Road stud

Abstract

According to one embodiment of the present invention, the device may include a support case portion having an internal installation groove, a light emitting portion seated on the upper part of the installation groove and equipped with an LED module to emit light, a solar cell portion supplying energy to the light emitting portion, and a light-transmitting case portion coupled to the support case portion to seal the installation groove and through which light emitted from the LED module is transmitted.

Description

Technology Field

[0001] The present invention relates to road markers, and more specifically, to road markers that use lighting to visually guide road boundaries, lanes, and road directions so that a driver can safely drive on the road in low-light environments such as at night or in tunnels, or in situations where visibility is limited due to weather conditions such as fog or rain. Background Technology

[0003] Generally, on roads where vehicles travel, two-way traffic and lane-direction traffic are carried out based on lanes. Guide rails or road markers are installed along the lanes to delineate the center line, and this is a traffic safety facility that assists in safe driving by clearly defining lane boundaries to prevent vehicles from deviating from the lane while driving.

[0004] Road markers perform the function of enabling drivers to clearly distinguish the position of road lanes by reflecting light emitted from vehicles or by illuminating with LED lights during nighttime driving.

[0005] In particular, in the case of road markers using LED lighting, they guide drivers to lanes using refracted light; however, due to limitations in the angle, amount, and illuminance of the refracted light, the visibility for recognizing lanes is poor, resulting in a lack of economic efficiency and safety.

[0006] The background technology of the present invention is disclosed in Korean Registered Patent Publication No. 10-1971032 (Registered on April 16, 2019, Title of Invention: Road Marker). The problem to be solved

[0008] The purpose of the present invention is to provide a road marker that reduces the accident rate by using lighting to visually guide road boundaries, lanes, and road directions, enabling drivers to drive safely in low-light environments such as at night or in tunnels, or in situations where visibility is limited due to weather conditions such as fog or rain. means of solving the problem

[0010] According to one embodiment of the present invention, the device may include a support case portion having an internal installation groove, a light emitting portion seated on the upper part of the installation groove and equipped with an LED module to emit light, a solar cell portion supplying energy to the light emitting portion, and a light-transmitting case portion coupled to the support case portion to seal the installation groove and through which light emitted from the LED module is transmitted.

[0011] The light-transmitting case part may include a light-transmitting case coupling part coupled to the support case part, and a light-transmitting part connected to the upper part of the light-transmitting case coupling part through which light passes.

[0012] The light-transmitting part is connected to the light-transmitting case coupling part and may include a first light-transmitting part through which light passes, and a second light-transmitting part provided at the center of the first light-transmitting part and guiding sunlight to be incident in the direction of the solar cell part.

[0013] The first light-emitting portion may include a first curved portion formed in an inner direction facing the LED module and into which light is incident, and a second curved portion formed in an outer direction of the first curved portion and into which the light incident on the first curved portion is emitted.

[0014] The distance x between the first curvature portion and the LED module may be in the range of 0mm < x < 3mm.

[0015] The angle a between the above LED module and the bottom surface may be in the range of 20° ≤ a ≤ 45°.

[0016] The second light-emitting part may be provided in a flat plate shape.

[0017] The above second light-emitting unit may include a light-concentrating lens unit that concentrates sunlight.

[0018] The light emitting unit may include a light emitting substrate coupled to the upper part of the support case unit and connected to the solar cell unit, and an LED module connector connecting the light emitting substrate and the LED module.

[0019] The above LED module may include a first LED module that emits light in a first direction and a second LED module that emits light in a second direction opposite to the first direction.

[0020] The above LED module connector may include a first module connector connecting the first LED module and the light-emitting substrate, and a second module connector connecting the second LED module and the light-emitting substrate.

[0021] The first light-emitting unit may include a first-1 light-emitting unit provided in an area connected to the light-emitting case coupling unit, through which light emitted from the first LED module passes and moves, and a first-2 light-emitting unit provided in an area connected to the light-emitting case coupling unit, through which light emitted from the second LED module passes and moves.

[0022] The above support case portion may include a support case coupling portion having the installation groove portion in the center and the light-transmitting case coupling portion coupled to the outer surface, and a support case seating portion connected to the lower part of the support case coupling portion and supporting the support case coupling portion by contacting the bottom surface.

[0023] The above-mentioned installation groove may include a light-emitting substrate coupling part to which the light-emitting part is coupled, and a solar cell coupling part to which the solar cell part is coupled.

[0024] The above support case seating portion may be provided with a support case insertion portion into which the end of the light-transmitting case coupling portion is inserted.

[0025] The light-transmitting case can parallelize the light emitted from the LED module to generate parallel light rays. Effects of the invention

[0027] According to the present invention, the accident rate can be reduced by using lighting to visually guide the boundaries of the road, lanes, and the direction of the road so that the driver can drive safely in environments with low illumination, such as at night or in tunnels, or in situations where visibility is limited due to weather conditions such as fog or rain. Brief explanation of the drawing

[0029] FIG. 1 is a drawing illustrating the assembly of a road marker according to one embodiment of the present invention. FIG. 2 is a diagram showing an exploded view of a road marker according to one embodiment of the present invention. FIG. 3 is a perspective view of a light-transmitting case portion of a road marker according to one embodiment of the present invention. FIG. 4 is a cross-sectional view of FIG. 3, illustrating an embodiment of a light-transmitting case part of a road marker according to an embodiment of the present invention. FIG. 5 is a cross-sectional view of FIG. 3, illustrating another embodiment of the light-transmitting case part of a road marker according to one embodiment of the present invention. FIG. 6 is a perspective view of a support case portion of a road marker according to one embodiment of the present invention. FIG. 7 is a cross-sectional view of a support case portion of a road marker according to one embodiment of the present invention. FIG. 8 is a drawing illustrating an embodiment of a light-emitting part of a road marker according to an embodiment of the present invention. FIG. 9 is a drawing illustrating another embodiment of the light-emitting part of a road marker according to one embodiment of the present invention. FIGS. 10 and 11 are drawings illustrating an example of operation of another embodiment of the light-emitting part of a road marker according to one embodiment of the present invention. FIG. 12 is a cross-sectional view of an assembly of a road marker according to one embodiment of the present invention. FIG. 13 is a drawing illustrating an example of light emission according to the curvature of the first and second curved portions of the light-transmitting case portion of a road marker according to one embodiment of the present invention. FIG. 14 is a diagram illustrating the illuminance distribution and light intensity distribution of a road marker according to an embodiment of the present invention shown in FIG. 13. Specific details for implementing the invention

[0030] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings. Instead, based on the principle that the inventor may appropriately define the concepts of terms to best describe his invention, they should be interpreted in a meaning and concept consistent with the technical spirit of the present invention. Therefore, it should be understood that the embodiments described in this specification and the configurations illustrated in the drawings are merely some of the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention; thus, various equivalents and modifications that can replace them may exist at the time of filing this application. Furthermore, as used in this specification, "comprise" or "include" and / or "comprising" or "including" specify the presence of the mentioned features, numbers, steps, actions, parts, elements, and / or groups thereof, and do not exclude the presence or addition of one or more other features, numbers, actions, parts, elements, and / or groups. In addition, when describing embodiments of the present invention, "may" and "may be" may include "one or more embodiments of the present invention."

[0031] Additionally, to aid in understanding the invention, the attached drawings are not drawn to actual scale, and the dimensions of some components may be exaggerated. Furthermore, the same reference numerals may be assigned to identical components in different embodiments.

[0032] The statement that two subjects of comparison are 'identical' means that they are 'substantially identical.' Therefore, substantial identity may include deviations considered low in the industry, for example, deviations within 5%. Additionally, the statement that a parameter is uniform in a given area may mean that it is uniform from an average perspective.

[0033] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless specifically stated otherwise, the first component may also be the second component.

[0034] Throughout the specification, unless specifically stated otherwise, each component may be singular or plural.

[0035] The fact that any configuration is placed on the "upper (or lower)" of a component or on the "upper (or lower)" of a component may mean not only that any configuration is placed in contact with the upper (or lower) surface of said component, but also that another configuration may be interposed between said component and any configuration placed on (or below) said component.

[0036] Furthermore, where it is stated that one component is "connected," "coupled," or "connected" to another component, it should be understood that while said components may be directly connected or connected to each other, another component may be "interposed" between each component, or that each component may be "connected," "coupled," or "connected" through another component. Additionally, when it is stated that a part is electrically connected to another part, this includes not only cases where they are directly connected but also cases where they are connected with another component in between.

[0037] Throughout the specification, "A and / or B" means A, B, or A and B unless specifically stated otherwise. That is, "and / or" includes any combination or any combination of the enumerated items. "C to D" means C or more and D or less, unless specifically stated otherwise.

[0038] When syntax such as "at least one of A, B, and C", "at least one of A, B, or C", "at least one selected from the group of A, B, and C", or "at least one selected from A, B, and C" is used to specify a list of elements A, B, and C, the syntax can refer to any suitable combination.

[0039] The term "use" may be considered synonymous with the term "utilize." As used herein, "substantially," "about," and similar terms are used as terms of approximation rather than degree, and are intended to account for the inherent variation of measured or calculated values ​​that a person skilled in the art would recognize.

[0040] In this specification, terms such as first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or sections, but these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, or section from another element, component, region, layer, or section. Accordingly, the first element, component, region, layer, or section discussed below may be named the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0041] Spatial relative terms such as "beneath," "below," "lower," "above," and "upper" may be used herein for ease of explanation to describe the relationship between one element or feature and another element(s) or feature(s) as illustrated in the drawings. Spatially relative positions are to be understood as encompassing different orientations of the device in use or operation, in addition to the orientations depicted in the figures. For example, if the device in the drawing is inverted, an element described as "below" or "below" is understood as "above" or "upper" of another element. Thus, the term "below" may encompass both the up and down directions.

[0042] The terms used in this specification are intended to describe embodiments of the present disclosure and are not intended to limit the present disclosure.

[0043] FIG. 1 is an assembly drawing of a road marker according to an embodiment of the present invention; FIG. 2 is an exploded view of a road marker according to an embodiment of the present invention; FIG. 3 is a perspective view of a light-transmitting case part of a road marker according to an embodiment of the present invention; FIG. 4 is a cross-sectional view AA of FIG. 3, illustrating one embodiment of the light-transmitting case part of a road marker according to an embodiment of the present invention; FIG. 5 is a cross-sectional view AA of FIG. 3, illustrating another embodiment of the light-transmitting case part of a road marker according to an embodiment of the present invention; FIG. 6 is a perspective view of a support case part of a road marker according to an embodiment of the present invention; FIG. 7 is a cross-sectional view of a support case part of a road marker according to an embodiment of the present invention; FIG. 8 is a diagram illustrating one embodiment of a light-emitting part of a road marker according to an embodiment of the present invention; FIG. 9 is a diagram illustrating another embodiment of a light-emitting part of a road marker according to an embodiment of the present invention; FIG. 10 and 11 are a road according to an embodiment of the present invention FIG. 12 is a drawing illustrating an example of operation of another embodiment of the light-emitting part of a road marker, FIG. 13 is a drawing illustrating an example of light emission according to the curvature of the first and second curvature parts of the light-transmitting case part of a road marker according to an embodiment of the present invention, FIG. 14 is a drawing illustrating the illuminance distribution and light intensity distribution of the road marker according to an embodiment of the present invention shown in FIG. 13.

[0044] As shown in FIGS. 1 and 2, a road marker according to one embodiment of the present invention includes a support case part (10), a light-transmitting case part (20), a light-emitting part (30), and a solar cell part (40).

[0045] The support case part (10) is provided with an installation groove part (120) inside. For example, the support case part (10) is inserted into a metal container embedded in the bottom surface of a road to support the bottom surface. The support case part (10) is provided with an installation groove part (120) inside so that a light emitting part (30) and a solar cell part (40) can be installed, and it is preferable that it be positioned parallel to the road to maintain the overall stability of the road marker according to one embodiment of the present invention.

[0046] The light emitting unit (30) is seated on the upper part of the installation groove (120) and is equipped with an LED module (330) to emit light. For example, the light emitting unit (30) receives energy from the solar cell unit (40), and as the LED module (330) emits light, it visually guides the boundaries of the road, lanes, and the direction of the road using lighting.

[0047] The solar cell unit (40) supplies energy to the light emitting unit (30). For example, the solar cell unit (40) is mounted on the upper part of the installation groove (120) and generates electrical energy from sunlight to supply electrical energy to the light emitting unit (30) equipped with an LED module (330). Accordingly, the solar cell unit (40) can self-generate energy using natural light, thereby enabling power supply for the continuous operation of the road marker according to one embodiment of the present invention, allowing it to operate independently without a separate battery or external power supply. Although not shown in the drawing, the solar cell unit (40) may include an energy storage unit that stores electrical energy generated from sunlight.

[0048] The light-transmitting case part (20) is coupled to the support case part (10) to seal the installation groove part (120), and light emitted from the LED module (330) is transmitted to illuminate the road.

[0049] As the light-transmitting case part (20) is coupled to the support case part (10), it seals the installation groove part (120) to protect internal components such as the light-emitting part (30) and solar cell part (40) coupled to the installation groove part (120) from the external environment, and prevents external elements such as dust or water from entering the interior of the coupled support case part (10) and light-transmitting case part (20), thereby maintaining the durability and stability of the road marker according to one embodiment of the present invention.

[0050] The light-transmitting case part (20) parallelizes the light emitted from the LED module (330) to generate parallel light rays, thereby maximizing the amount of light and improving the straightness of the light to increase visibility. The light-transmitting case part (20) may be provided with a transparent material made of a material such as synthetic resin, or a translucent material, so that the light emitted from the LED module is transmitted under the conditions described above.

[0051] Referring to FIGS. 3 to 5, the light-transmitting case part (20) of a road marker according to one embodiment of the present invention is described as follows.

[0052] As shown in FIG. 3, the light-transmitting case part (20) is combined with the support case part (10) and may include a light-transmitting case connecting part (210) and a light-transmitting part (220).

[0053] The light-transmitting case coupling part (210) is coupled to the support case part (10). For example, the light-transmitting case coupling part (210) is formed in the shape of a cylinder or polygonal column that surrounds the outer surface of the support case coupling part (110) of the support case part (10) described later, and is coupled to the support case coupling part (110). The inner surface of the light-transmitting case coupling part (210) may have screw threads formed to allow for a snap-fit ​​coupling with the support case coupling part (110), and a light-transmitting case protrusion (211) may be formed at the lower end of the light-transmitting case coupling part (210) and inserted into the support case insertion part (131) described later, thereby allowing the interior of the coupled support case part (10) and light-transmitting case part (20) to be more firmly sealed.

[0054] The light-emitting part (220) is connected to the upper part of the light-emitting case coupling part (210) so that light passes through. For example, the light-emitting part (220) may include a first light-emitting part (221) and a second light-emitting part (222).

[0055] The first light-emitting part (221) is connected to the upper part of the light-emitting case coupling part (210), and light emitted from the LED module (330) passes through it. For example, the first light-emitting part (221) sets a path for the light emitted from the LED module (330) to pass through, and adjusts the direction of movement of the light according to the set path to stably display lanes and maximize the amount of light to increase visibility. To this end, the first light-emitting part (221) may include a first curvature part (2211) and a second curvature part (2212).

[0056] The first curvature portion (2211) is formed in an inner direction facing the LED module (330), and light irradiated from the LED module (330) is incident thereon. For example, the first curvature portion (2211) receives light within the first light-emitting portion (221) and performs the function of spreading or concentrating the light emitted from the LED module (330). That is, the first curvature portion (2211) is formed as at least one surface among a convex surface, a flat surface, or a concave surface with respect to the light irradiated from the LED module (330), and guides the light irradiated from the LED module (330) in a certain direction within the first light-emitting portion (221). At this time, the curvature of the first curvature portion (2211) adjusts the path of light to move the light in a desired direction and prevents inefficient dispersion, and in relation to the curvature of the second curvature portion (2212) described later, guides the light to an accurate path while ensuring that the maximum amount of light is irradiated through the first light-emitting portion (221). An example of the curvature of the first curvature portion (2211) will be described later with reference to FIGS. 12 to 14.

[0057] The second curvature portion (2212) is formed on the outer side of the first curvature portion (2211) so that light incident on the first curvature portion (2211) is emitted. For example, the second curvature portion (2212) performs the role of spreading or concentrating the light incident from the first curvature portion (2211). The second curvature portion (2212) is formed as a convex surface, and by controlling the direction of the light incident on the first curvature portion (2211), that is, the degree of spreading, according to the curvature, the light is parallelized to generate parallel rays, thereby maximizing the amount of light. An example of the curvature of the second curvature portion (2212) will be described later with reference to FIGS. 12 to 14.

[0058] The first light-emitting part (221) having the first curvature part (2211) and the second curvature part (2212) described above may include a first-1 light-emitting part (221a) and a first-2 light-emitting part (221b) according to the light emission direction.

[0059] The first light-emitting part (221a) is provided in an area connected to the light-emitting case coupling part (210), and is formed in the first direction of the light-emitting part (220) so that light emitted from the first LED module (331) described later passes through and is emitted in the first direction.

[0060] The first-second light-emitting section (221b) is provided in an area connected to the light-emitting case coupling section (210) and is formed in the second direction of the light-emitting section (220) so that light emitted from the second LED module (332), described later, passes through and emits light in the second direction.

[0061] The first-1 light-emitting part (221a) and the first-2 light-emitting part (221b) are equipped with both the first curvature part (2211) and the second curvature part (2212) described above, and the first direction of the first-1 light-emitting part (221a) and the second direction of the first-2 light-emitting part (221b) are opposite directions, so that the road marker according to one embodiment of the present invention can emit light in both directions.

[0062] The second light-emitting part (222) is provided at the center of the first light-emitting part (221) and guides sunlight to be incident in the direction of the solar cell part (40). For example, the second light-emitting part (222) guides sunlight in the direction of the solar cell part (40), thereby enabling the solar cell part (40) to efficiently collect energy, so that the road marker according to one embodiment of the present invention can perform self-generation and emit light.

[0063] Referring to FIG. 4, the surface of the second light-transmitting part (222) of the light-transmitting case part (20) facing the solar cell part (40) may be provided in a flat plate shape. As illustrated in FIG. 4, since the second light-transmitting part (222) is formed in a flat plate shape, the manufacturing of the light-transmitting case part (20) becomes easier, which not only reduces costs but also allows for the uniform distribution of sunlight.

[0064] Referring to FIG. 5, the surface of the second light-emitting part (222) of the light-emitting case part (20) facing the solar cell part (40) may include a convex lens-shaped concentrating lens part (2221) to concentrate sunlight. As shown in FIG. 5, since the second light-emitting part (222) includes the concentrating lens part (2221), sunlight can be concentrated to induce a larger amount of light to the solar cell part (40), and high energy supply can be performed even at low sunlight intensity.

[0065] The second light-emitting part (222) of the light-emitting case part (20) described above may be provided in a flat plate shape as illustrated in FIGS. 4 and 5, or may include a light-concentrating lens part (2221) in the shape of a convex lens, and this may be selectively applied depending on the region, geographical characteristics, or the size of the road marker according to one embodiment of the present invention where the road marker according to one embodiment of the present invention is installed.

[0066] Referring to FIGS. 6 and FIGS. 7, a support case part (10) of a road marker according to one embodiment of the present invention is described as follows.

[0067] As illustrated in FIGS. 6 and 7, the support case portion (10) is coupled with the light-transmitting case portion (20) and may include a support case coupling portion (110), an installation groove portion (120), and a support case seating portion (130).

[0068] An installation groove (120) is provided in the center of the support case coupling part (110), and a light-transmitting case coupling part (210) is coupled to the outer surface. For example, the support case coupling part (110) may be provided in the shape of a cylinder or a polygonal column corresponding to the shape of the light-transmitting case coupling part (210), and screw threads may be formed on the outer surface of the support case coupling part (110) to be fitted and coupled with the light-transmitting case coupling part (210).

[0069] The installation groove (120) securely supports key components such as an LED module (330) and a solar cell (40), and may include a light-emitting substrate coupling part (121) and a solar cell coupling part (122).

[0070] The light-emitting substrate coupling part (121) is coupled to the light-emitting part (30). For example, the light-emitting substrate coupling part (121) allows the light-emitting part (30) to be seated so that the light-emitting part (30) is stably fixed on the support case coupling part (110).

[0071] The solar cell coupling part (122) is coupled to the solar cell part (40). For example, the solar cell coupling part (122) allows the solar cell part (40) to be seated so that the solar cell part (40) is stably fixed on the support case coupling part (110). The solar cell coupling part (122) is formed with a step difference from the light-emitting substrate coupling part (121), and is located above the light-emitting substrate coupling part (121), thereby facilitating the collection of sunlight, while the light-emitting part (30) and the solar cell part (40) are formed in a stacked structure, making the road marker according to one embodiment of the present invention more compact.

[0072] The support case seating portion (130) is connected to the lower part of the support case coupling portion (110) and supports the support case coupling portion (110) by contacting the bottom surface. For example, the support case seating portion (130) allows a road marker according to one embodiment of the present invention to be inserted into a groove formed on a road, etc. and stably supported, and at the same time, the support case insertion portion (131) is provided so that the light-transmitting case protrusion (211) of the light-transmitting case coupling portion (210) is inserted, thereby allowing the interior of the coupled support case portion (10) and light-transmitting case portion (20) to be more firmly sealed.

[0073] Referring to FIGS. 8 to 11, the light emitting part (30) is described as follows.

[0074] FIG. 8 is a drawing illustrating an embodiment of a light emitting unit (30), wherein an embodiment of the light emitting unit (30) may include a light emitting substrate (310), an LED module connector (320), and an LED module (330).

[0075] The light-emitting substrate (310) is coupled to the light-emitting substrate coupling part (121) and connected to the solar cell part (40). For example, the light-emitting substrate (310) is composed of an electrical circuit such as a PCB substrate, receives electrical energy from the solar cell part (40), and can perform the function of lighting the LED module (330) according to the illuminance.

[0076] The LED module connector (320) connects the light-emitting substrate (310) and the LED module (330). For example, the LED module connector (320) is provided as a plate of a certain area and is coupled in a vertical direction or a certain angle direction relative to the light-emitting substrate (310) so that the LED module (330) is positioned above the light-emitting substrate (310), thereby allowing the height of the LED module (330) to be adjusted. Accordingly, the LED module (330) can be positioned close to the first curvature portion (2211) without any angle deformation of the LED module (330). Additionally, the LED module connector (320) may include a first module connector (320a) connecting the first LED module (331) and the light-emitting substrate (310), and a second module connector (320b) connecting the second LED module (332) and the light-emitting substrate (310).

[0077] The LED module (330) is coupled to the LED module connector (320) to provide visual guidance on road boundaries, lanes, road directions, etc. For example, the LED module (330) may be provided in multiple numbers and coupled to the LED module connector (320) to increase the amount of light. Additionally, the LED module (330) may include a first LED module (331) that emits light in a first direction and a second LED module (332) that emits light in a second direction opposite to the first direction.

[0078] FIGS. 9 to 11 illustrate another embodiment of the light emitting unit (30), and may include a light emitting substrate (310), LED module connectors (321a, 321b, 321c), LED modules (330a, 330b, 330c), a height adjustment unit (340), and an angle adjustment unit (350) according to another embodiment of the light emitting unit (30). At this time, the LED module connectors (321a, 321b, 321c) according to another embodiment of the light emitting unit (30) may be provided in a number corresponding to the number of LED modules (330a, 330b, 330c) and may be coupled to each of the LED modules (330a, 330b, 330c). Accordingly, height and angle adjustments can be made individually for multiple LED modules (330a, 330b, 330c).

[0079] The height adjustment unit (340) is linked with the LED module connectors (321a, 321b, 321c) to adjust the height of the LED module connectors (321a, 321b, 321c). As shown in FIG. 10, the height adjustment unit (340) can adjust the height of the LED modules (330a, 330b, 330c) either collectively or individually by adjusting the height of the entire LED module connectors (321a, 321b, 321c) or each of them.

[0080] As the height of the LED modules (330a, 330b, 330c) can be individually adjusted, the light emitted from the LED modules (330a, 330b, 330c) can be adjusted to suit the road environment, thereby expanding the range of light emission angles and distances. In particular, by adjusting the height to match the slope of the road or a specific viewing angle to maximize visibility, it can be used in various installation environments.

[0081] The angle adjustment unit (350) is linked with the LED module connectors (321a, 321b, 321c) to adjust the angle of the LED module connectors (321a, 321b, 321c). As illustrated in FIG. 11, the angle adjustment unit (350) can adjust the angle of the LED modules (330a, 330b, 330c) collectively or individually by adjusting the angle of the entire LED module connectors (321a, 321b, 321c) or each of them.

[0082] As the angles of the LED modules (330a, 330b, 330c) can be individually adjusted, the light emitted from the LED modules (330a, 330b, 330c) can be adjusted to suit the road environment, thereby expanding the range of light emission angles and distances. In particular, by adjusting the angles to match the slope of the road or a specific viewing angle to maximize visibility, it can be used in various installation environments.

[0083] In addition, the description of the configuration of other embodiments of the light emitting unit (30) shown in FIGS. 9 to 11 corresponds to the embodiment of the light emitting unit (30) described with reference to FIG. 8, so a detailed description is omitted.

[0084] When the components of a road marker according to an embodiment of the present invention described with reference to FIGS. 1 to 11 are assembled, they can be arranged as shown in the cross-sectional view of FIG. 12. In order for the road marker according to an embodiment of the present invention to parallelize the light emitted from the LED module (330) to generate parallel light rays and to maximize the amount of light, it is preferable that the components be provided under the following conditions.

[0085] Referring to FIG. 12, it is preferable that the LED module (330) be positioned such that the distance x between the first curvature portion (2211) and the LED module (330) is within the range of 0mm < x < 3mm, and that the LED module (330) or the LED module connector (320) be positioned such that the angle a between the LED module (330) and the bottom surface is within the range of 20° ≤ a ≤ 45°.

[0086] In addition, when the first curvature portion (2211) is r1 (diameter of the first curvature portion (2211)) and the second curvature portion (2212) is r2 (diameter of the second curvature portion (2212)), it is preferable that c1 of the first curvature portion (2211) and c2 of the second curvature portion (2212) be formed within the following ranges, where c1 = 1 / r1 and c2 = 1 / r2.

[0087] If 0.1 ≤ c2, it is desirable to form c1 < -0.1.

[0088] Alternatively, if 0.05 ≤ c2 < 0.1, it is preferable to form -∞ < c1 ≤ -0.1.

[0089] Alternatively, if 0.01 ≤ c2 < 0.5, it is preferable to form 0.02 < c1 < 0.2.

[0090] The range of c1 of the first curvature portion (2211) and c2 of the second curvature portion (2212) described above is such that light emitted from the LED module (330) is parallelized in the first light-emitting portion (221) to generate parallel light rays, and under conditions that maximize the amount of light, a road marker according to one embodiment of the present invention is provided under the conditions described above as in FIG. 13, and thus an illuminance distribution and a light intensity distribution as shown in FIG. 14 can be confirmed.

[0091] The lighting color of the LED module (330) of the road marker according to the present invention is yellow lighting rather than white lighting, and as shown in FIG. 14, it can be confirmed that a stable illuminance distribution (Fig. 14 (a)) and a luminous intensity distribution (Fig. 14 (b)) are achieved.

[0092] To evaluate the performance of the road marker according to the present invention, a photometric test was commissioned to the Korea Construction & Living Environment Testing Institute (KCL), and the road marker according to the present invention produced test results as shown in Table 1 below. The test results in Table 1 are the results obtained when the LED module (330) is equipped with yellow lighting and the road marker of the present invention is tested.

[0093] condition Test items unit test 1 Luminous intensity (Vertical angle: 0.2°, Horizontal angle: 0°) mcd 914 2 Luminous intensity (vertical angle: 0.2°, horizontal angle: +20°) mcd 31 3 Luminous intensity (vertical angle: 0.2°, horizontal angle: -20°) mcd 42 4 Luminous intensity (vertical angle: 0.3°, horizontal angle: +5°) mcd 232 5 Luminous intensity (vertical angle: 0.3°, horizontal angle: -5°) mcd 901 6 Luminous intensity (vertical angle: 1°, horizontal angle: +10°) mcd 57 7 Luminous intensity (vertical angle: 1°, horizontal angle: -10°) mcd 105 8 Luminous intensity (vertical angle: 2°, horizontal angle: +15°) mcd 35 9 Luminous intensity (vertical angle: 2°, horizontal angle: -15°) mcd 42

[0094] As shown in Table 1, when measuring the luminous intensity of the road marker according to the present invention, the road marker according to the present invention in Condition 1 and Condition 5 showed a luminous intensity performance approximately 25 times higher than the minimum luminous intensity standard value of the Ministry of Land, Infrastructure and Transport for road markers. In addition, it can be confirmed that the luminous intensity of the road marker according to the present invention meets or exceeds the minimum luminous intensity standard value in other test conditions as well.

[0095] As a result, by using the road marker according to the present invention, the boundaries, lanes, and directions of the road can be clearly indicated in low-light environments or situations where visibility is limited, thereby enabling the driver to drive safely on the road.

[0096] Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom.

[0097] Therefore, the technical scope of protection of the present invention should be determined by the following patent claims. Explanation of the symbols

[0099] 10: Support case section 110: Support case joint 120: Installation Home 121: Light-emitting substrate bonding part 122: Solar cell connection part 130: Support case seating part 131: Support case insert 20: Light-transmitting case section 210: Light-transmitting case joint 211: Light-transmitting case protrusion 220: Light-emitting unit 221: 1st Light Transmitting Unit 221a: Section 1-1 Light Transmitter 221b: 1st-2nd light emitter 2211: First curvature section 2212: Second curvature section 222: 2nd Light Transmitting Unit 2221: Concentrating lens part 223: Light-transmitting connection 30: Light emitting part 310: Light-emitting substrate 320, 321a, 321b, 321c: LED module connector 320a: First module connector 320b: Second module connector 330, 330a, 330b, 330c: LED module 331: 1st LED Module 332: 2nd LED Module 340: Height adjustment unit 350: Angle adjustment part 40: Solar cell section

Claims

Claim 1 A road marker characterized by comprising: a support case portion having an internal installation groove; a light-emitting portion seated on the upper part of the installation groove and equipped with an LED module to emit light; a solar cell portion supplying energy to the light-emitting portion; and a light-transmitting case portion coupled to the support case portion to seal the installation groove and through which light emitted from the LED module is transmitted. Claim 2 A road marker according to claim 1, characterized in that the light-transmitting case part comprises: a light-transmitting case coupling part coupled to the support case part; and a light-transmitting part connected to the upper part of the light-transmitting case coupling part through which light passes. Claim 3 A road marker according to claim 2, characterized in that the light-emitting part comprises: a first light-emitting part connected to the light-emitting case coupling part and through which light passes; and a second light-emitting part provided at the center of the first light-emitting part and guiding sunlight to be incident in the direction of the solar cell part. Claim 4 A road marker according to claim 3, characterized in that the first light-emitting part comprises: a first curved part formed in an inner direction facing the LED module and into which the light is incident; and a second curved part formed in an outer direction of the first curved part and into which the light incident on the first curved part is emitted. Claim 5 A road marker according to claim 4, characterized in that the distance x between the first curved portion and the LED module is in the range of 0mm < x < 3mm. Claim 6 A road marker according to claim 4, characterized in that the angle a between the LED module and the bottom surface is in the range of 20° ≤ a ≤ 45°. Claim 7 A road marker characterized in that, in paragraph 3, the second light-emitting part is provided in a flat plate shape. Claim 8 A road marker according to paragraph 3, characterized in that the second light-emitting part includes a light-concentrating lens part that concentrates sunlight. Claim 9 A road marker according to claim 3, characterized in that the light emitting part comprises: a light emitting substrate coupled to the upper part of the support case part and connected to the solar cell part; and an LED module connector connecting the light emitting substrate and the LED module. Claim 10 A road marker according to claim 9, characterized in that the LED module comprises: a first LED module emitting light in a first direction; and a second LED module emitting light in a second direction opposite to the first direction. Claim 11 A road marker according to claim 10, characterized in that the LED module connector comprises: a first module connector connecting the first LED module and the light-emitting substrate; and a second module connector connecting the second LED module and the light-emitting substrate. Claim 12 A road marker according to claim 10, characterized in that the first light-emitting part comprises: a first-1 light-emitting part provided in an area connected to the light-emitting case coupling part, through which light emitted from the first LED module passes and moves; and a first-2 light-emitting part provided in an area connected to the light-emitting case coupling part, through which light emitted from the second LED module passes and moves. Claim 13 A road marker according to paragraph 2, characterized in that the support case part comprises: a support case coupling part having the installation groove part provided in the center and the light-transmitting case coupling part coupled to the outer surface; and a support case seating part connected to the lower part of the support case coupling part and supporting the support case coupling part by contacting the bottom surface. Claim 14 A road marker according to claim 13, characterized in that the above-mentioned installation groove comprises: a light-emitting substrate coupling part to which the light-emitting part is coupled; and a solar cell coupling part to which the solar cell part is coupled. Claim 15 A road marker in Clause 13, characterized in that the support case seating portion is provided with a support case insertion portion into which the end of the light-transmitting case coupling portion is inserted. Claim 16 A road marker according to any one of claims 1 to 15, wherein the light-emitting case part parallelizes the light emitted from the LED module to generate parallel rays.

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