] In particular, as shown in Fig. 4, if the light control unit (200) is configured to change color by dividing it to have a brightness that is gradiented upward and downward based on the protection unit (100), the effect of blocking sunlight will be better around noon when the meridian altitude is high depending on the position of the sun.

[0074] In addition, as shown in Fig. 5, if the light control unit (200) is configured to change color by dividing it to have a brightness gradient from left to right to the center based on the protection unit (100), the effect of blocking sunlight will be better when sunlight shines from the left and right when riding a motorcycle in a high altitude place such as a mountain.

[0075] As described above, the light control unit (200) has no restrictions on the method or materials constituting the light control unit (200) as long as it changes color when power is supplied, and the scope of rights is not limited due to this.

[0076] However, for a more detailed explanation, an example of a material that constitutes the light control unit (200) to change color when power is supplied is described below.

[0077] The light control unit (200) may be composed of a reduction-colored electrochromic material that exhibits color when reduced or an oxidation-colored electrochromic material that exhibits color when oxidized, in order to change color when power is supplied.

[0078] At this time, the reduction coloring material may be composed of inorganic metal oxides such as WO3, MoO3, TiO2, Nb2O5 or organic polymer materials such as polyaniline, polythiophene polybiogen, polypyrrole, polycarbazole, biologic, and conductive polymers, and the oxidation coloring material includes transition metal oxides such as Ir2O3, Rh2O3, Co3O4, Fe2O3, Cr2O3, V2O5, NiO and inorganic electrochromic materials such as Prussian blue, Prussian blue analogues, and phthalocyanine.

[0079] In electrochromic materials that can be composed in various ways, using organic materials has the advantage of allowing for a variety of colors, but has the disadvantage of poor durability, and using inorganic materials has the advantage of excellent durability, but has the disadvantage of limited colors, so appropriate coordination is necessary.

[0080] In particular, the amount and ratio of each component included in the light control unit (200) can be configured differently depending on the specific use of the helmet and the degree of light blocking in the light control unit (200).

[0081] For example, it may be composed of 1 to 50 parts by weight of NiO particles, 1 to 20 parts by weight of an inorganic additive, 1 to 10 parts by weight of a binder, and 50 to 94 parts by weight of a polar solvent.

[0082] Meanwhile, the control unit (300) is configured to control the amount of light blocked by the light control unit (200) by controlling the power supplied to the light control unit (200). The method of controlling the amount of light and the effect thereof may be various, and it is obvious that the scope of rights is not limited due to this.

[0083] For example, when the surroundings are too bright, by supplying power to the light control unit (200), the light control unit (200) can be discolored in a direction that increases the amount of light blocked, thereby darkening the transparent protective unit (100). Conversely, when the surroundings that were bright become dark again, by partially or completely blocking the power supplied to the light control unit (200), the light control unit (200) can be discolored in a direction that reduces the amount of light blocked, thereby darkening the protective unit (100) that was darkened, thereby making it transparent again.

[0084] The control unit (300) that controls the amount of light blocked by the control unit (200) in this way may be configured to automatically control the power supplied to the light control unit (200), or may be configured to control the power supplied to the light control unit (200) when the user manually operates a specific switch according to the user's intention.

[0085] At this time, in order to configure the control unit (300) to automatically control the power supplied to the light control unit (200), it is advantageous for one embodiment of the color-changing shield according to the present invention to further include a sensor unit (500) that senses the brightness of the surroundings.

[0086] That is, when the surrounding brightness information sensed through the sensor unit (500) is transmitted to the control unit (300), the control unit (300) can automatically adjust the amount of light blocked by the light control unit (200) according to a preset algorithm regarding the correlation between the surrounding brightness and the amount of light blocked by the light control unit (200).

[0087] Of course, the user may be aware of the need to adjust the power supplied to the light control unit (200) by providing the user with the ambient brightness information sensed through the sensor unit (500) and manually adjust a specific switch, but the user does not necessarily need to make this decision based on the ambient brightness information sensed through the sensor unit (500).

[0088] This sensor unit (500) may be placed adjacent to the control unit (300) on the left and right ends of the protection unit (100) formed in the shape of a plate that is curved to be symmetrical to the left and right, as shown in FIG. 13 described later, but is not limited thereto.

[0089] That is, as described later, in the case where the control unit (300) of one embodiment of the color-changing shield according to the present invention is located inside the body (10) constituting the helmet, spaced apart from the light control unit (200), more specifically, when located between the portion constituting the outer shape of the body (10) and the portion of the interior material that comes into contact with the user's face, as illustrated in FIG. 12 to be described later, the sensor unit (30) - in FIG. 12, since the position of the sensor unit is different compared to FIG. 13, the reference numeral for the sensor unit is indicated as 30 instead of 500, but in fact, the sensor unit is referred to in the same way. - may be located at the upper center of the body (10).

[0090] In addition, since the control unit (300) is configured to control the supply of power to the light control unit (200), it is also connected to a power source (not shown) that supplies power, and can perform operations related to the power source (not shown), such as checking the degree to which the power source (not shown) is charged through the charging line (C) and informing the user of the same.

[0091] Such a control unit (300) may be formed in a shape and structure as shown in FIG. 6, and this shape and structure may be modified to a shape and structure as shown in FIG. 7 or FIG. 8, and may also be formed in a shape and structure located inside the body (10) constituting the helmet, spaced apart from the light control unit (200), as shown in FIG. 9.

[0092] Here, FIG. 6 is a partial cross-sectional view showing an enlarged view of a control unit when one embodiment of a color-changing shield according to the present invention is mounted on a helmet, FIG. 7 is a partial cross-sectional view showing a first modified example of the control unit shown in FIG. 6, FIG. 8 is a partial cross-sectional view showing a second modified example of the control unit shown in FIG. 6, and FIG. 9 is a partial cross-sectional view showing a third modified example of the control unit shown in FIG. 6.

[0093] At this time, as shown in FIGS. 6 to 8, the control unit (300, 300', 300'') may be modified according to the size or shape of the ratchet (40) that allows one embodiment of the color-changing shield according to the present invention to be rotatably mounted on the body (10) constituting the helmet, or may be modified according to the size or shape of the first switch (320) that selects on-off of the power supply to the light control unit (200).

[0094] That is, as illustrated in FIG. 6, the control unit (300) may be configured as one piece with the detachable unit (120) corresponding to the ratchet (40), and as illustrated in FIG. 7, the control unit (300') may be configured in a form that fits into the space between the open portion of the body (10) constituting the helmet and the ratchet (40), and as illustrated in FIG. 8, the control unit (300'') may be configured in a form larger than the space between the open portion of the body (10) constituting the helmet and the ratchet (40).

[0095] In this way, the control unit (300, 300', 300'') as shown in FIGS. 6 to 8 can be placed on either the left or right side of the plate constituting the protection unit (100).

[0096] In this case, in order to resolve inconvenience that may occur when the control unit (300, 300', 300'') is located at one end, a balance unit (400) may be further included, which will be described later.

[0097] In addition, the control unit (300''') as shown in FIG. 9 may be formed in a shape and structure that is located inside the body (10) constituting the helmet, spaced apart from the light control unit (200). In this case, the first switch (320) that selects on-off of the power supply to the light control unit (200) may be placed not near the ratchet (40), but on the lower side of the body (10) constituting the helmet, that is, near the part where the user's head enters.

[0098] However, when configuring the control unit (300''') in this way, the connection line (360) for electrical connection of the light control unit (200) must be arranged between the part forming the outer shape of the body (10) and the part of the interior material that comes into contact with the user's face. Therefore, when implementing only one embodiment of the color-changing shield according to the present invention, it may be somewhat inconvenient. However, when implementing a helmet including one embodiment of the color-changing shield according to the present invention, it may be advantageous in that the first switch (320) can be arranged at a desired position on the body (10) of the helmet.

[0099] One embodiment of the color-changing shield according to the present invention as described above may be implemented alone as described above, but may also be implemented as one embodiment of a helmet according to the present invention.

[0100] That is, one embodiment of a helmet capable of changing color according to the present invention may be configured to include a body (10) that surrounds a user's head, as illustrated in FIGS. 10 to 13, and a shield (20) capable of changing color as one embodiment of the present invention described above, which is detachably mounted on the body (10).

[0101] Here, FIG. 10 is a perspective view illustrating an embodiment of a helmet according to the present invention including an embodiment of a color-changing shield according to the present invention, FIG. 11 is a front view illustrating an embodiment of a helmet according to the present invention illustrated in FIG. 10, FIG. 12 is a front view illustrating a modified example of an embodiment of a helmet according to the present invention, and FIG. 13 is a front view illustrating another modified example of an embodiment of a helmet according to the present invention.

[0102] That is, as shown in FIGS. 10 and 13, one embodiment of a helmet according to the present invention can be mounted on a body (10) that surrounds a user's head, and a color-changing shield (20) as described above can be detachably mounted while being rotatable by a ratchet (40).

[0103] At this time, the control unit (300) may be mounted on only one side of the protection unit (100) as shown in FIG. 11, may be mounted on both sides of the protection unit (100) as shown in FIG. 12 or FIG. 13, and may be mounted spaced apart from the protection unit (100) as described above.

[0104] That is, if the control unit (300) has the function of controlling the amount of light blocked by the light control unit (200), there is no limitation on its location, and therefore, it is obvious that the scope of rights is not limited.

[0105] However, for a more detailed explanation, as an example, as shown in FIG. 11, the control unit (300) may be mounted together with a power source (not shown) on only one side of the protection unit (100), but due to the weight of the control unit (300) and the power source (not shown), the center of gravity of one embodiment of the helmet according to the present invention may deviate from the center, causing some discomfort to the user.

[0106] In order to resolve this inconvenience, a balance unit (400) having a shape and weight corresponding to the control unit (300) - at this time, a power source (not shown) connected to the control unit (300) may also be included - may be provided on the other side of the protection unit (100).

[0107] In addition, the control unit (300) may be mounted on both sides of the protection unit (100) as shown in FIG. 12. When the control unit (300) is mounted in this manner, the control unit (300) located on one side may be equipped with a first switch (320) that selects on / off the power supply to the light control unit (200), and the control unit (300) located on the other side may be equipped with a second switch (340) that selects the amount of power supplied to the light control unit (200) and adjusts the degree of discoloration.

[0108] At this time, the first switch (320) may be configured as a switch that is physically pressed or touched to select on-off, and the second switch (340) may be configured as a dimmer switch to select the size in steps.

[0109] In particular, when the second switch (340) is configured in the form of a dimmer, any form may be used as long as the degree of discoloration can be controlled by selecting the amount of power supplied to the light control unit (200), such as a rotary dimmer that is selected by a rotational method, a slide dimmer that is selected by a sliding method, a touch dimmer that is selected by the number of touches, or a smart dimmer that is selected by recognizing the user's voice command.

[0110] In this way, the purpose of bending the first switch (320) and the second switch (340) is to prevent the user from making the mistake of accidentally turning the power supply to the light control unit (200) on and off while trying to select the amount of power supplied to the light control unit (200).

[0111] In addition, the positions of the first switch (320) and the second switch (340) can be changed according to the user's choice regardless of whether the user is right-handed or left-handed.

[0112] Meanwhile, as described above, the first switch (320) and the second switch (340) may be configured to turn on / off the power supply to the light control unit (200) or select the amount of power supplied to the light control unit (200) by simply repeatedly touching the divided areas when the light control unit (200) is formed by including divided areas vertically or horizontally divided into the protection unit (100), and the structure thereof may be diverse as long as the first switch (320) and the second switch (340) can perform their functions, and the scope of the rights is not limited thereby.

[0113] Meanwhile, as described above, the sensor unit (30, 500) that senses the surrounding brightness and helps the control unit (300) control the amount of light blocked by the light control unit (200) may be located at the upper center of the body (10) as shown in FIG. 12, or may be located at one or both sides of the left and right side ends of the protection unit (100) near the control unit (300) as shown in FIG. 13, or may be located at one or both sides of the upper center of the body (10) and the left and right side ends of the protection unit (100) although not shown.

[0114] One embodiment of the helmet capable of color change according to the present invention configured as described above is configured such that the light control unit (200) changes color at a preset speed so that the user can adapt to photoacclimatization or dark adaptation that occurs when light is blocked or unblocked, so as not to obstruct the user's view due to color change as described above.

[0115] For example, as shown in Fig. 14, rather than coloring the light so that the transmittance decreases immediately when power is applied to the light control unit (200), the color can be controlled through the control unit (300) to gradually color the light for up to 13 seconds after power is applied.

[0116] At this time, the power supplied through the control unit (300) may be 0.3 to 0.4 mWh considering the capacity of the power source (not shown), and the voltage driven for this purpose may be 1.0 to 3 V, and the current per hour may be 0.1 to 0.2 mAh.

[0117] Conversely, although not shown, it is natural that the control unit (300) can be controlled so that the transmittance increases not immediately when the power applied to the light control unit (200) is cut off, but rather after a predetermined period of time has passed since the power is cut off, so an explanation of this will be omitted.

[0118] Above, although the embodiments of the present invention have been described with reference to the drawings, various modifications and changes can be made without departing from the spirit or scope of the present invention as defined by the following claims, and this should also be included in the scope of the present invention.

Claims

1. A protective member formed transparently so as to protect the user's face while not obstructing the user's field of vision; A light control unit attached in the form of a film to the above protective part, which changes color when power is supplied and selectively blocks light passing through the protective part and shining on the user's eyes; and A color-changing shield, comprising a control unit that controls the amount of light blocked by the light control unit by controlling the power supplied to the light control unit.

2. In the first paragraph, the light control unit, A color-changing shield characterized in that it changes color at a preset rate so that the user can adapt to photo-adaptation or dark adaptation that occurs when light is blocked or unblocked.

3. In the second paragraph, the preset speed is A color-changing shield characterized in that the change in the size of the power supplied to the light control unit is adjusted to a pre-set speed in response to the degree of light adaptation or dark adaptation of the user.

4. In the first paragraph, the light control unit, A discolorable shield, characterized in that each of the divided areas formed by dividing the above protective part in the vertical or horizontal direction is independently discolored.

5. In paragraph 1, the protective part, A color-changing shield characterized by being composed of plates that are curved symmetrically to the left and right with respect to the center of the user's face.

6. In paragraph 5, the control unit, A discolorable shield characterized in that it is placed on either the left or right side of the plate constituting the above protection part.

7. In paragraph 6, A color-changeable shield further comprising a balancer having a shape and weight corresponding to the control unit, at an end opposite to one of the left and right sides of the plate on which the control unit is disposed.

8. In paragraph 6, the control unit, A color-changing shield characterized in that the shield is divided and arranged on the left and right sides of the plate constituting the protection unit, and a first switch for selecting on / off of power supply to the light control unit is arranged on one side, and a second switch for selecting the amount of power supplied to the light control unit is arranged on the other side.

9. In paragraph 1, A color-changing shield further comprising a sensor unit that senses the brightness of the surroundings so that the control unit can control the amount of light blocked by the light control unit according to the brightness of the surroundings.

10. A body that surrounds the user's head; and A helmet comprising a color-changing shield according to claim 1, which is detachably mounted on the body.

11. In the 10th paragraph, the shield capable of changing color is A helmet characterized in that the protective part is formed of a plate that is curved to be symmetrical to the left and right with respect to the center of the body, and the control part is placed on one of the left and right side ends of the plate forming the protective part.

12. In the 10th paragraph, the shield capable of changing color is A helmet characterized in that the control unit is electrically connected to the light control unit and is disposed inside the body while being separated from the protection unit.

13. In paragraph 10, A helmet further comprising a sensor unit that senses the brightness of the surroundings so that the control unit can control the amount of light blocked by the light control unit according to the brightness of the surroundings.

14. In the 13th paragraph, the sensor part, A helmet characterized in that the protective part of the shield capable of changing color is formed of a plate that is curved to be symmetrical on the left and right sides with respect to the center of the body, and is located at one of the left and right side ends of the plate.

15. In the 13th paragraph, the sensor part, A helmet characterized in that it is located in the upper center of the body.

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