Road sign tack attached with solar cell

Abstract

To provide a road sign tack attached with a solar cell which can collect light emitted from positions different from each other and can control directions of light of colors different from each other even when a multicolor LED is used and light source positions where light of colors different from each other is emitted are different from each other.SOLUTION: A road sign tack includes: a lower case 10 having an installation space formed therein; a circuit board 20 arranged in the installation space; an LED module 30 attached to one side and the other side of the circuit board; a solar cell 40 arranged on the circuit board; an outer lens 50 made of a transparent material, disposed above the lower case and the solar cell, and having a light transmission portion 51 through which light emitted from the LED module transmits on the periphery of an upper surface thereof; an inner lens 60 disposed in front of the LED module, fixed and attached to the circuit board, arranged below the outer lens, and collecting the emission light from the LED module; and an upper rim member 70 for fixing and joining the outer lens to the lower case.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a road sign stud equipped with a solar cell, and more particularly to a road sign stud equipped with a solar cell that is installed on a road and can be clearly seen by pedestrians and drivers at night or in rainy weather. [Background technology]

[0002] A road sign is an accessory to a road, as defined in Article 3 of the Road Act and Article 30 of the Regulations on Road Structure / Facility Standards. It complements the linear shape of painted road markings, which have serious reduced visibility at night or during rainy weather, clearly guides the driver's gaze, and is a visual guidance facility intended to ensure road safety and smooth communication.

[0003] These road sign studs are installed in sections that complement the functions of road markings such as centerlines, lane boundaries, reserved lanes, road hazards and safety zones, and that need to increase drivers' awareness of linear guidance and changes in the road environment.

[0004] Typical installation areas include roadside lines, curved roads, tunnels, sections where lanes decrease / separate / merge, sections where traffic lanes change, traffic islands, interchanges, two-lane roads with left-turn lanes, multi-lane roads, and bridges with narrow road widths.

[0005] In addition, road sign studs are classified according to their drive system into reflective types that reflect light entering from the outside like a car's headlights, and luminous types that have their own light-emitting function, and the luminous types are further subdivided into light-up types, convertible types, etc.

[0006] Reflective road sign studs do not have a self-illuminating function, but instead perform the function by reflecting the headlights of automobiles.

[0007] Therefore, while they are relatively inexpensive and easy to install, in order to realize a reflective surface at a specified angle, they must be installed so that they protrude a certain amount from the road surface, which reduces the stability and drivability of the road and causes problems such as a shortened lifespan due to wear of the reflective surface, so the use of luminous road sign studs is tending to increase.

[0008] However, conventional illuminating road sign studs use multi-color LEDs that emit different colors of light from different light source positions for each color, and there is a problem in that it is difficult to control the direction of the different colors of light because the light emitted from different positions cannot be concentrated. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Korean Patent Publication No. 10-2022-0121164 [Patent Document 2] Korean Patent No. 10-2354817 Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention is made to solve the above-mentioned problems, and has an object to provide a road sign stud equipped with a solar cell that can collect light emitted from different positions by using a multi-color LED, even when the light source positions from which the different colors of light are emitted are different, and control the direction of the different colors of light. [Means for solving the problem]

[0011] In order to achieve the above object, the road sign stud equipped with the solar cell of the present invention comprises: a lower case having an installation space formed therein; A circuit board disposed in the installation space; an LED module mounted on one side and the other side of the circuit board; a solar cell disposed on top of the circuit board; With transparent material; an outer lens disposed on the lower case and the solar cell, the outer lens having a light transmitting portion formed around the upper periphery thereof through which light emitted from the LED module passes; Located in front of the LED module, an inner lens fixedly mounted on the circuit board and disposed under the outer lens to condense light emitted from the LED module; an upper rim member that fixedly couples the outer lens to the lower case; wherein sunlight passes through the outer lens and is then irradiated onto the solar cell, the solar cell being connected to the LED module and supplying power, and the light emitted from the LED module is irradiated so as to be concentrated on the inner surface of the light-transmitting portion while passing through the inner lens, and is then refracted while passing through the light-transmitting portion and dispersed in the horizontal direction to the outside.

[0012] The LED module is made of multi-color SMD (surface mounted device) type LEDs, and the LED module is mounted vertically on the circuit board with multiple LED chips arranged horizontally.

[0013] The LED module comprises: a vertical board disposed perpendicular to the circuit board; a number of LED chips mounted on said vertical substrate; The LED chips are arranged horizontally on the vertical substrate with different colors, and the inner lens arranged in front of the LED chips refracts light emitted from the horizontally arranged LED chips with different colors, irradiates the light in parallel horizontal directions, and then focuses the light on the inner surface of the light transmitting portion.

[0014] The LED chips are made up of a first chip, a second chip, and a third chip that are arranged in a horizontal direction, the inner lens is made up of an aspheric lens, the inner lens is disposed in front of the second chip, and has an inclined upper surface and a lower surface, A first bent portion having an aspheric shape with a center line formed long in the horizontal direction; a second bent portion having an aspheric shape, the second bent portion being disposed in front of the first chip, being integrally formed with one of the first bent portions, one end of a center line being connected to the center line of the first bent portion, and the other end being curved toward the LED chip; a third bent portion having an aspheric shape, the third bent portion being disposed in front of the third chip, being integrally formed with the other of the first bent portion, one end of a center line being connected to the center line of the first bent portion, and the other end being curved toward the LED chip to form a curved shape; The light emitted from the second chip is irradiated as a parallel straight line while passing through the first bent portion, the light emitted from the first chip is refracted while passing through the second bent portion and irradiated as a parallel straight line with the light emitted from the second chip, and the light emitted from the third chip is refracted while passing through the third bent portion and irradiated as a parallel straight line with the light emitted from the second chip.

[0015] A number of light-receiving protrusions are formed at the center of the lower surface of the outer lens where the solar cell is disposed, and the inclination angle between the light-receiving protrusions is 150 degrees.

[0016] A number of first diffusion protrusions are formed long in the direction of the light-transmitting portion on the underside of the outer lens arranged on the upper part of the LED module, and the first diffusion protrusions are arranged parallel to the horizontal direction in which the LED chips are arranged, and light emitted from the LED chips and irradiated upward is diffused laterally by the first diffusion protrusions, preventing the light from being directly emitted upward on the outer lens.

[0017] A long second diffusion protrusion is formed around the underside of the outer lens in a direction perpendicular to the light-transmitting portion, and an auxiliary LED is mounted on the circuit board and positioned below the second diffusion protrusion. The auxiliary LED emits light upward, and the width of the second diffusion protrusion is formed larger than the width of the first diffusion protrusion. The light emitted upward from the auxiliary LED is diffused laterally by the second diffusion protrusion. Effect of the Invention

[0018] The road sign stud equipped with the solar cell of the present invention as described above has the following effects.

[0019] In the present invention, even if the LED module is made of multi-color SMD (surface mounted device) type LEDs and multiple LED chips arranged horizontally emit different color lights in the horizontal direction, the light can be concentrated on the inner surface of the outer lens through the inner lens and then dissipated horizontally to the outside through the outer lens, thereby controlling the direction of the different color lights. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a perspective view of a road sign stud according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an exploded perspective view of a road sign stud according to an embodiment of the present invention. [Diagram 3] FIG. 3 is an exploded perspective view of an LED module and an inner lens of a road sign stud according to an embodiment of the present invention. [Figure 4] FIG. 4 is another exploded perspective view of the road sign stud according to the embodiment of the present invention. [Diagram 5] FIG. 5 is a bottom perspective view of an outer lens of a road sign stud according to an embodiment of the present invention. [Figure 6] FIG. 6 is a cross-sectional view taken along line AA in FIG. [Figure 7] FIG. 7 is a cross-sectional view taken along line BB in FIG. [Figure 8] FIG. 8 is a cross-sectional view illustrating light being irradiated onto a solar cell of a road sign stud according to an embodiment of the present invention. [Figure 9] FIG. 9 is a plan sectional view of the LED module and the inner lens of the road sign stud according to an embodiment of the present invention. [Figure 10] FIG. 10 illustrates the path of light emanating from a road sign stud through an inner lens and an outer lens according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] As shown in Figures 1 to 7, the road sign stud equipped with a solar cell of the present invention comprises a lower case (10), a circuit board (20), an LED module (30), a solar cell (40), an outer lens (50), an inner lens (60), and an upper rim member (70).

[0022] The lower case (10) has an installation space formed therein and an open top.

[0023] The circuit board (20) is disposed in the installation space.

[0024] The LED modules (30) are mounted on the circuit board (20) so as to face one direction and the other direction, i.e., the direction of travel of the vehicle.

[0025] The solar cell (40) is disposed on top of the circuit board (20).

[0026] After passing through the outer lens (50), sunlight is irradiated onto the solar cell (40), and the solar cell (40) is connected to the LED module (30) to supply power.

[0027] The outer lens (50) is made of a transparent material and is disposed on the lower case (10) and the solar cell (40).

[0028] The outer lens (50) has a light transmitting portion (51) formed around the upper surface thereof, through which the light emitted from the LED module (30) passes.

[0029] The light transmitting portion 51 has an outer surface that is inclined downward so that the transmitted light is dispersed in the horizontal direction.

[0030] 5 and 8, a number of light-receiving protrusions 55 are formed at the center of the lower surface of the outer lens 50 on which the solar cell 40 is disposed.

[0031] As shown in FIG. 8, the inclination angle between the light receiving protrusions 55 is 150 degrees.

[0032] By setting the inclination angle between the light-receiving protrusions (55) to 150 degrees as described above, the critical angle at which back reflection occurs when sunlight is irradiated onto the outer lens (50) can be lowered, thereby allowing sunlight to pass through the outer lens (50) even at low angles, and increasing the transmission time.

[0033] The inner lens (60) is disposed in front of the LED module (30) and fixedly attached to the circuit board (20).

[0034] The inner lens (60) is disposed below the outer lens (50) and collects the light emitted from the LED module (30).

[0035] The inner lens (60) is an aspheric lens.

[0036] The upper rim member (70) fixedly connects the outer lens (50) to the lower case (10).

[0037] The upper rim member (70) is ring-shaped to allow sunlight to pass through the outer lens (50) to the solar cell (40).

[0038] As shown in FIG. 6, the light emitted from the LED module (30) passes through the inner lens (60) and is irradiated so as to be concentrated on the inner surface of the light transmitting portion (51).

[0039] The light focused and irradiated onto the inner surface of the light transmitting portion (51) by the inner lens (60) is refracted while passing through the light transmitting portion (51) and is dispersed in the horizontal direction to the outside.

[0040] In this embodiment, the LED module (30) is made of a multi-color SMD (surface mount device) type LED, as shown in FIG.

[0041] The LED module (30) is mounted vertically on the circuit board (20) and is arranged so that the LED chip (32) faces horizontally.

[0042] The LED module (30) comprises a vertical substrate (31) arranged perpendicular to the circuit board (20), and a number of LED chips (32) mounted on the vertical substrate (31).

[0043] The LED chips (32) are arranged in a horizontal direction on the vertical substrate (31) with the chips having different colors.

[0044] For example, the LED chips (32) are configured such that a first chip (33), a second chip (34), and a third chip (35) of different colors are arranged at different positions in the horizontal direction.

[0045] The inner lens (60) arranged in front of the LED chip (32) refracts the light emitted from the horizontally arranged LED chips (32) of different colors, irradiates the light in parallel horizontal directions, and then focuses the light on the inner surface of the light-transmitting portion (51).

[0046] For this reason, the inner lens (60) includes a first bent portion (61), a second bent portion (62), and a third bent portion (63).

[0047] The first bent portion (61) is disposed in front of the second tip (34), and is configured to have an aspheric shape with inclined upper and lower surfaces and a center line that is long in the horizontal direction.

[0048] The second bent portion (62) is disposed in front of the first tip (33) and is integrally formed with one side of the first bent portion (61).

[0049] The second bent portion (62) has an aspheric shape in which one end of the center line is connected to the center line of the first bent portion (61) and the other end is curved toward the LED chip (32).

[0050] The third bent portion (63) is disposed in front of the third tip (35) and is integrally formed with the other of the first bent portion (61).

[0051] The third bent portion (63) has an aspheric shape in which one end of the center line is connected to the center line of the first bent portion (61) and the other end is curved toward the LED chip (32).

[0052] As shown in FIGS. 3 and 9, the second bent portion (62) and the third bent portion (63) are curved in opposite directions from each other about the first bent portion (61).

[0053] The light emitted from the second chip (34) arranged at the center is irradiated as a parallel straight line while passing through the first bend portion (61), the light emitted from the first chip (33) is refracted while passing through the second bend portion (62) and is irradiated as a parallel straight line to the light emitted from the second chip (34), and the light emitted from the third chip (35) is refracted while passing through the third bend portion (63) and is irradiated as a parallel straight line to the light emitted from the second chip (34).

[0054] Figure 10 illustrates the path of light that diverges through the light-transmitting portion (51) of the outer lens (50) after being concentrated in the inner lens (60) when light of different colors is emitted from different positions of the LED module (30).

[0055] When the LED module (30) is composed of a multi-color SMD type LED, if a general spherical lens is used for the inner lens (60), the light of different colors emitted from the first chip (33) and the third chip (35) arranged on either side of the second chip (34) will be diffused to the side while passing through the spherical lens, making it difficult to control the light.

[0056] However, in the present invention, when the LED module (30) is made of a multi-color SMD type LED, the inner lens (60) is made of an aspherical lens having the first bend (61), the second bend (62), and the third bend (63), so that the light of different colors emitted from the first chip (33) and the third chip (35) arranged on either side of the second chip (34) is controlled as it passes through the inner lens (60), which is an aspherical lens, and is irradiated as straight lines parallel to each other.

[0057] Therefore, even if light of different colors is emitted from a multi-color SMD type LED, i.e., multiple LED chips (32) arranged horizontally, the light is controlled to be parallel to each other as it passes through the inner lens (60), and can be focused on the inner surface of the outer lens (50).

[0058] The first chip (33), the second chip (34) and the third chip (35) can all be made to emit light simultaneously, or can be made to emit light selectively one by one.

[0059] In addition, as shown in Figures 5 and 6, a number of first diffusion protrusions (52) are formed on the underside of the outer lens (50) disposed on the upper part of the LED module (30) so as to extend in the direction of the light transmission portion (51).

[0060] The first diffusion protrusions 52 are arranged in parallel to the horizontal direction in which the LED chips 32 are arranged.

[0061] Of the light emitted from the LED chip (32), the light that is irradiated upward can be diffused laterally by the first diffusion protrusion (52) to prevent the light from being directly irradiated upward on the outer lens (50).

[0062] As shown in FIGS. 5 and 7, a second diffusion protrusion (52) is formed on the periphery of the lower surface of the outer lens (50) in a direction perpendicular to the light transmitting portion (51).

[0063] As shown in Figs. 2 and 7, an auxiliary LED 25 is mounted on the circuit board 20 and disposed below the second diffusion protrusion 53. As shown in Figs.

[0064] The auxiliary LED (25) emits light upward.

[0065] The second diffusion protrusion (53) has a width greater than that of the first diffusion protrusion (52).

[0066] As a result, the main function of the first diffusion protrusion (52) is to direct light directly upward, and the main function of the second diffusion protrusion (53) is to diffuse light more effectively to the side.

[0067] The light emitted upward from the auxiliary LED (25) is diffused laterally by the second diffusion protrusion (53), softly illuminating the entire outer lens (50).

[0068] As described above, even if the LED module (30) is made of multi-color SMD (surface mounted device) type LEDs and emits light of different colors horizontally from a number of horizontally arranged LED chips (32), the light can be concentrated on the inner surface of the outer lens (50) through the inner lens (60) and then dissipated horizontally to the outside through the outer lens (50).

[0069] The road sign stud having the solar cell of the present invention is not limited to the above-mentioned embodiment, and may be modified in various ways within the scope of the technical concept of the present invention. [Explanation of symbols]

[0070] 10 Lower Case 20 Circuit Board 25 Auxiliary LED 30 LED Modules 31 Vertical Board 32 LED chips 33 First Chip 34 Second Chip 35 3rd Chip 40 Solar Cells 50 Outer Lens 51 Light transmission part 52 First diffusion protrusion 53 Second diffusion protrusion 55 Light receiving projection 60 Inner Lens 61 1st bending part 62 2nd bending part 63 3rd bending part 70 Upper rim member

Claims

[Claim 1] A lower case having an installation space formed therein; A circuit board disposed in the installation space; an LED module mounted on one side and the other side of the circuit board and consisting of multi-color SMD (surface mounted device) type LEDs; a solar cell disposed on top of the circuit board; an outer lens made of a transparent material, disposed on the lower case and the solar cell, the outer lens having a light transmitting portion formed around the periphery of the upper surface through which the light emitted from the LED module passes; an inner lens disposed on a front surface of the LED module, fixed to the circuit board, and disposed below the outer lens to condense light emitted from the LED module; an upper rim member that fixedly couples the outer lens to the lower case; Equipped with The sunlight passes through the outer lens and is then irradiated onto the solar cell, which is connected to the LED module to supply power; The light emitted from the LED module is irradiated so as to be concentrated on the inner surface of the light transmitting portion while passing through the inner lens, and then refracted while passing through the light transmitting portion and dispersed in the horizontal direction to the outside, The LED module includes: a vertical board disposed perpendicular to the circuit board; A number of LED chips mounted on the vertical substrate, the chips having different colors being arranged horizontally on the vertical substrate; Equipped with The inner lens disposed in front of the LED chip refracts light emitted from the horizontally arranged LED chips of different colors, irradiates the light in parallel horizontal directions, and then focuses the light on the inner surface of the light transmitting portion. A plurality of first diffusion protrusions are formed on a lower surface of the outer lens disposed on the upper portion of the LED module, the first diffusion protrusions being elongated toward the light transmitting portion, and the first diffusion protrusions are arranged in parallel to a horizontal direction in which the LED chips are disposed, The light emitted from the LED chip and irradiated in an upward direction is diffused laterally by the first diffusion protrusion, thereby preventing the light from being directly irradiated in an upward direction of the outer lens, A second diffusion protrusion is formed around the lower surface of the outer lens in a direction perpendicular to the light transmitting portion, and an auxiliary LED is mounted on the circuit board and disposed below the second diffusion protrusion to emit light in an upward direction. The width of the second diffusion protrusion is greater than the width of the first diffusion protrusion, A road sign stud equipped with a solar cell, wherein light emitted upward from the auxiliary LED is diffused laterally by the second diffusion protrusion.

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